release v1.3.9

feat: add WriteBytesToFile and WriteStringToFile
feat: add ContainsAll and ContainsAny
2026-02-05 05:12:26 +08:00 · 2023-06-01 10:06:48 +08:00 · 2023-05-31 17:36:12 +08:00 · 2023-05-31 17:27:25 +08:00 · 2023-05-31 17:23:47 +08:00 · 2023-05-31 10:12:17 +08:00
124 changed files with 16712 additions and 10692 deletions
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -17,7 +17,7 @@ jobs:
          fetch-depth: 2
      - uses: actions/setup-go@v2
        with:
-          go-version: "1.18"
+          go-version: "1.16"
      - name: Run coverage
        run: go test -v ./... -coverprofile=coverage.txt -covermode=atomic
      - name: Upload coverage to Codecov
--- a/.gitignore
+++ b/.gitignore
@@ -6,4 +6,5 @@ fileutil/*.txt
 fileutil/*.zip
 fileutil/*.link
 fileutil/unzip/*
+slice/testdata/*
 cryptor/*.pem
--- a/README.md
+++ b/README.md
@@ -3,13 +3,13 @@

 <br/>

-![Go version](https://img.shields.io/badge/go-%3E%3D1.16<recommend>-9cf)
-[![Release](https://img.shields.io/badge/release-2.0.1-green.svg)](https://github.com/duke-git/lancet/releases)
-[![GoDoc](https://godoc.org/github.com/duke-git/lancet/v2?status.svg)](https://pkg.go.dev/github.com/duke-git/lancet/v2)
-[![Go Report Card](https://goreportcard.com/badge/github.com/duke-git/lancet/v2)](https://goreportcard.com/report/github.com/duke-git/lancet/v2)
+![Go version](https://img.shields.io/badge/go-v1.16-9cf)
+[![Release](https://img.shields.io/badge/release-1.3.9-green.svg)](https://github.com/duke-git/lancet/releases)
+[![GoDoc](https://godoc.org/github.com//duke-git/lancet?status.svg)](https://pkg.go.dev/github.com/duke-git/lancet)
+[![Go Report Card](https://goreportcard.com/badge/github.com/duke-git/lancet)](https://goreportcard.com/report/github.com/duke-git/lancet)
 [![test](https://github.com/duke-git/lancet/actions/workflows/codecov.yml/badge.svg?branch=main&event=push)](https://github.com/duke-git/lancet/actions/workflows/codecov.yml)
 [![codecov](https://codecov.io/gh/duke-git/lancet/branch/main/graph/badge.svg?token=FC48T1F078)](https://codecov.io/gh/duke-git/lancet)
-[![License](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/duke-git/lancet/blob/main/LICENSE)
+[![License](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/duke-git/lancet/blob/v1/LICENSE)

 </div>

@@ -23,22 +23,15 @@ English | [简体中文](./README_zh-CN.md)

 ## Feature

- 👏 Comprehensive, efficient and reusable.
- 💪 250+ go util functions, support string, slice, datetime, net, crypt...
- 💅 Only depend on the go standard library.
- 🌍 Unit test for every exported function.
+-   👏 Comprehensive, efficient and reusable.
+-   💪 400+ go util functions, support string, slice, datetime, net, crypt...
+-   💅 Only depend on the go standard library.
+-   🌍 Unit test for every exported function.

 ## Installation
-### Note:

-1. <b>For users who use go1.18 and above, it is recommended to install lancet v2.x.x. Cause v2.x.x rewrite all functions with generics of go1.18.</b>
 ```go
-go get github.com/duke-git/lancet/v2 // will install latest version of v2.x.x
-```
-
-2. <b>For users who use version below go1.18, you should install v1.x.x. now latest v1 is v1.2.6. </b>
-```go
-go get github.com/duke-git/lancet@v1.2.6 // below go1.18, install latest version of v1.x.x
+go get github.com/duke-git/lancet
 ```

 ## Usage
@@ -46,378 +39,454 @@ go get github.com/duke-git/lancet@v1.2.6 // below go1.18, install latest version
 Lancet organizes the code into package structure, and you need to import the corresponding package name when use it. For example, if you use string-related functions,import the strutil package like below:

 ```go
-import "github.com/duke-git/lancet/v2/strutil"
+import "github.com/duke-git/lancet/strutil"
 ```

 ## Example

-Here takes the string function ReverseStr (reverse order string) as an example, and the strutil package needs to be imported.
+Here takes the string function Reverse (reverse order string) as an example, and the strutil package needs to be imported.

 ```go
 package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/strutil"
+    "github.com/duke-git/lancet/strutil"
 )

 func main() {
    s := "hello"
-    rs := strutil.ReverseStr(s)
+    rs := strutil.Reverse(s)
    fmt.Println(rs) //olleh
 }
 ```

 ## API Documentation

-### Algorithm package implements some basic algorithm. eg. sort, search.
+### 1. Compare package provides a lightweight comparison function on any type.

 ```go
-import "github.com/duke-git/lancet/v2/algorithm"
-```
-#### Function list:
- [BubbleSort](https://github.com/duke-git/lancet/blob/main/docs/algorithm.md#BubbleSort)
- [CountSort](https://github.com/duke-git/lancet/blob/main/docs/algorithm.md#CountSort)
- [HeapSort](https://github.com/duke-git/lancet/blob/main/docs/algorithm.md#HeapSort)
- [InsertionSort](https://github.com/duke-git/lancet/blob/main/docs/algorithm.md#InsertionSort)
- [MergeSort](https://github.com/duke-git/lancet/blob/main/docs/algorithm.md#MergeSort)
- [QuickSort](https://github.com/duke-git/lancet/blob/main/docs/algorithm.md#QuickSort)
- [SelectionSort](https://github.com/duke-git/lancet/blob/main/docs/algorithm.md#SelectionSort)
- [ShellSort](https://github.com/duke-git/lancet/blob/main/docs/algorithm.md#ShellSort)
- [BinarySearch](https://github.com/duke-git/lancet/blob/main/docs/algorithm.md#BinarySearch)
- [BinaryIterativeSearch](https://github.com/duke-git/lancet/blob/main/docs/algorithm.md#BinaryIterativeSearch)
- [LinearSearch](https://github.com/duke-git/lancet/blob/main/docs/algorithm.md#LinearSearch)
- [LRUCache](https://github.com/duke-git/lancet/blob/main/docs/algorithm.md#LRUCache)
-
-
-### Convertor package contains some functions for data convertion.
-
-```go
-import "github.com/duke-git/lancet/v2/convertor"
-```
-#### Function list:
- [ColorHexToRGB](https://github.com/duke-git/lancet/blob/main/docs/convertor.md#ColorHexToRGB)
- [ColorRGBToHex](https://github.com/duke-git/lancet/blob/main/docs/convertor.md#ColorRGBToHex)
- [ToBool](https://github.com/duke-git/lancet/blob/main/docs/convertor.md#ToBool)
- [ToBytes](https://github.com/duke-git/lancet/blob/main/docs/convertor.md#ToBytes)
- [ToChar](https://github.com/duke-git/lancet/blob/main/docs/convertor.md#ToChar)
- [ToInt](https://github.com/duke-git/lancet/blob/main/docs/convertor.md#ToInt)
- [ToJson](https://github.com/duke-git/lancet/blob/main/docs/convertor.md#ToJson)
- [ToString](https://github.com/duke-git/lancet/blob/main/docs/convertor.md#ToString)
- [StructToMap](https://github.com/duke-git/lancet/blob/main/docs/convertor.md#StructToMap)
-  
-### Cryptor package is for data encryption and decryption.
-
-```go
-import "github.com/duke-git/lancet/v2/cryptor"
+import "github.com/duke-git/lancet/compare"
 ```

 #### Function list:
- [AesEcbEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#AesEcbEncrypt)
- [AesEcbDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#AesEcbDecrypt)
- [AesCbcEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#AesCbcEncrypt)
- [AesCbcDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#AesCbcDecrypt)
- [AesCtrCrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#AesCtrCrypt)
- [AesCfbEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#AesCfbEncrypt)
- [AesCfbDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#AesCfbDecrypt)
- [AesOfbEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#AesOfbEncrypt)
- [AesOfbDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#AesOfbDecrypt)
- [Base64StdEncode](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#Base64StdEncode)
- [Base64StdDecode](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#Base64StdDecode)
- [DesEcbEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#DesEcbEncrypt)
- [DesEcbDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#DesEcbDecrypt)
- [DesCbcEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#DesCbcEncrypt)
- [DesCbcDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#DesCbcDecrypt)
- [DesCtrCrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#DesCtrCrypt)
- [DesCfbEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#DesCfbEncrypt)
- [DesCfbDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#DesCfbDecrypt)
- [DesOfbEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#DesOfbEncrypt)
- [DesOfbDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#DesOfbDecrypt)
- [HmacMd5](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#HmacMd5)
- [HmacSha1](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#HmacSha1)
- [HmacSha256](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#HmacSha256)
- [HmacSha512](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#HmacSha512)
- [Md5String](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#Md5String)
- [Md5File](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#Md5File)
- [Sha1](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#Sha1)
- [Sha256](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#Sha256)
- [Sha512](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#Sha512)
- [GenerateRsaKey](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#GenerateRsaKey)
- [RsaEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#RsaEncrypt)
- [RsaDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor.md#RsaDecrypt)

-### Datetime package supports date and time format and compare.
+-   [Equal](https://github.com/duke-git/lancet/blob/v1/docs/compare.md#Equal)
+-   [EqualValue](https://github.com/duke-git/lancet/blob/v1/docs/compare.md#EqualValue)
+-   [LessThan](https://github.com/duke-git/lancet/blob/v1/docs/compare.md#LessThan)
+-   [GreaterThan](https://github.com/duke-git/lancet/blob/v1/docs/compare.md#GreaterThan)
+-   [LessOrEqual](https://github.com/duke-git/lancet/blob/v1/docs/compare.md#LessOrEqual)
+-   [GreaterOrEqual](https://github.com/duke-git/lancet/blob/v1/docs/compare.md#GreaterOrEqual)

+### 2. Convertor package contains some functions for data convertion.

 ```go
-import "github.com/duke-git/lancet/v2/datetime"
+import "github.com/duke-git/lancet/convertor"
 ```
-#### Function list:
- [AddDay](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#AddDay)
- [AddHour](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#AddHour)
- [AddMinute](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#AddMinute)
- [BeginOfMinute](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#BeginOfMinute)
- [BeginOfHour](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#BeginOfHour)
- [BeginOfDay](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#BeginOfDay)
- [BeginOfWeek](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#BeginOfWeek)
- [BeginOfMonth](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#BeginOfMonth)
- [BeginOfYear](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#BeginOfYear)
- [EndOfMinute](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#EndOfMinute)
- [EndOfHour](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#EndOfHour)
- [EndOfDay](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#EndOfDay)
- [EndOfWeek](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#EndOfWeek)
- [EndOfMonth](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#EndOfMonth)
- [EndOfYear](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#EndOfYear)
- [GetNowDate](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#GetNowDate)
- [GetNowTime](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#GetNowTime)
- [GetNowDateTime](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#GetNowDateTime)
- [GetZeroHourTimestamp](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#GetZeroHourTimestamp)
- [GetNightTimestamp](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#GetNightTimestamp)
- [FormatTimeToStr](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#FormatTimeToStr)
- [FormatStrToTime](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#FormatStrToTime)
- [NewUnix](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#NewUnix)
- [NewUnixNow](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#NewUnixNow)
- [NewFormat](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#NewFormat)
- [NewISO8601](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#NewISO8601)
- [ToUnix](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#ToUnix)
- [ToFormat](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#ToFormat)
- [ToFormatForTpl](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#ToFormatForTpl)
- [ToIso8601](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#ToIso8601)

-### Fileutil package implements some basic functions for file operations.
+#### Function list:
+
+-   [ColorHexToRGB](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ColorHexToRGB)
+-   [ColorRGBToHex](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ColorRGBToHex)
+-   [ToBool](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ToBool)
+-   [ToBytes](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ToBytes)
+-   [ToChar](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ToChar)
+-   [ToChannel](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ToChannel)
+-   [ToInt](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ToInt)
+-   [ToJson](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ToJson)
+-   [ToString](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ToString)
+-   [StructToMap](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#StructToMap)
+-   [EncodeByte](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#EncodeByte)
+-   [DecodeByte](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#DecodeByte)
+-   [DeepClone](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#DeepClone)
+-   [CopyProperties](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#CopyProperties)
+
+### 3. Cryptor package is for data encryption and decryption.

 ```go
-import "github.com/duke-git/lancet/v2/fileutil"
+import "github.com/duke-git/lancet/cryptor"
+```
+
+#### Function list:
+
+-   [AesEcbEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#AesEcbEncrypt)
+-   [AesEcbDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#AesEcbDecrypt)
+-   [AesCbcEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#AesCbcEncrypt)
+-   [AesCbcDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#AesCbcDecrypt)
+-   [AesCtrCrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#AesCtrCrypt)
+-   [AesCfbEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#AesCfbEncrypt)
+-   [AesCfbDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#AesCfbDecrypt)
+-   [AesOfbEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#AesOfbEncrypt)
+-   [AesOfbDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#AesOfbDecrypt)
+-   [Base64StdEncode](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Base64StdEncode)
+-   [Base64StdDecode](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Base64StdDecode)
+-   [DesEcbEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#DesEcbEncrypt)
+-   [DesEcbDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#DesEcbDecrypt)
+-   [DesCbcEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#DesCbcEncrypt)
+-   [DesCbcDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#DesCbcDecrypt)
+-   [DesCtrCrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#DesCtrCrypt)
+-   [DesCfbEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#DesCfbEncrypt)
+-   [DesCfbDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#DesCfbDecrypt)
+-   [DesOfbEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#DesOfbEncrypt)
+-   [DesOfbDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#DesOfbDecrypt)
+-   [HmacMd5](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#HmacMd5)
+-   [HmacSha1](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#HmacSha1)
+-   [HmacSha256](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#HmacSha256)
+-   [HmacSha512](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#HmacSha512)
+-   [Md5String](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Md5String)
+-   [Md5File](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Md5File)
+-   [Sha1](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Sha1)
+-   [Sha256](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Sha256)
+-   [Sha512](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Sha512)
+-   [GenerateRsaKey](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#GenerateRsaKey)
+-   [RsaEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#RsaEncrypt)
+-   [RsaDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#RsaDecrypt)
+
+### 4. Datetime package supports date and time format and compare.
+
+```go
+import "github.com/duke-git/lancet/datetime"
+```
+
+#### Function list:
+
+-   [AddDay](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#AddDay)
+-   [AddHour](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#AddHour)
+-   [AddMinute](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#AddMinute)
+-   [AddYear](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#AddYear)
+-   [BeginOfMinute](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfMinute)
+-   [BeginOfHour](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfHour)
+-   [BeginOfDay](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfDay)
+-   [BeginOfWeek](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfWeek)
+-   [BeginOfMonth](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfMonth)
+-   [BeginOfYear](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfYear)
+-   [EndOfMinute](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#EndOfMinute)
+-   [EndOfHour](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#EndOfHour)
+-   [EndOfDay](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#EndOfDay)
+-   [EndOfWeek](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#EndOfWeek)
+-   [EndOfMonth](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#EndOfMonth)
+-   [EndOfYear](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#EndOfYear)
+-   [GetNowDate](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#GetNowDate)
+-   [GetNowTime](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#GetNowTime)
+-   [GetNowDateTime](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#GetNowDateTime)
+-   [GetZeroHourTimestamp](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#GetZeroHourTimestamp)
+-   [GetNightTimestamp](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#GetNightTimestamp)
+-   [FormatTimeToStr](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#FormatTimeToStr)
+-   [FormatStrToTime](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#FormatStrToTime)
+-   [NewUnix](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#NewUnix)
+-   [NewUnixNow](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#NewUnixNow)
+-   [NewFormat](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#NewFormat)
+-   [NewISO8601](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#NewISO8601)
+-   [ToUnix](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#ToUnix)
+-   [ToFormat](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#ToFormat)
+-   [ToFormatForTpl](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#ToFormatForTpl)
+-   [ToIso8601](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#ToIso8601)
+-   [IsLeapYear](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#IsLeapYear)
+-   [BetweenSeconds](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BetweenSeconds)
+-   [DayOfYear](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#DayOfYear)
+-   [IsWeekend](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#IsWeekend)
+
+### 5. Fileutil package implements some basic functions for file operations.
+
+```go
+import "github.com/duke-git/lancet/fileutil"
 ```

 #### Function list：

- [ClearFile](https://github.com/duke-git/lancet/blob/main/docs/fileutil.md#ClearFile)
- [CreateFile](https://github.com/duke-git/lancet/blob/main/docs/fileutil.md#CreateFile)
- [CopyFile](https://github.com/duke-git/lancet/blob/main/docs/fileutil.md#CopyFile)
- [FileMode](https://github.com/duke-git/lancet/blob/main/docs/fileutil.md#FileMode)
- [MiMeType](https://github.com/duke-git/lancet/blob/main/docs/fileutil.md#MiMeType)
- [IsExist](https://github.com/duke-git/lancet/blob/main/docs/fileutil.md#IsExist)
- [IsLink](https://github.com/duke-git/lancet/blob/main/docs/fileutil.md#IsLink)
- [IsDir](https://github.com/duke-git/lancet/blob/main/docs/fileutil.md#IsDir)
- [ListFileNames](https://github.com/duke-git/lancet/blob/main/docs/fileutil.md#ListFileNames)
- [RemoveFile](https://github.com/duke-git/lancet/blob/main/docs/fileutil.md#RemoveFile)
- [ReadFileToString](https://github.com/duke-git/lancet/blob/main/docs/fileutil.md#ReadFileToString)
- [ReadFileByLine](https://github.com/duke-git/lancet/blob/main/docs/fileutil.md#ReadFileByLine)
- [Zip](https://github.com/duke-git/lancet/blob/main/docs/fileutil.md#Zip)
- [UnZip](https://github.com/duke-git/lancet/blob/main/docs/fileutil.md#UnZip)
+-   [ClearFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#ClearFile)
+-   [CreateFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#CreateFile)
+-   [CreateDir](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#CreateDir)
+-   [CopyFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#CopyFile)
+-   [FileMode](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#FileMode)
+-   [MiMeType](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#MiMeType)
+-   [IsExist](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#IsExist)
+-   [IsLink](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#IsLink)
+-   [IsDir](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#IsDir)
+-   [ListFileNames](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#ListFileNames)
+-   [RemoveFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#RemoveFile)
+-   [ReadFileToString](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#ReadFileToString)
+-   [ReadFileByLine](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#ReadFileByLine)
+-   [Zip](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#Zip)
+-   [UnZip](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#UnZip)
+-   [CurrentPath](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#CurrentPath)
+-   [IsZipFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#IsZipFile)
+-   [FileSize](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#FileSize)
+-   [MTime](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#MTime)
+-   [Sha](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#Sha)
+-   [ReadCsvFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#ReadCsvFile)
+-   [WriteStringToFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#WriteStringToFile)
+-   [WriteBytesToFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#WriteBytesToFile)

-### Formatter contains some functions for data formatting.
+### 6. Formatter contains some functions for data formatting.

 ```go
-import "github.com/duke-git/lancet/v2/formatter"
-```
-#### Function list:
- [Comma](https://github.com/duke-git/lancet/blob/main/docs/formatter.md#Comma)
-
-### Function package can control the flow of function execution and support part of functional programming
-
-```go
-import "github.com/duke-git/lancet/v2/function"
-```
-
-#### Function list:
- [After](https://github.com/duke-git/lancet/blob/main/docs/function.md#After)
- [Before](https://github.com/duke-git/lancet/blob/main/docs/function.md#Before)
- [Curry](https://github.com/duke-git/lancet/blob/main/docs/function.md#Curry)
- [Compose](https://github.com/duke-git/lancet/blob/main/docs/function.md#Compose)
- [Debounced](https://github.com/duke-git/lancet/blob/main/docs/function.md#Debounced)
- [Delay](https://github.com/duke-git/lancet/blob/main/docs/function.md#Delay)
- [Watcher](https://github.com/duke-git/lancet/blob/main/docs/function.md#Watcher)
-
-
-### Mathutil package implements some functions for math calculation.
-
-```go
-import "github.com/duke-git/lancet/v2/mathutil"
-```
-
-#### Function list:
- [Average](https://github.com/duke-git/lancet/blob/main/docs/mathutil.md#Average)
- [Exponent](https://github.com/duke-git/lancet/blob/main/docs/mathutil.md#Exponent)
- [Fibonacci](https://github.com/duke-git/lancet/blob/main/docs/mathutil.md#Fibonacci)
- [Factorial](https://github.com/duke-git/lancet/blob/main/docs/mathutil.md#Factorial)
- [Max](https://github.com/duke-git/lancet/blob/main/docs/mathutil.md#Max)
- [Min](https://github.com/duke-git/lancet/blob/main/docs/mathutil.md#Min)
- [Percent](https://github.com/duke-git/lancet/blob/main/docs/mathutil.md#Percent)
- [RoundToFloat](https://github.com/duke-git/lancet/blob/main/docs/mathutil.md#RoundToFloat)
- [RoundToString](https://github.com/duke-git/lancet/blob/main/docs/mathutil.md#RoundToString)
- [TruncRound](https://github.com/duke-git/lancet/blob/main/docs/mathutil.md#TruncRound)
-
-
-### Netutil package contains functions to get net information and send http request.
-
-```go
-import "github.com/duke-git/lancet/v2/netutil"
-```
-
-#### Function list:
- [ConvertMapToQueryString](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#ConvertMapToQueryString)
- [GetInternalIp](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#GetInternalIp)
- [GetIps](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#GetIps)
- [GetMacAddrs](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#GetMacAddrs)
- [GetPublicIpInfo](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#GetPublicIpInfo)
- [IsPublicIP](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#IsPublicIP)
- [HttpGet](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#HttpGet)
- [HttpDelete](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#HttpDelete)
- [HttpPost](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#HttpPost)
- [HttpPut](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#HttpPut)
- [HttpPatch](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#HttpPatch)
- [ParseHttpResponse](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#ParseHttpResponse)
-
-### Random package implements some basic functions to generate random int and string.
-
-```go
-import "github.com/duke-git/lancet/v2/random"
-```
-
-#### Function list:
- [RandBytes](https://github.com/duke-git/lancet/blob/main/docs/random.md#RandBytes)
- [RandInt](https://github.com/duke-git/lancet/blob/main/docs/random.md#RandInt)
- [RandString](https://github.com/duke-git/lancet/blob/main/docs/random.md#RandString)
- [UUIdV4](https://github.com/duke-git/lancet/blob/main/docs/random.md#UUIdV4)
-
-### Retry package is for executing a function repeatedly until it was successful or canceled by the context.
-
-```go
-import "github.com/duke-git/lancet/v2/retry"
-```
-
-#### Function list:
- [Context](https://github.com/duke-git/lancet/blob/main/docs/retry.md#Context)
- [Retry](https://github.com/duke-git/lancet/blob/main/docs/retry.md#Retry)
- [RetryFunc](https://github.com/duke-git/lancet/blob/main/docs/retry.md#RetryFunc)
- [RetryDuration](https://github.com/duke-git/lancet/blob/main/docs/retry.md#RetryDuration)
- [RetryTimes](https://github.com/duke-git/lancet/blob/main/docs/retry.md#RetryTimes)
-
-### Slice contains some functions to manipulate slice.
-
-```go
-import "github.com/duke-git/lancet/v2/slice"
-```
-
-#### Function list:
- [Contain](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Contain)
- [ContainSubSlice](https://github.com/duke-git/lancet/blob/main/docs/slice.md#ContainSubSlice)
- [Chunk](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Chunk)
- [Compact](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Compact)
- [Concat](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Concat)
- [Count](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Count)
- [Difference](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Difference)
- [DifferenceBy](https://github.com/duke-git/lancet/blob/main/docs/slice.md#DifferenceBy)
- [DifferenceWith](https://github.com/duke-git/lancet/blob/main/docs/slice.md#DifferenceWith)
- [DeleteAt](https://github.com/duke-git/lancet/blob/main/docs/slice.md#DeleteAt)
- [Drop](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Drop)
- [Every](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Every)
- [Filter](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Filter)
- [Find](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Find)
- [FindLast](https://github.com/duke-git/lancet/blob/main/docs/slice.md#FindLast)
- [FlattenDeep](#FlattenDeep)
- [ForEach](https://github.com/duke-git/lancet/blob/main/docs/slice.md#ForEach)
- [GroupBy](https://github.com/duke-git/lancet/blob/main/docs/slice.md#GroupBy)
- [GroupWith](https://github.com/duke-git/lancet/blob/main/docs/slice.md#GroupWith)
- [IntSlice](https://github.com/duke-git/lancet/blob/main/docs/slice.md#IntSlice)
- [InterfaceSlice](https://github.com/duke-git/lancet/blob/main/docs/slice.md#InterfaceSlice)
- [Intersection](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Intersection)
- [InsertAt](https://github.com/duke-git/lancet/blob/main/docs/slice.md#InsertAt)
- [Map](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Map)
- [Reverse](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Reverse)
- [Reduce](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Reduce)
- [Shuffle](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Shuffle)
- [SortByField](https://github.com/duke-git/lancet/blob/main/docs/slice.md#SortByField)
- [Some](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Some)
- [StringSlice](https://github.com/duke-git/lancet/blob/main/docs/slice.md#StringSlice)
- [Unique](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Unique)
- [Union](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Union)
- [UpdateAt](https://github.com/duke-git/lancet/blob/main/docs/slice.md#UpdateAt)
- [Without](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Without)
-
-### Strutil package contains some functions to manipulate string.
-```go
-import "github.com/duke-git/lancet/v2/strutil"
+import "github.com/duke-git/lancet/formatter"
 ```

 #### Function list:

- [After](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#After)
- [AfterLast](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#AfterLast)
- [Before](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#Before)
- [BeforeLast](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#BeforeLast)
- [CamelCase](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#CamelCase)
- [Capitalize](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#Capitalize)
- [IsString](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#IsString)
- [KebabCase](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#KebabCase)
- [LowerFirst](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#LowerFirst)
- [UpperFirst](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#UpperFirst)
- [PadEnd](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#PadEnd)
- [PadStart](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#PadStart)
- [ReverseStr](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#ReverseStr)
- [SnakeCase](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#SnakeCase)
- [Wrap](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#Wrap)
- [Unwrap](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#Unwrap)
-  
-### System package contain some functions about os, runtime, shell command.
+-   [Comma](https://github.com/duke-git/lancet/blob/v1/docs/formatter.md#Comma)
+-   [Pretty](https://github.com/duke-git/lancet/blob/v1/docs/formatter.md#Pretty)
+-   [PrettyToWriter](https://github.com/duke-git/lancet/blob/v1/docs/formatter.md#PrettyToWriter)
+-   [DecimalBytes](https://github.com/duke-git/lancet/blob/v1/docs/formatter.md#DecimalBytes)
+-   [BinaryBytes](https://github.com/duke-git/lancet/blob/v1/docs/formatter.md#BinaryBytes)
+-   [ParseDecimalBytes](https://github.com/duke-git/lancet/blob/v1/docs/formatter.md#ParseDecimalBytes)
+-   [ParseBinaryBytes](https://github.com/duke-git/lancet/blob/v1/docs/formatter.md#ParseBinaryBytes)
+
+### 7. Function package can control the flow of function execution and support part of functional programming

 ```go
-import "github.com/duke-git/lancet/v2/system"
-```
-#### Function list:
- [IsWindows](https://github.com/duke-git/lancet/blob/main/docs/system.md#IsWindows)
- [IsLinux](https://github.com/duke-git/lancet/blob/main/docs/system.md#IsLinux)
- [IsMac](https://github.com/duke-git/lancet/blob/main/docs/system.md#IsMac)
- [GetOsEnv](https://github.com/duke-git/lancet/blob/main/docs/system.md#GetOsEnv)
- [SetOsEnv](https://github.com/duke-git/lancet/blob/main/docs/system.md#SetOsEnv)
- [RemoveOsEnv](https://github.com/duke-git/lancet/blob/main/docs/system.md#RemoveOsEnv)
- [CompareOsEnv](https://github.com/duke-git/lancet/blob/main/docs/system.md#CompareOsEnv)
- [ExecCommand](https://github.com/duke-git/lancet/blob/main/docs/system.md#ExecCommand)
-
-### Validator package contains some functions for data validation.
-
-```go
-import "github.com/duke-git/lancet/v2/validator"
+import "github.com/duke-git/lancet/function"
 ```

 #### Function list:

- [ContainChinese](https://github.com/duke-git/lancet/blob/main/docs/validator.md#ContainChinese)
- [ContainLetter](https://github.com/duke-git/lancet/blob/main/docs/validator.md#ContainLetter)
- [ContainLower](https://github.com/duke-git/lancet/blob/main/docs/validator.md#ContainLower)
- [ContainUpper](https://github.com/duke-git/lancet/blob/main/docs/validator.md#ContainUpper)
- [IsAlpha](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsAlpha)
- [IsAllUpper](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsAllUpper)
- [IsAllLower](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsAllLower)
- [IsBase64](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsBase64)
- [IsChineseMobile](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsChineseMobile)
- [IsChineseIdNum](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsChineseIdNum)
- [IsChinesePhone](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsChinesePhone)
- [IsCreditCard](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsCreditCard)
- [IsDns](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsDns)
- [IsEmail](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsEmail)
- [IsEmptyString](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsEmptyString)
- [IsFloatStr](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsFloatStr)
- [IsNumberStr](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsNumberStr)
- [IsJSON](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsJSON)
- [IsRegexMatch](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsRegexMatch)
- [IsIntStr](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsIntStr)
- [IsIp](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsIp)
- [IsIpV4](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsIpV4)
- [IsIpV6](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsIpV6)
- [IsStrongPassword](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsStrongPassword)
- [IsUrl](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsUrl)
- [IsWeakPassword](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsWeakPassword)
-### xerror package implements helpers for errors.
+-   [After](https://github.com/duke-git/lancet/blob/v1/docs/function.md#After)
+-   [Before](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Before)
+-   [Curry](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Curry)
+-   [Compose](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Compose)
+-   [Debounced](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Debounced)
+-   [Delay](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Delay)
+-   [Pipeline](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Pipeline)
+-   [Schedule](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Schedule)
+-   [Watcher](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Watcher)
+
+### 8. Mathutil package implements some functions for math calculation.

 ```go
-import "github.com/duke-git/lancet/v2/xerror"
+import "github.com/duke-git/lancet/mathutil"
 ```
+
 #### Function list:
- [Unwrap](https://github.com/duke-git/lancet/blob/main/docs/xerror.md#Unwrap)
-  
+
+-   [Exponent](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#Exponent)
+-   [Fibonacci](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#Fibonacci)
+-   [Factorial](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#Factorial)
+-   [Percent](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#Percent)
+-   [RoundToFloat](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#RoundToFloat)
+-   [RoundToString](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#RoundToString)
+-   [TruncRound](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#TruncRound)
+-   [AngleToRadian](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#AngleToRadian)
+-   [RadianToAngle](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#RadianToAngle)
+-   [PointDistance](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#PointDistance)
+-   [IsPrime](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#IsPrime)
+-   [GCD](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#GCD)
+-   [LCM](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#LCM)
+-   [Cos](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#Cos)
+-   [Sin](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#Sin)
+
+### 9. Netutil package contains functions to get net information and send http request.
+
+```go
+import "github.com/duke-git/lancet/netutil"
+```
+
+#### Function list:
+
+-   [ConvertMapToQueryString](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#ConvertMapToQueryString)
+-   [EncodeUrl](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#EncodeUrl)
+-   [GetInternalIp](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#GetInternalIp)
+-   [GetIps](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#GetIps)
+-   [GetMacAddrs](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#GetMacAddrs)
+-   [GetPublicIpInfo](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#GetPublicIpInfo)
+-   [GetRequestPublicIp](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#GetRequestPublicIp)
+-   [IsPublicIP](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#IsPublicIP)
+-   [IsInternalIP](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#IsInternalIP)
+-   [HttpGet](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#HttpGet)
+-   [HttpDelete](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#HttpDelete)
+-   [HttpPost](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#HttpPost)
+-   [HttpPut](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#HttpPut)
+-   [HttpPatch](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#HttpPatch)
+-   [ParseHttpResponse](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#ParseHttpResponse)
+-   [UploadFile](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#UploadFile)
+-   [DownloadFile](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#DownloadFile)
+-   [IsPingConnected](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#IsPingConnected)
+-   [IsTelnetConnected](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#IsTelnetConnected)
+
+### 10. Random package implements some basic functions to generate random int and string.
+
+```go
+import "github.com/duke-git/lancet/random"
+```
+
+#### Function list:
+
+-   [RandBytes](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandBytes)
+-   [RandInt](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandInt)
+-   [RandString](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandString)
+-   [RandUpper](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandUpper)
+-   [RandLower](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandLower)
+-   [RandNumeral](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandNumeral)
+-   [RandNumeralOrLetter](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandNumeralOrLetter)
+-   [UUIdV4](https://github.com/duke-git/lancet/blob/v1/docs/random.md#UUIdV4)
+
+### 11. Retry package is for executing a function repeatedly until it was successful or canceled by the context.
+
+```go
+import "github.com/duke-git/lancet/retry"
+```
+
+#### Function list:
+
+-   [Context](https://github.com/duke-git/lancet/blob/v1/docs/retry.md#Context)
+-   [Retry](https://github.com/duke-git/lancet/blob/v1/docs/retry.md#Retry)
+-   [RetryFunc](https://github.com/duke-git/lancet/blob/v1/docs/retry.md#RetryFunc)
+-   [RetryDuration](https://github.com/duke-git/lancet/blob/v1/docs/retry.md#RetryDuration)
+-   [RetryTimes](https://github.com/duke-git/lancet/blob/v1/docs/retry.md#RetryTimes)
+
+### 12. Slice contains some functions to manipulate slice.
+
+```go
+import "github.com/duke-git/lancet/slice"
+```
+
+#### Function list:
+
+-   [AppendIfAbsent](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#AppendIfAbsent)
+-   [Contain](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Contain)
+-   [ContainSubSlice](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#ContainSubSlice)
+-   [Chunk](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Chunk)
+-   [Compact](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Compact)
+-   [Concat](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Concat)
+-   [Count](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Count)
+-   [Difference](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Difference)
+-   [DifferenceBy](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#DifferenceBy)
+-   [DeleteByIndex](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#DeleteByIndex)
+-   [Drop](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Drop)
+-   [Every](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Every)
+-   [Equal](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Equal)
+-   [EqualWith](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#EqualWith)
+-   [Filter](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Filter)
+-   [Find](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Find)
+-   [FindLast](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#FindLast)
+-   [FlattenDeep](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#FlattenDeep)
+-   [ForEach](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#ForEach)
+-   [GroupBy](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#GroupBy)
+-   [IntSlice](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#IntSlice)
+-   [IndexOf](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#IndexOf)
+-   [LastIndexOf](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#LastIndexOf)
+-   [InterfaceSlice](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#InterfaceSlice)
+-   [Intersection](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Intersection)
+-   [InsertByIndex](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#InsertByIndex)
+-   [Map](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Map)
+-   [ReverseSlice](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#ReverseSlice)
+-   [Reduce](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Reduce)
+-   [Shuffle](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Shuffle)
+-   [SortByField](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#SortByField)
+-   [Some](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Some)
+-   [StringSlice](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#StringSlice)
+-   [ToSlice](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#ToSlice)
+-   [ToSlicePointer](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#ToSlice)
+-   [Unique](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Unique)
+-   [UniqueBy](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#UniqueBy)
+-   [Union](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Union)
+-   [UpdateByIndex](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#UpdateByIndex)
+-   [Without](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Without)
+
+### 13. Strutil package contains some functions to manipulate string.
+
+```go
+import "github.com/duke-git/lancet/strutil"
+```
+
+#### Function list:
+
+-   [After](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#After)
+-   [AfterLast](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#AfterLast)
+-   [Before](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Before)
+-   [BeforeLast](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#BeforeLast)
+-   [CamelCase](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#CamelCase)
+-   [Capitalize](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Capitalize)
+-   [ContainsAll](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#ContainsAll)
+-   [ContainsAny](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#ContainsAny)
+-   [IsString](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#IsString)
+-   [KebabCase](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#KebabCase)
+-   [UpperKebabCase](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#UpperKebabCase)
+-   [LowerFirst](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#LowerFirst)
+-   [UpperFirst](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#UpperFirst)
+-   [Pad](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Pad)
+-   [PadEnd](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#PadEnd)
+-   [PadStart](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#PadStart)
+-   [Reverse](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Reverse)
+-   [SnakeCase](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#SnakeCase)
+-   [UpperSnakeCase](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#UpperSnakeCase)
+-   [SplitEx](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#SplitEx)
+-   [Wrap](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Wrap)
+-   [Unwrap](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Unwrap)
+-   [SplitWords](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#SplitWords)
+-   [WordCount](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#WordCount)
+-   [RemoveNonPrintable](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#RemoveNonPrintable)
+-   [StringToBytes](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#StringToBytes)
+-   [BytesToString](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#BytesToString)
+-   [IsBlank](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#IsBlank)
+-   [HasPrefixAny](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#HasPrefixAny)
+-   [HasSuffixAny](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#HasSuffixAny)
+-   [IndexOffset](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#IndexOffset)
+-   [ReplaceWithMap](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#ReplaceWithMap)
+-   [Trim](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Trim)
+-   [SplitAndTrim](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#SplitAndTrim)
+-   [HideString](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#HideString)
+
+### 14. System package contain some functions about os, runtime, shell command.
+
+```go
+import "github.com/duke-git/lancet/system"
+```
+
+#### Function list:
+
+-   [IsWindows](https://github.com/duke-git/lancet/blob/v1/docs/system.md#IsWindows)
+-   [IsLinux](https://github.com/duke-git/lancet/blob/v1/docs/system.md#IsLinux)
+-   [IsMac](https://github.com/duke-git/lancet/blob/v1/docs/system.md#IsMac)
+-   [GetOsEnv](https://github.com/duke-git/lancet/blob/v1/docs/system.md#GetOsEnv)
+-   [SetOsEnv](https://github.com/duke-git/lancet/blob/v1/docs/system.md#SetOsEnv)
+-   [RemoveOsEnv](https://github.com/duke-git/lancet/blob/v1/docs/system.md#RemoveOsEnv)
+-   [CompareOsEnv](https://github.com/duke-git/lancet/blob/v1/docs/system.md#CompareOsEnv)
+-   [ExecCommand](https://github.com/duke-git/lancet/blob/v1/docs/system.md#ExecCommand)
+-   [GetOsBits](https://github.com/duke-git/lancet/blob/v1/docs/system.md#GetOsBits)
+
+### 15. Validator package contains some functions for data validation.
+
+```go
+import "github.com/duke-git/lancet/validator"
+```
+
+#### Function list:
+
+-   [ContainChinese](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#ContainChinese)
+-   [ContainLetter](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#ContainLetter)
+-   [ContainLower](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#ContainLower)
+-   [ContainUpper](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#ContainUpper)
+-   [IsAlpha](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsAlpha)
+-   [IsAllUpper](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsAllUpper)
+-   [IsAllLower](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsAllLower)
+-   [IsBase64](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsBase64)
+-   [IsChineseMobile](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsChineseMobile)
+-   [IsChineseIdNum](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsChineseIdNum)
+-   [IsChinesePhone](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsChinesePhone)
+-   [IsCreditCard](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsCreditCard)
+-   [IsDns](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsDns)
+-   [IsEmail](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsEmail)
+-   [IsEmptyString](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsEmptyString)
+-   [IsInt](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsInt)
+-   [IsFloat](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsFloat)
+-   [IsNumber](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsNumber)
+-   [IsIntStr](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsIntStr)
+-   [IsFloatStr](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsFloatStr)
+-   [IsNumberStr](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsNumberStr)
+-   [IsJSON](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsJSON)
+-   [IsRegexMatch](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsRegexMatch)
+-   [IsIp](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsIp)
+-   [IsIpV4](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsIpV4)
+-   [IsIpV6](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsIpV6)
+-   [IsStrongPassword](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsStrongPassword)
+-   [IsUrl](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsUrl)
+-   [IsWeakPassword](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsWeakPassword)
+-   [IsZeroValue](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsZeroValue)
+-   [IsGBK](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsGBK)
+-   [IsASCII](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsASCII)
+-   [IsPrintable](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsPrintable)

 ## How to Contribute

--- a/README_zh-CN.md
+++ b/README_zh-CN.md
@@ -3,13 +3,13 @@

 <br/>

-![Go version](https://img.shields.io/badge/go-%3E%3D1.16<recommend>-9cf)
-[![Release](https://img.shields.io/badge/release-2.0.1-green.svg)](https://github.com/duke-git/lancet/releases)
-[![GoDoc](https://godoc.org/github.com/duke-git/lancet/v2?status.svg)](https://pkg.go.dev/github.com/duke-git/lancet/v2)
-[![Go Report Card](https://goreportcard.com/badge/github.com/duke-git/lancet/v2)](https://goreportcard.com/report/github.com/duke-git/lancet/v2)
+![Go version](https://img.shields.io/badge/go-v1.16-9cf)
+[![Release](https://img.shields.io/badge/release-1.3.9-green.svg)](https://github.com/duke-git/lancet/releases)
+[![GoDoc](https://godoc.org/github.com//duke-git/lancet?status.svg)](https://pkg.go.dev/github.com/duke-git/lancet)
+[![Go Report Card](https://goreportcard.com/badge/github.com/duke-git/lancet)](https://goreportcard.com/report/github.com/duke-git/lancet)
 [![test](https://github.com/duke-git/lancet/actions/workflows/codecov.yml/badge.svg?branch=main&event=push)](https://github.com/duke-git/lancet/actions/workflows/codecov.yml)
 [![codecov](https://codecov.io/gh/duke-git/lancet/branch/main/graph/badge.svg?token=FC48T1F078)](https://codecov.io/gh/duke-git/lancet)
-[![License](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/duke-git/lancet/blob/main/LICENSE)
+[![License](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/duke-git/lancet/blob/v1/LICENSE)

 </div>

@@ -20,413 +20,479 @@

 简体中文 | [English](./README.md)

-
 ## 特性

- 👏 全面、高效、可复用
- 💪 250+常用go工具函数，支持string、slice、datetime、net、crypt...
- 💅 只依赖go标准库
- 🌍 所有导出函数单元测试覆盖率100%
+-   👏 全面、高效、可复用
+-   💪 400+常用 go 工具函数，支持 string、slice、datetime、net、crypt...
+-   💅 只依赖 go 标准库
+-   🌍 所有导出函数单元测试覆盖率 100%

 ## 安装
-### Note: 
-1. <b>对于使用go1.18及以上的用户，建议安装v2.x.x。 因为v2.x.x用go1.18的泛型重写了大部分函数。</b>

 ```go
-go get github.com/duke-git/lancet/v2 //安装v2最新版本v2.x.x
-```
-
-2. <b>使用go1.18以下版本的用户，必须安装v1.x.x。目前最新的v1版本是v1.2.6。</b>
-```go
-go get github.com/duke-git/lancet@v1.2.6 // 使用go1.18以下版本, 必须安装v1.x.x版本
+go get github.com/duke-git/lancet
 ```

 ## 用法

-lancet是以包的结构组织代码的，使用时需要导入相应的包名。例如：如果使用字符串相关函数，需要导入strutil包:
+lancet 是以包的结构组织代码的，使用时需要导入相应的包名。例如：如果使用字符串相关函数，需要导入 strutil 包:

 ```go
-import "github.com/duke-git/lancet/v2/strutil"
+import "github.com/duke-git/lancet/strutil"
 ```

 ## 例子

-此处以字符串工具函数ReverseStr（逆序字符串）为例，需要导入strutil包:
+此处以字符串工具函数 Reverse（逆序字符串）为例，需要导入 strutil 包:

 ```go
 package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/strutil"
+    "github.com/duke-git/lancet/strutil"
 )

 func main() {
    s := "hello"
-    rs := strutil.ReverseStr(s)
+    rs := strutil.Reverse(s)
    fmt.Println(rs) //olleh
 }
 ```

-## API文档
+## API 文档

-### algorithm算法包实现一些基本算法。eg. sort, search.

+### 1. compare包提供几个轻量级的类型比较函数。
 ```go
-import "github.com/duke-git/lancet/v2/algorithm"
+import "github.com/duke-git/lancet/compare"
 ```
+
 #### Function list:
- [BubbleSort](https://github.com/duke-git/lancet/blob/main/docs/algorithm_zh-CN.md#BubbleSort)
- [CountSort](https://github.com/duke-git/lancet/blob/main/docs/algorithm_zh-CN.md#CountSort)
- [HeapSort](https://github.com/duke-git/lancet/blob/main/docs/algorithm_zh-CN.md#HeapSort)
- [InsertionSort](https://github.com/duke-git/lancet/blob/main/docs/algorithm_zh-CN.md#InsertionSort)
- [MergeSort](https://github.com/duke-git/lancet/blob/main/docs/algorithm_zh-CN.md#MergeSort)
- [QuickSort](https://github.com/duke-git/lancet/blob/main/docs/algorithm_zh-CN.md#QuickSort)
- [SelectionSort](https://github.com/duke-git/lancet/blob/main/docs/algorithm_zh-CN.md#SelectionSort)
- [ShellSort](https://github.com/duke-git/lancet/blob/main/docs/algorithm_zh-CN.md#ShellSort)
- [BinarySearch](https://github.com/duke-git/lancet/blob/main/docs/algorithm_zh-CN.md#BinarySearch)
- [BinaryIterativeSearch](https://github.com/duke-git/lancet/blob/main/docs/algorithm_zh-CN.md#BinaryIterativeSearch)
- [LinearSearch](https://github.com/duke-git/lancet/blob/main/docs/algorithm_zh-CN.md#LinearSearch)
- [LRUCache](https://github.com/duke-git/lancet/blob/main/docs/algorithm_zh-CN.md#LRUCache)

-### convertor转换器包支持一些常见的数据类型转换。
+-   [Equal](https://github.com/duke-git/lancet/blob/v1/docs/compare_zh-CN.md#Equal)
+-   [EqualValue](https://github.com/duke-git/lancet/blob/v1/docs/compare_zh-CN.md#EqualValue)
+-   [LessThan](https://github.com/duke-git/lancet/blob/v1/docs/compare_zh-CN.md#LessThan)
+-   [GreaterThan](https://github.com/duke-git/lancet/blob/v1/docs/compare_zh-CN.md#GreaterThan)
+-   [LessOrEqual](https://github.com/duke-git/lancet/blob/v1/docs/compare_zh-CN.md#LessOrEqual)
+-   [GreaterOrEqual](https://github.com/duke-git/lancet/blob/v1/docs/compare_zh-CN.md#GreaterOrEqual)
+
+### 2. convertor转换器包支持一些常见的数据类型转换。

 ```go
-import "github.com/duke-git/lancet/v2/convertor"
-```
-#### 函数列表:
- [ColorHexToRGB](https://github.com/duke-git/lancet/blob/main/docs/convertor_zh-CN.md#ColorHexToRGB)
- [ColorRGBToHex](https://github.com/duke-git/lancet/blob/main/docs/convertor_zh-CN.md#ColorRGBToHex)
- [ToBool](https://github.com/duke-git/lancet/blob/main/docs/convertor_zh-CN.md#ToBool)
- [ToBytes](https://github.com/duke-git/lancet/blob/main/docs/convertor_zh-CN.md#ToBytes)
- [ToChar](https://github.com/duke-git/lancet/blob/main/docs/convertor_zh-CN.md#ToChar)
- [ToInt](https://github.com/duke-git/lancet/blob/main/docs/convertor_zh-CN.md#ToInt)
- [ToJson](https://github.com/duke-git/lancet/blob/main/docs/convertor_zh-CN.md#ToJson)
- [ToString](https://github.com/duke-git/lancet/blob/main/docs/convertor_zh-CN.md#ToString)
- [StructToMap](https://github.com/duke-git/lancet/blob/main/docs/convertor_zh-CN.md#StructToMap)
-  
-### cryptor加密包支持数据加密和解密，获取md5，hash值。支持base64, md5, hmac, aes, des, rsa。
-
-```go
-import "github.com/duke-git/lancet/v2/cryptor"
+import "github.com/duke-git/lancet/convertor"
 ```

 #### 函数列表:
- [AesEcbEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#AesEcbEncrypt)
- [AesEcbDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#AesEcbDecrypt)
- [AesCbcEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#AesCbcEncrypt)
- [AesCbcDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#AesCbcDecrypt)
- [AesCtrCrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#AesCtrCrypt)
- [AesCfbEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#AesCfbEncrypt)
- [AesCfbDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#AesCfbDecrypt)
- [AesOfbEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#AesOfbEncrypt)
- [AesOfbDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#AesOfbDecrypt)
- [Base64StdEncode](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#Base64StdEncode)
- [Base64StdDecode](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#Base64StdDecode)
- [DesEcbEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#DesEcbEncrypt)
- [DesEcbDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#DesEcbDecrypt)
- [DesCbcEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#DesCbcEncrypt)
- [DesCbcDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#DesCbcDecrypt)
- [DesCtrCrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#DesCtrCrypt)
- [DesCfbEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#DesCfbEncrypt)
- [DesCfbDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#DesCfbDecrypt)
- [DesOfbEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#DesOfbEncrypt)
- [DesOfbDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#DesOfbDecrypt)
- [HmacMd5](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#HmacMd5)
- [HmacSha1](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#HmacSha1)
- [HmacSha256](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#HmacSha256)
- [HmacSha512](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#HmacSha512)
- [Md5String](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#Md5String)
- [Md5File](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#Md5File)
- [Sha1](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#Sha1)
- [Sha256](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#Sha256)
- [Sha512](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#Sha512)
- [GenerateRsaKey](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#GenerateRsaKey)
- [RsaEncrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#RsaEncrypt)
- [RsaDecrypt](https://github.com/duke-git/lancet/blob/main/docs/cryptor_zh-CN.md#RsaDecrypt)

-### datetime日期时间处理包，格式化日期，比较日期。
+-   [ColorHexToRGB](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ColorHexToRGB)
+-   [ColorRGBToHex](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ColorRGBToHex)
+-   [ToBool](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ToBool)
+-   [ToBytes](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ToBytes)
+-   [ToChar](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ToChar)
+-   [ToChannel](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ToChannel)
+-   [ToInt](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ToInt)
+-   [ToJson](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ToJson)
+-   [ToString](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ToString)
+-   [StructToMap](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#StructToMap)
+-   [EncodeByte](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#EncodeByte)
+-   [DecodeByte](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#DecodeByte)
+-   [DeepClone](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#DeepClone)
+-   [CopyProperties](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#CopyProperties)

+### 3. cryptor 加密包支持数据加密和解密，获取 md5，hash 值。支持 base64, md5, hmac, aes, des, rsa。

 ```go
-import "github.com/duke-git/lancet/v2/datetime"
+import "github.com/duke-git/lancet/cryptor"
 ```
-#### 函数列表:
- [AddDay](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#AddDay)
- [AddHour](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#AddHour)
- [AddMinute](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#AddMinute)
- [BeginOfMinute](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#BeginOfMinute)
- [BeginOfHour](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#BeginOfHour)
- [BeginOfDay](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#BeginOfDay)
- [BeginOfWeek](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#BeginOfWeek)
- [BeginOfMonth](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#BeginOfMonth)
- [BeginOfYear](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#BeginOfYear)
- [EndOfMinute](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#EndOfMinute)
- [EndOfHour](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#EndOfHour)
- [EndOfDay](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#EndOfDay)
- [EndOfWeek](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#EndOfWeek)
- [EndOfMonth](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#EndOfMonth)
- [EndOfYear](https://github.com/duke-git/lancet/blob/main/docs/datetime.md#EndOfYear)
- [GetNowDate](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#GetNowDate)
- [GetNowTime](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#GetNowTime)
- [GetNowDateTime](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#GetNowDateTime)
- [GetZeroHourTimestamp](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#GetZeroHourTimestamp)
- [GetNightTimestamp](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#GetNightTimestamp)
- [FormatTimeToStr](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#FormatTimeToStr)
- [FormatStrToTime](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#FormatStrToTime)
- [NewUnix](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#NewUnix)
- [NewUnixNow](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#NewUnixNow)
- [NewFormat](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#NewFormat)
- [NewISO8601](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#NewISO8601)
- [ToUnix](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#ToUnix)
- [ToFormat](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#ToFormat)
- [ToFormatForTpl](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#ToFormatForTpl)
- [ToIso8601](https://github.com/duke-git/lancet/blob/main/docs/datetime_zh-CN.md#ToIso8601)

-### fileutil包支持文件基本操作。
+#### 函数列表:
+
+-   [AesEcbEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#AesEcbEncrypt)
+-   [AesEcbDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#AesEcbDecrypt)
+-   [AesCbcEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#AesCbcEncrypt)
+-   [AesCbcDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#AesCbcDecrypt)
+-   [AesCtrCrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#AesCtrCrypt)
+-   [AesCfbEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#AesCfbEncrypt)
+-   [AesCfbDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#AesCfbDecrypt)
+-   [AesOfbEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#AesOfbEncrypt)
+-   [AesOfbDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#AesOfbDecrypt)
+-   [Base64StdEncode](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Base64StdEncode)
+-   [Base64StdDecode](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Base64StdDecode)
+-   [DesEcbEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#DesEcbEncrypt)
+-   [DesEcbDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#DesEcbDecrypt)
+-   [DesCbcEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#DesCbcEncrypt)
+-   [DesCbcDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#DesCbcDecrypt)
+-   [DesCtrCrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#DesCtrCrypt)
+-   [DesCfbEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#DesCfbEncrypt)
+-   [DesCfbDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#DesCfbDecrypt)
+-   [DesOfbEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#DesOfbEncrypt)
+-   [DesOfbDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#DesOfbDecrypt)
+-   [HmacMd5](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#HmacMd5)
+-   [HmacSha1](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#HmacSha1)
+-   [HmacSha256](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#HmacSha256)
+-   [HmacSha512](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#HmacSha512)
+-   [Md5String](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Md5String)
+-   [Md5File](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Md5File)
+-   [Sha1](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Sha1)
+-   [Sha256](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Sha256)
+-   [Sha512](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Sha512)
+-   [GenerateRsaKey](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#GenerateRsaKey)
+-   [RsaEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#RsaEncrypt)
+-   [RsaDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#RsaDecrypt)
+
+### 4. datetime 日期时间处理包，格式化日期，比较日期。

 ```go
-import "github.com/duke-git/lancet/v2/fileutil"
+import "github.com/duke-git/lancet/datetime"
+```
+
+#### 函数列表:
+
+-   [AddDay](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#AddDay)
+-   [AddHour](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#AddHour)
+-   [AddMinute](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#AddMinute)
+-   [AddYear](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#AddYear)
+-   [BeginOfMinute](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfMinute)
+-   [BeginOfHour](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfHour)
+-   [BeginOfDay](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfDay)
+-   [BeginOfWeek](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfWeek)
+-   [BeginOfMonth](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfMonth)
+-   [BeginOfYear](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfYear)
+-   [EndOfMinute](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#EndOfMinute)
+-   [EndOfHour](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#EndOfHour)
+-   [EndOfDay](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#EndOfDay)
+-   [EndOfWeek](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#EndOfWeek)
+-   [EndOfMonth](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#EndOfMonth)
+-   [EndOfYear](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#EndOfYear)
+-   [GetNowDate](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#GetNowDate)
+-   [GetNowTime](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#GetNowTime)
+-   [GetNowDateTime](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#GetNowDateTime)
+-   [GetZeroHourTimestamp](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#GetZeroHourTimestamp)
+-   [GetNightTimestamp](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#GetNightTimestamp)
+-   [FormatTimeToStr](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#FormatTimeToStr)
+-   [FormatStrToTime](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#FormatStrToTime)
+-   [NewUnix](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#NewUnix)
+-   [NewUnixNow](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#NewUnixNow)
+-   [NewFormat](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#NewFormat)
+-   [NewISO8601](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#NewISO8601)
+-   [ToUnix](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#ToUnix)
+-   [ToFormat](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#ToFormat)
+-   [ToFormatForTpl](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#ToFormatForTpl)
+-   [ToIso8601](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#ToIso8601)
+-   [IsLeapYear](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#IsLeapYear)
+-   [BetweenSeconds](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#BetweenSeconds)
+-   [DayOfYear](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#DayOfYear)
+-   [IsWeekend](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#IsWeekend)
+
+### 5. fileutil 包支持文件基本操作。
+
+```go
+import "github.com/duke-git/lancet/fileutil"
 ```

 #### 函数列表：

- [ClearFile](https://github.com/duke-git/lancet/blob/main/docs/fileutil_zh-CN.md#ClearFile)
- [CreateFile](https://github.com/duke-git/lancet/blob/main/docs/fileutil_zh-CN.md#CreateFile)
- [CopyFile](https://github.com/duke-git/lancet/blob/main/docs/fileutil_zh-CN.md#CopyFile)
- [FileMode](https://github.com/duke-git/lancet/blob/main/docs/fileutil_zh-CN.md#FileMode)
- [MiMeType](https://github.com/duke-git/lancet/blob/main/docs/fileutil_zh-CN.md#MiMeType)
- [IsExist](https://github.com/duke-git/lancet/blob/main/docs/fileutil_zh-CN.md#IsExist)
- [IsLink](https://github.com/duke-git/lancet/blob/main/docs/fileutil_zh-CN.md#IsLink)
- [IsDir](https://github.com/duke-git/lancet/blob/main/docs/fileutil_zh-CN.md#IsDir)
- [ListFileNames](https://github.com/duke-git/lancet/blob/main/docs/fileutil_zh-CN.md#ListFileNames)
- [RemoveFile](https://github.com/duke-git/lancet/blob/main/docs/fileutil_zh-CN.md#RemoveFile)
- [ReadFileToString](https://github.com/duke-git/lancet/blob/main/docs/fileutil_zh-CN.md#ReadFileToString)
- [ReadFileByLine](https://github.com/duke-git/lancet/blob/main/docs/fileutil_zh-CN.md#ReadFileByLine)
- [Zip](https://github.com/duke-git/lancet/blob/main/docs/fileutil_zh-CN.md#Zip)
- [UnZip](https://github.com/duke-git/lancet/blob/main/docs/fileutil_zh-CN.md#UnZip)
+-   [ClearFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#ClearFile)
+-   [CreateFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#CreateFile)
+-   [CreateDir](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#CreateDir)
+-   [CopyFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#CopyFile)
+-   [FileMode](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#FileMode)
+-   [MiMeType](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#MiMeType)
+-   [IsExist](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#IsExist)
+-   [IsLink](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#IsLink)
+-   [IsDir](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#IsDir)
+-   [ListFileNames](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#ListFileNames)
+-   [RemoveFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#RemoveFile)
+-   [ReadFileToString](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#ReadFileToString)
+-   [ReadFileByLine](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#ReadFileByLine)
+-   [Zip](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#Zip)
+-   [UnZip](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#UnZip)
+-   [CurrentPath](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#CurrentPath)
+-   [IsZipFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#IsZipFile)
+-   [FileSize](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#FileSize)
+-   [MTime](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#MTime)
+-   [Sha](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#Sha)
+-   [ReadCsvFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#ReadCsvFile)
+-   [WriteStringToFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#WriteStringToFile)
+-   [WriteBytesToFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#WriteBytesToFile)

-### formatter格式化器包含一些数据格式化处理方法。
+### 6. formatter 格式化器包含一些数据格式化处理方法。

 ```go
-import "github.com/duke-git/lancet/v2/formatter"
-```
-#### 函数列表:
- [Comma](https://github.com/duke-git/lancet/blob/main/docs/formatter_zh-CN.md#Comma)
-
-
-### function函数包控制函数执行流程，包含部分函数式编程。
-
-```go
-import "github.com/duke-git/lancet/v2/function"
+import "github.com/duke-git/lancet/formatter"
 ```

 #### 函数列表:
- [After](https://github.com/duke-git/lancet/blob/main/docs/function_zh-CN.md#After)
- [Before](https://github.com/duke-git/lancet/blob/main/docs/function_zh-CN.md#Before)
- [Curry](https://github.com/duke-git/lancet/blob/main/docs/function_zh-CN.md#Curry)
- [Compose](https://github.com/duke-git/lancet/blob/main/docs/function_zh-CN.md#Compose)
- [Debounced](https://github.com/duke-git/lancet/blob/main/docs/function_zh-CN.md#Debounced)
- [Delay](https://github.com/duke-git/lancet/blob/main/docs/function_zh-CN.md#Delay)
- [Watcher](https://github.com/duke-git/lancet/blob/main/docs/function_zh-CN.md#Watcher)

-### mathutil包实现了一些数学计算的函数。
+-   [Comma](https://github.com/duke-git/lancet/blob/v1/docs/formatter_zh-CN.md#Comma)
+-   [Pretty](https://github.com/duke-git/lancet/blob/v1/docs/formatter_zh-CN.md#Pretty)
+-   [PrettyToWriter](https://github.com/duke-git/lancet/blob/v1/docs/formatter_zh-CN.md#PrettyToWriter)
+-   [DecimalBytes](https://github.com/duke-git/lancet/blob/v1/docs/formatter_zh-CN.md#DecimalBytes)
+-   [BinaryBytes](https://github.com/duke-git/lancet/blob/v1/docs/formatter_zh-CN.md#BinaryBytes)
+-   [ParseDecimalBytes](https://github.com/duke-git/lancet/blob/v1/docs/formatter_zh-CN.md#ParseDecimalBytes)
+-   [ParseBinaryBytes](https://github.com/duke-git/lancet/blob/v1/docs/formatter_zh-CN.md#ParseBinaryBytes)
+
+### 7. function 函数包控制函数执行流程，包含部分函数式编程。

 ```go
-import "github.com/duke-git/lancet/v2/mathutil"
+import "github.com/duke-git/lancet/function"
+```
+
+#### 函数列表:
+
+-   [After](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#After)
+-   [Before](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Before)
+-   [Curry](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Curry)
+-   [Compose](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Compose)
+-   [Debounced](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Debounced)
+-   [Delay](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Delay)
+-   [Pipeline](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Pipeline)
+-   [Schedule](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Schedule)
+-   [Watcher](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Watcher)
+
+### 8. mathutil 包实现了一些数学计算的函数。
+
+```go
+import "github.com/duke-git/lancet/mathutil"
 ```

 #### Function list:
- [Average](https://github.com/duke-git/lancet/blob/main/docs/mathutil_zh-CN.md#Average)
- [Exponent](https://github.com/duke-git/lancet/blob/main/docs/mathutil_zh-CN.md#Exponent)
- [Fibonacci](https://github.com/duke-git/lancet/blob/main/docs/mathutil_zh-CN.md#Fibonacci)
- [Factorial](https://github.com/duke-git/lancet/blob/main/docs/mathutil_zh-CN.md#Factorial)
- [Max](https://github.com/duke-git/lancet/blob/main/docs/mathutil_zh-CN.md#Max)
- [Min](https://github.com/duke-git/lancet/blob/main/docs/mathutil_zh-CN.md#Min)
- [Percent](https://github.com/duke-git/lancet/blob/main/docs/mathutil_zh-CN.md#Percent)
- [RoundToFloat](https://github.com/duke-git/lancet/blob/main/docs/mathutil_zh-CN.md#RoundToFloat)
- [RoundToString](https://github.com/duke-git/lancet/blob/main/docs/mathutil_zh-CN.md#RoundToString)
- [TruncRound](https://github.com/duke-git/lancet/blob/main/docs/mathutil_zh-CN.md#TruncRound)

-### netutil网络包支持获取ip地址，发送http请求。
+-   [Exponent](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#Exponent)
+-   [Fibonacci](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#Fibonacci)
+-   [Factorial](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#Factorial)
+-   [Percent](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#Percent)
+-   [RoundToFloat](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#RoundToFloat)
+-   [RoundToString](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#RoundToString)
+-   [TruncRound](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#TruncRound)
+-   [AngleToRadian](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#AngleToRadian)
+-   [RadianToAngle](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#RadianToAngle)
+-   [PointDistance](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#PointDistance)
+-   [IsPrime](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#IsPrime)
+-   [GCD](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#GCD)
+-   [LCM](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#LCM)
+-   [Cos](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#Cos)
+-   [Sin](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#Sin)
+
+### 9. netutil 网络包支持获取 ip 地址，发送 http 请求。

 ```go
-import "github.com/duke-git/lancet/v2/netutil"
-```
-
-#### 函数列表:
- [ConvertMapToQueryString](https://github.com/duke-git/lancet/blob/main/docs/netutil_zh-CN.md#ConvertMapToQueryString)
- [GetInternalIp](https://github.com/duke-git/lancet/blob/main/docs/netutil_zh-CN.md#GetInternalIp)
- [GetIps](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#GetIps)
- [GetMacAddrs](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#GetMacAddrs)
- [GetPublicIpInfo](https://github.com/duke-git/lancet/blob/main/docs/netutil_zh-CN.md#GetPublicIpInfo)
- [IsPublicIP](https://github.com/duke-git/lancet/blob/main/docs/netutil_zh-CN.md#IsPublicIP)
- [HttpGet](https://github.com/duke-git/lancet/blob/main/docs/netutil_zh-CN.md#HttpGet)
- [HttpDelete](https://github.com/duke-git/lancet/blob/main/docs/netutil_zh-CN.md#HttpDelete)
- [HttpPost](https://github.com/duke-git/lancet/blob/main/docs/netutil_zh-CN.md#HttpPost)
- [HttpPut](https://github.com/duke-git/lancet/blob/main/docs/netutil_zh-CN.md#HttpPut)
- [HttpPatch](https://github.com/duke-git/lancet/blob/main/docs/netutil_zh-CN.md#HttpPatch)
- [ParseHttpResponse](https://github.com/duke-git/lancet/blob/main/docs/netutil_zh-CN.md#ParseHttpResponse)
-
-### random随机数生成器包，可以生成随机[]bytes, int, string。
-
-```go
-import "github.com/duke-git/lancet/v2/random"
-```
-
-#### 函数列表:
- [RandBytes](https://github.com/duke-git/lancet/blob/main/docs/random_zh-CN.md#RandBytes)
- [RandInt](https://github.com/duke-git/lancet/blob/main/docs/random_zh-CN.md#RandInt)
- [RandString](https://github.com/duke-git/lancet/blob/main/docs/random_zh-CN.md#RandString)
- [UUIdV4](https://github.com/duke-git/lancet/blob/main/docs/random.md#UUIdV4)
-### retry重试执行函数直到函数运行成功或被context cancel。
-
-```go
-import "github.com/duke-git/lancet/v2/retry"
-```
-
-#### 函数列表:
- [Context](https://github.com/duke-git/lancet/blob/main/docs/retry_zh-CN.md#Context)
- [Retry](https://github.com/duke-git/lancet/blob/main/docs/retry_zh-CN.md#Retry)
- [RetryFunc](https://github.com/duke-git/lancet/blob/main/docs/retry_zh-CN.md#RetryFunc)
- [RetryDuration](https://github.com/duke-git/lancet/blob/main/docs/retry_zh-CN.md#RetryDuration)
- [RetryTimes](https://github.com/duke-git/lancet/blob/main/docs/retry_zh-CN.md#RetryTimes)
-
-
-### slice包包含操作切片的方法集合。
-
-```go
-import "github.com/duke-git/lancet/v2/slice"
-```
-
-#### 函数列表:
- [Contain](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Contain)
- [ContainSubSlice](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#ContainSubSlice)
- [Chunk](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Chunk)
- [Compact](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Compact)
- [Concat](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Concat)
- [Count](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Count)
- [Difference](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Difference)
- [DifferenceBy](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#DifferenceBy)
- [DifferenceWith](https://github.com/duke-git/lancet/blob/main/docs/slice.md#DifferenceWith)
- [DeleteAt](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#DeleteAt)
- [Drop](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Drop)
- [Every](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Every)
- [Filter](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Filter)
- [Find](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Find)
- [FindLast](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#FindLast)
- [FlattenDeep](#FlattenDeep)
- [ForEach](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#ForEach)
- [GroupBy](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#GroupBy)
- [GroupWith](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#GroupWith)
- [IntSlice](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#IntSlice)
- [InterfaceSlice](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#InterfaceSlice)
- [Intersection](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Intersection)
- [InsertAt](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#InsertAt)
- [Map](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Map)
- [Reverse](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Reverse)
- [Reduce](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Reduce)
- [Shuffle](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Shuffle)
- [SortByField](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#SortByField)
- [Some](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Some)
- [StringSlice](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#StringSlice)
- [Unique](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Unique)
- [Union](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Union)
- [UpdateAt](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#UpdateAt)
- [Without](https://github.com/duke-git/lancet/blob/main/docs/slice_zh-CN.md#Without)
-
-
-### strutil包含处理字符串的相关函数。
-
-```go
-import "github.com/duke-git/lancet/v2/strutil"
+import "github.com/duke-git/lancet/netutil"
 ```

 #### 函数列表:

- [After](https://github.com/duke-git/lancet/blob/main/docs/strutil_zh-CN.md#After)
- [AfterLast](https://github.com/duke-git/lancet/blob/main/docs/strutil_zh-CN.md#AfterLast)
- [Before](https://github.com/duke-git/lancet/blob/main/docs/strutil_zh-CN.md#Before)
- [BeforeLast](https://github.com/duke-git/lancet/blob/main/docs/strutil_zh-CN.md#BeforeLast)
- [CamelCase](https://github.com/duke-git/lancet/blob/main/docs/strutil_zh-CN.md#CamelCase)
- [Capitalize](https://github.com/duke-git/lancet/blob/main/docs/strutil_zh-CN.md#Capitalize)
- [IsString](https://github.com/duke-git/lancet/blob/main/docs/strutil_zh-CN.md#IsString)
- [KebabCase](https://github.com/duke-git/lancet/blob/main/docs/strutil_zh-CN.md#KebabCase)
- [LowerFirst](https://github.com/duke-git/lancet/blob/main/docs/strutil_zh-CN.md#LowerFirst)
- [UpperFirst](https://github.com/duke-git/lancet/blob/main/docs/strutil_zh-CN.md#UpperFirst)
- [PadEnd](https://github.com/duke-git/lancet/blob/main/docs/strutil_zh-CN.md#PadEnd)
- [PadStart](https://github.com/duke-git/lancet/blob/main/docs/strutil_zh-CN.md#PadStart)
- [ReverseStr](https://github.com/duke-git/lancet/blob/main/docs/strutil_zh-CN.md#ReverseStr)
- [SnakeCase](https://github.com/duke-git/lancet/blob/main/docs/strutil_zh-CN.md#SnakeCase)
- [Wrap](https://github.com/duke-git/lancet/blob/main/docs/strutil_zh-CN.md#Wrap)
- [Unwrap](https://github.com/duke-git/lancet/blob/main/docs/strutil_zh-CN.md#Unwrap)
-  
+-   [ConvertMapToQueryString](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#ConvertMapToQueryString)
+-   [EncodeUrl](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#EncodeUrl)
+-   [GetInternalIp](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#GetInternalIp)
+-   [GetIps](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#GetIps)
+-   [GetMacAddrs](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#GetMacAddrs)
+-   [GetPublicIpInfo](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#GetPublicIpInfo)
+-   [GetRequestPublicIp](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#GetRequestPublicIp)
+-   [IsPublicIP](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#IsPublicIP)
+-   [IsInternalIP](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#IsInternalIP)
+-   [HttpGet](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#HttpGet)
+-   [HttpDelete](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#HttpDelete)
+-   [HttpPost](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#HttpPost)
+-   [HttpPut](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#HttpPut)
+-   [HttpPatch](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#HttpPatch)
+-   [ParseHttpResponse](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#ParseHttpResponse)
+-   [UploadFile](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#UploadFile)
+-   [DownloadFile](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#DownloadFile)
+-   [IsPingConnected](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#IsPingConnected)
+-   [IsTelnetConnected](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#IsTelnetConnected)

-### system包含os, runtime, shell command相关函数。
+### 10. random 随机数生成器包，可以生成随机[]bytes, int, string。

 ```go
-import "github.com/duke-git/lancet/v2/system"
+import "github.com/duke-git/lancet/random"
 ```

 #### 函数列表:
- [IsWindows](https://github.com/duke-git/lancet/blob/main/docs/system_zh-CN.md#IsWindows)
- [IsLinux](https://github.com/duke-git/lancet/blob/main/docs/system_zh-CN.md#IsLinux)
- [IsMac](https://github.com/duke-git/lancet/blob/main/docs/system_zh-CN.md#IsMac)
- [GetOsEnv](https://github.com/duke-git/lancet/blob/main/docs/system_zh-CN.md#GetOsEnv)
- [SetOsEnv](https://github.com/duke-git/lancet/blob/main/docs/system_zh-CN.md#SetOsEnv)
- [RemoveOsEnv](https://github.com/duke-git/lancet/blob/main/docs/system_zh-CN.md#RemoveOsEnv)
- [CompareOsEnv](https://github.com/duke-git/lancet/blob/main/docs/system_zh-CN.md#CompareOsEnv)
- [ExecCommand](https://github.com/duke-git/lancet/blob/main/docs/system_zh-CN.md#ExecCommand)

-### validator验证器包，包含常用字符串格式验证函数。
+-   [RandBytes](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandBytes)
+-   [RandInt](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandInt)
+-   [RandString](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandString)
+-   [RandUpper](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandUpper)
+-   [RandLower](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandLower)
+-   [RandNumeral](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandNumeral)
+-   [RandNumeralOrLetter](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandNumeralOrLetter)
+-   [UUIdV4](https://github.com/duke-git/lancet/blob/v1/docs/random.md#UUIdV4)
+
+### 11. retry 重试执行函数直到函数运行成功或被 context cancel。

 ```go
-import "github.com/duke-git/lancet/v2/validator"
+import "github.com/duke-git/lancet/retry"
 ```
+
 #### 函数列表:

- [ContainChinese](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#ContainChinese)
- [ContainLetter](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#ContainLetter)
- [ContainLower](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#ContainLower)
- [ContainUpper](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#ContainUpper)
- [IsAlpha](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsAlpha)
- [IsAllUpper](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsAllUpper)
- [IsAllLower](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsAllLower)
- [IsBase64](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsBase64)
- [IsChineseMobile](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsChineseMobile)
- [IsChineseIdNum](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsChineseIdNum)
- [IsChinesePhone](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsChinesePhone)
- [IsCreditCard](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsCreditCard)
- [IsDns](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsDns)
- [IsEmail](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsEmail)
- [IsEmptyString](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsEmptyString)
- [IsFloatStr](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsFloatStr)
- [IsNumberStr](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsNumberStr)
- [IsJSON](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsJSON)
- [IsRegexMatch](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsRegexMatch)
- [IsIntStr](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsIntStr)
- [IsIp](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsIp)
- [IsIpV4](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsIpV4)
- [IsIpV6](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsIpV6)
- [IsStrongPassword](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsStrongPassword)
- [IsUrl](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsUrl)
- [IsWeakPassword](https://github.com/duke-git/lancet/blob/main/docs/validator_zh-CN.md#IsWeakPassword)
+-   [Context](https://github.com/duke-git/lancet/blob/v1/docs/retry_zh-CN.md#Context)
+-   [Retry](https://github.com/duke-git/lancet/blob/v1/docs/retry_zh-CN.md#Retry)
+-   [RetryFunc](https://github.com/duke-git/lancet/blob/v1/docs/retry_zh-CN.md#RetryFunc)
+-   [RetryDuration](https://github.com/duke-git/lancet/blob/v1/docs/retry_zh-CN.md#RetryDuration)
+-   [RetryTimes](https://github.com/duke-git/lancet/blob/v1/docs/retry_zh-CN.md#RetryTimes)

-validator.md#IsWeakPassword)
-### xerror包实现一些错误处理函数
+### 12. slice 包包含操作切片的方法集合。

 ```go
-import "github.com/duke-git/lancet/v2/xerror"
+import "github.com/duke-git/lancet/slice"
 ```
+
 #### 函数列表:
- [Unwrap](https://github.com/duke-git/lancet/blob/main/docs/xerror_zh-CN.md#Unwrap)
+
+-   [AppendIfAbsent](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#AppendIfAbsent)
+-   [Contain](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Contain)
+-   [ContainSubSlice](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#ContainSubSlice)
+-   [Chunk](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Chunk)
+-   [Compact](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Compact)
+-   [Concat](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Concat)
+-   [Count](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Count)
+-   [Difference](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Difference)
+-   [DifferenceBy](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#DifferenceBy)
+-   [DeleteByIndex](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#DeleteByIndex)
+-   [Drop](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Drop)
+-   [Every](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Every)
+-   [Equal](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Equal)
+-   [EqualWith](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#EqualWith)
+-   [Filter](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Filter)
+-   [Find](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Find)
+-   [FindLast](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#FindLast)
+-   [FlattenDeep](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#FlattenDeep)
+-   [ForEach](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#ForEach)
+-   [GroupBy](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#GroupBy)
+-   [IntSlice](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#IntSlice)
+-   [IndexOf](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#IndexOf)
+-   [LastIndexOf](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#LastIndexOf)
+-   [InterfaceSlice](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#InterfaceSlice)
+-   [Intersection](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Intersection)
+-   [InsertByIndex](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#InsertByIndex)
+-   [Map](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Map)
+-   [ReverseSlice](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#ReverseSlice)
+-   [Reduce](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Reduce)
+-   [Shuffle](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Shuffle)
+-   [SortByField](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#SortByField)
+-   [Some](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Some)
+-   [StringSlice](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#StringSlice)
+-   [ToSlice](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#ToSlice)
+-   [ToSlicePointer](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#ToSlice)
+-   [Unique](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Unique)
+-   [UniqueBy](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#UniqueBy)
+-   [Union](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Union)
+-   [UpdateByIndex](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#UpdateByIndex)
+-   [Without](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Without)
+
+### 13. strutil 包含处理字符串的相关函数。
+
+```go
+import "github.com/duke-git/lancet/strutil"
+```
+
+#### 函数列表:
+
+-   [After](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#After)
+-   [AfterLast](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#AfterLast)
+-   [Before](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Before)
+-   [BeforeLast](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#BeforeLast)
+-   [CamelCase](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#CamelCase)
+-   [Capitalize](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Capitalize)
+-   [ContainsAll](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#ContainsAll)
+-   [ContainsAny](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#ContainsAny)
+-   [IsString](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#IsString)
+-   [KebabCase](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#KebabCase)
+-   [UpperKebabCase](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#UpperKebabCase)
+-   [LowerFirst](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#LowerFirst)
+-   [UpperFirst](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#UpperFirst)
+-   [Pad](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Pad)
+-   [PadEnd](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#PadEnd)
+-   [PadStart](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#PadStart)
+-   [Reverse](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Reverse)
+-   [SnakeCase](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#SnakeCase)
+-   [UpperSnakeCase](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#UpperSnakeCase)
+-   [SplitEx](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#SplitEx)
+-   [Wrap](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Wrap)
+-   [Unwrap](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Unwrap)
+-   [SplitWords](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#SplitWords)
+-   [WordCount](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#WordCount)
+-   [RemoveNonPrintable](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#RemoveNonPrintable)
+-   [StringToBytes](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#StringToBytes)
+-   [BytesToString](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#BytesToString)
+-   [IsBlank](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#IsBlank)
+-   [HasPrefixAny](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#HasPrefixAny)
+-   [HasSuffixAny](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#HasSuffixAny)
+-   [IndexOffset](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#IndexOffset)
+-   [ReplaceWithMap](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#ReplaceWithMap)
+-   [Trim](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Trim)
+-   [SplitAndTrim](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#SplitAndTrim)
+-   [HideString](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#HideString)
+
+### 14. system 包含 os, runtime, shell command 相关函数。
+
+```go
+import "github.com/duke-git/lancet/system"
+```
+
+#### 函数列表:
+
+-   [IsWindows](https://github.com/duke-git/lancet/blob/v1/docs/system_zh-CN.md#IsWindows)
+-   [IsLinux](https://github.com/duke-git/lancet/blob/v1/docs/system_zh-CN.md#IsLinux)
+-   [IsMac](https://github.com/duke-git/lancet/blob/v1/docs/system_zh-CN.md#IsMac)
+-   [GetOsEnv](https://github.com/duke-git/lancet/blob/v1/docs/system_zh-CN.md#GetOsEnv)
+-   [SetOsEnv](https://github.com/duke-git/lancet/blob/v1/docs/system_zh-CN.md#SetOsEnv)
+-   [RemoveOsEnv](https://github.com/duke-git/lancet/blob/v1/docs/system_zh-CN.md#RemoveOsEnv)
+-   [CompareOsEnv](https://github.com/duke-git/lancet/blob/v1/docs/system_zh-CN.md#CompareOsEnv)
+-   [ExecCommand](https://github.com/duke-git/lancet/blob/v1/docs/system_zh-CN.md#ExecCommand)
+-   [GetOsBits](https://github.com/duke-git/lancet/blob/v1/docs/system_zh-CN.md#GetOsBits)
+
+### 15. validator 验证器包，包含常用字符串格式验证函数。
+
+```go
+import "github.com/duke-git/lancet/validator"
+```
+
+#### 函数列表:
+
+-   [ContainChinese](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#ContainChinese)
+-   [ContainLetter](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#ContainLetter)
+-   [ContainLower](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#ContainLower)
+-   [ContainUpper](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#ContainUpper)
+-   [IsAlpha](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsAlpha)
+-   [IsAllUpper](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsAllUpper)
+-   [IsAllLower](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsAllLower)
+-   [IsBase64](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsBase64)
+-   [IsChineseMobile](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsChineseMobile)
+-   [IsChineseIdNum](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsChineseIdNum)
+-   [IsChinesePhone](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsChinesePhone)
+-   [IsCreditCard](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsCreditCard)
+-   [IsDns](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsDns)
+-   [IsEmail](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsEmail)
+-   [IsEmptyString](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsEmptyString)
+-   [IsInt](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsInt)
+-   [IsFloat](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsFloat)
+-   [IsNumber](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsNumber)
+-   [IsIntStr](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsIntStr)
+-   [IsFloatStr](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsFloatStr)
+-   [IsNumberStr](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsNumberStr)
+-   [IsJSON](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsJSON)
+-   [IsRegexMatch](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsRegexMatch)
+-   [IsIp](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsIp)
+-   [IsIpV4](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsIpV4)
+-   [IsIpV6](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsIpV6)
+-   [IsStrongPassword](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsStrongPassword)
+-   [IsUrl](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsUrl)
+-   [IsWeakPassword](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsWeakPassword)
+-   [IsZeroValue](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsZeroValue)
+-   [IsGBK](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsGBK)
+-   [IsASCII](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsASCII)
+-   [IsPrintable](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsPrintable)

 ## 如何贡献代码

-非常感激任何的代码提交以使lancet的功能越来越强大。创建pull request时请遵守以下规则。
+非常感激任何的代码提交以使 lancet 的功能越来越强大。创建 pull request 时请遵守以下规则。

-1. Fork lancet仓库。
+1. Fork lancet 仓库。
 2. 创建自己的特性分支。
 3. 提交变更。
-4. Push分支。
-5. 创建新的pull request。
+4. Push 分支。
+5. 创建新的 pull request。
--- a/algorithm/lru_cache.go
+++ b/algorithm/lru_cache.go
@@ -1,102 +0,0 @@
-package algorithm
-
-type lruNode[K comparable, V any] struct {
-	key   K
-	value V
-	pre   *lruNode[K, V]
-	next  *lruNode[K, V]
-}
-
-// newLruNode return a lruNode pointer
-func newLruNode[K comparable, V any](key K, value V) *lruNode[K, V] {
-	return &lruNode[K, V]{
-		key:   key,
-		value: value,
-		pre:   nil,
-		next:  nil,
-	}
-}
-
-// LRUCache lru cache (thread unsafe)
-type LRUCache[K comparable, V any] struct {
-	cache    map[K]*lruNode[K, V]
-	head     *lruNode[K, V]
-	tail     *lruNode[K, V]
-	capacity int
-	length   int
-}
-
-// NewLRUCache return a LRUCache pointer
-func NewLRUCache[K comparable, V any](capacity int) *LRUCache[K, V] {
-	return &LRUCache[K, V]{
-		cache:    make(map[K]*lruNode[K, V], capacity),
-		head:     nil,
-		tail:     nil,
-		capacity: capacity,
-		length:   0,
-	}
-}
-
-// Get value of key from lru cache
-func (l *LRUCache[K, V]) Get(key K) (V, bool) {
-	var value V
-
-	node, ok := l.cache[key]
-	if ok {
-		l.moveToHead(node)
-		return node.value, true
-	}
-
-	return value, false
-}
-
-// Put value of key into lru cache
-func (l *LRUCache[K, V]) Put(key K, value V) {
-	node, ok := l.cache[key]
-	if !ok {
-		newNode := newLruNode(key, value)
-		l.cache[key] = newNode
-		l.addNode(newNode)
-
-		if len(l.cache) > l.capacity {
-			oldKey := l.deleteNode(l.head)
-			delete(l.cache, oldKey)
-		}
-	} else {
-		node.value = value
-		l.moveToHead(node)
-	}
-	l.length = len(l.cache)
-}
-
-func (l *LRUCache[K, V]) addNode(node *lruNode[K, V]) {
-	if l.tail != nil {
-		l.tail.next = node
-		node.pre = l.tail
-		node.next = nil
-	}
-	l.tail = node
-	if l.head == nil {
-		l.head = node
-	}
-}
-
-func (l *LRUCache[K, V]) deleteNode(node *lruNode[K, V]) K {
-	if node == l.tail {
-		l.tail = l.tail.pre
-	} else if node == l.head {
-		l.head = l.head.next
-	} else {
-		node.pre.next = node.next
-		node.next.pre = node.pre
-	}
-	return node.key
-}
-
-func (l *LRUCache[K, V]) moveToHead(node *lruNode[K, V]) {
-	if l.tail == node {
-		return
-	}
-	l.deleteNode(node)
-	l.addNode(node)
-}
--- a/algorithm/lru_cache_test.go
+++ b/algorithm/lru_cache_test.go
@@ -1,36 +0,0 @@
-package algorithm
-
-import (
-	"testing"
-
-	"github.com/duke-git/lancet/v2/internal"
-)
-
-func TestLRUCache(t *testing.T) {
-	asssert := internal.NewAssert(t, "TestLRUCache")
-
-	cache := NewLRUCache[int, int](2)
-
-	cache.Put(1, 1)
-	cache.Put(2, 2)
-
-	_, ok := cache.Get(0)
-	asssert.Equal(false, ok)
-
-	v, ok := cache.Get(1)
-	asssert.Equal(true, ok)
-	asssert.Equal(1, v)
-
-	v, ok = cache.Get(2)
-	asssert.Equal(true, ok)
-	asssert.Equal(2, v)
-
-	cache.Put(3, 3)
-	v, ok = cache.Get(1)
-	asssert.Equal(false, ok)
-	asssert.NotEqual(1, v)
-
-	v, ok = cache.Get(3)
-	asssert.Equal(true, ok)
-	asssert.Equal(3, v)
-}
--- a/algorithm/search.go
+++ b/algorithm/search.go
@@ -1,63 +0,0 @@
-// Copyright 2021 dudaodong@gmail.com. All rights reserved.
-// Use of this source code is governed by MIT license
-
-// Package algorithm contain some basic algorithm functions. eg. sort, search, list, linklist, stack, queue, tree, graph. TODO
-package algorithm
-
-import "github.com/duke-git/lancet/v2/lancetconstraints"
-
-// Search algorithms see https://github.com/TheAlgorithms/Go/tree/master/search
-
-// LinearSearch Simple linear search algorithm that iterates over all elements of an slice
-// If a target is found, the index of the target is returned. Else the function return -1
-func LinearSearch[T any](slice []T, target T, comparator lancetconstraints.Comparator) int {
-	for i, v := range slice {
-		if comparator.Compare(v, target) == 0 {
-			return i
-		}
-	}
-	return -1
-}
-
-// BinarySearch search for target within a sorted slice, recursive call itself.
-// If a target is found, the index of the target is returned. Else the function return -1
-func BinarySearch[T any](sortedSlice []T, target T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) int {
-	if highIndex < lowIndex || len(sortedSlice) == 0 {
-		return -1
-	}
-
-	midIndex := int(lowIndex + (highIndex-lowIndex)/2)
-	isMidValGreatTarget := comparator.Compare(sortedSlice[midIndex], target) == 1
-	isMidValLessTarget := comparator.Compare(sortedSlice[midIndex], target) == -1
-
-	if isMidValGreatTarget {
-		return BinarySearch(sortedSlice, target, lowIndex, midIndex-1, comparator)
-	} else if isMidValLessTarget {
-		return BinarySearch(sortedSlice, target, midIndex+1, highIndex, comparator)
-	}
-
-	return midIndex
-}
-
-// BinaryIterativeSearch search for target within a sorted slice.
-// If a target is found, the index of the target is returned. Else the function return -1
-func BinaryIterativeSearch[T any](sortedSlice []T, target T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) int {
-	startIndex := lowIndex
-	endIndex := highIndex
-
-	var midIndex int
-	for startIndex <= endIndex {
-		midIndex = int(startIndex + (endIndex-startIndex)/2)
-		isMidValGreatTarget := comparator.Compare(sortedSlice[midIndex], target) == 1
-		isMidValLessTarget := comparator.Compare(sortedSlice[midIndex], target) == -1
-
-		if isMidValGreatTarget {
-			endIndex = midIndex - 1
-		} else if isMidValLessTarget {
-			startIndex = midIndex + 1
-		} else {
-			return midIndex
-		}
-	}
-	return -1
-}
--- a/algorithm/search_test.go
+++ b/algorithm/search_test.go
@@ -1,33 +0,0 @@
-package algorithm
-
-import (
-	"testing"
-
-	"github.com/duke-git/lancet/v2/internal"
-)
-
-var sortedNumbers = []int{1, 2, 3, 4, 5, 6, 7, 8}
-
-func TestLinearSearch(t *testing.T) {
-	asssert := internal.NewAssert(t, "TestLinearSearch")
-
-	comparator := &intComparator{}
-	asssert.Equal(4, LinearSearch(sortedNumbers, 5, comparator))
-	asssert.Equal(-1, LinearSearch(sortedNumbers, 9, comparator))
-}
-
-func TestBinarySearch(t *testing.T) {
-	asssert := internal.NewAssert(t, "TestBinarySearch")
-
-	comparator := &intComparator{}
-	asssert.Equal(4, BinarySearch(sortedNumbers, 5, 0, len(sortedNumbers)-1, comparator))
-	asssert.Equal(-1, BinarySearch(sortedNumbers, 9, 0, len(sortedNumbers)-1, comparator))
-}
-
-func TestBinaryIterativeSearch(t *testing.T) {
-	asssert := internal.NewAssert(t, "TestBinaryIterativeSearch")
-
-	comparator := &intComparator{}
-	asssert.Equal(4, BinaryIterativeSearch(sortedNumbers, 5, 0, len(sortedNumbers)-1, comparator))
-	asssert.Equal(-1, BinaryIterativeSearch(sortedNumbers, 9, 0, len(sortedNumbers)-1, comparator))
-}
--- a/algorithm/sorter.go
+++ b/algorithm/sorter.go
@@ -1,208 +0,0 @@
-// Copyright 2021 dudaodong@gmail.com. All rights reserved.
-// Use of this source code is governed by MIT license
-
-// Package algorithm contain some basic algorithm functions. eg. sort, search
-package algorithm
-
-import "github.com/duke-git/lancet/v2/lancetconstraints"
-
-// BubbleSort use bubble to sort slice.
-func BubbleSort[T any](slice []T, comparator lancetconstraints.Comparator) []T {
-	for i := 0; i < len(slice); i++ {
-		for j := 0; j < len(slice)-1-i; j++ {
-			isCurrGreatThanNext := comparator.Compare(slice[j], slice[j+1]) == 1
-			if isCurrGreatThanNext {
-				swap(slice, j, j+1)
-			}
-		}
-	}
-	return slice
-}
-
-// InsertionSort use insertion to sort slice.
-func InsertionSort[T any](slice []T, comparator lancetconstraints.Comparator) []T {
-	size := len(slice)
-	if size <= 1 {
-		return slice
-	}
-
-	for i := 1; i < size; i++ {
-		currentItem := slice[i]
-		preIndex := i - 1
-		preItem := slice[preIndex]
-
-		isPreLessThanCurrent := comparator.Compare(preItem, currentItem) == -1
-		for preIndex >= 0 && isPreLessThanCurrent {
-			slice[preIndex+1] = slice[preIndex]
-			preIndex--
-		}
-
-		slice[preIndex+1] = preItem
-	}
-
-	return slice
-}
-
-// SelectionSort use selection to sort slice.
-func SelectionSort[T any](slice []T, comparator lancetconstraints.Comparator) []T {
-	for i := 0; i < len(slice); i++ {
-		min := i
-
-		for j := i + 1; j < len(slice); j++ {
-			if comparator.Compare(slice[j], slice[min]) == -1 {
-				min = j
-			}
-		}
-		swap(slice, i, min)
-	}
-	return slice
-}
-
-// ShellSort shell sort slice.
-func ShellSort[T any](slice []T, comparator lancetconstraints.Comparator) []T {
-	size := len(slice)
-	if size <= 1 {
-		return slice
-	}
-
-	gap := 1
-	for gap < size/3 {
-		gap = 3*gap + 1
-	}
-
-	for gap >= 1 {
-		for i := gap; i < size; i++ {
-			for j := i; j >= gap && comparator.Compare(slice[j], slice[j-gap]) == -1; j -= gap {
-				swap(slice, j, j-gap)
-			}
-		}
-		gap /= 3
-	}
-
-	return slice
-}
-
-// QuickSort quick sorting for slice, lowIndex is 0 and highIndex is len(slice)-1
-func QuickSort[T any](slice []T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) []T {
-	if lowIndex < highIndex {
-		p := partition(slice, lowIndex, highIndex, comparator)
-		QuickSort(slice, lowIndex, p-1, comparator)
-		QuickSort(slice, p+1, highIndex, comparator)
-	}
-
-	return slice
-}
-
-// partition split slice into two parts
-func partition[T any](slice []T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) int {
-	p := slice[highIndex]
-	i := lowIndex
-	for j := lowIndex; j < highIndex; j++ {
-		if comparator.Compare(slice[j], p) == -1 { //slice[j] < p
-			swap(slice, i, j)
-			i++
-		}
-	}
-
-	swap(slice, i, highIndex)
-
-	return i
-}
-
-// HeapSort use heap to sort slice
-func HeapSort[T any](slice []T, comparator lancetconstraints.Comparator) []T {
-	size := len(slice)
-
-	for i := size/2 - 1; i >= 0; i-- {
-		sift(slice, i, size-1, comparator)
-	}
-	for j := size - 1; j > 0; j-- {
-		swap(slice, 0, j)
-		sift(slice, 0, j-1, comparator)
-	}
-
-	return slice
-}
-
-func sift[T any](slice []T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) {
-	i := lowIndex
-	j := 2*i + 1
-
-	temp := slice[i]
-	for j <= highIndex {
-		if j < highIndex && comparator.Compare(slice[j], slice[j+1]) == -1 { //slice[j] < slice[j+1]
-			j++
-		}
-		if comparator.Compare(temp, slice[j]) == -1 { //tmp < slice[j]
-			slice[i] = slice[j]
-			i = j
-			j = 2*i + 1
-		} else {
-			break
-		}
-	}
-	slice[i] = temp
-}
-
-// MergeSort merge sorting for slice
-func MergeSort[T any](slice []T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) []T {
-	if lowIndex < highIndex {
-		mid := (lowIndex + highIndex) / 2
-		MergeSort(slice, lowIndex, mid, comparator)
-		MergeSort(slice, mid+1, highIndex, comparator)
-		merge(slice, lowIndex, mid, highIndex, comparator)
-	}
-
-	return slice
-}
-
-func merge[T any](slice []T, lowIndex, midIndex, highIndex int, comparator lancetconstraints.Comparator) {
-	i := lowIndex
-	j := midIndex + 1
-	temp := []T{}
-
-	for i <= midIndex && j <= highIndex {
-		//slice[i] < slice[j]
-		if comparator.Compare(slice[i], slice[j]) == -1 {
-			temp = append(temp, slice[i])
-			i++
-		} else {
-			temp = append(temp, slice[j])
-			j++
-		}
-	}
-
-	if i <= midIndex {
-		temp = append(temp, slice[i:midIndex+1]...)
-	} else {
-		temp = append(temp, slice[j:highIndex+1]...)
-	}
-
-	for k := 0; k < len(temp); k++ {
-		slice[lowIndex+k] = temp[k]
-	}
-}
-
-// CountSort use count sorting for slice
-func CountSort[T any](slice []T, comparator lancetconstraints.Comparator) []T {
-	size := len(slice)
-	out := make([]T, size)
-
-	for i := 0; i < size; i++ {
-		count := 0
-		for j := 0; j < size; j++ {
-			//slice[i] > slice[j]
-			if comparator.Compare(slice[i], slice[j]) == 1 {
-				count++
-			}
-		}
-		out[count] = slice[i]
-	}
-
-	return out
-}
-
-// swap two slice value at index i and j
-func swap[T any](slice []T, i, j int) {
-	slice[i], slice[j] = slice[j], slice[i]
-}
--- a/algorithm/sorter_test.go
+++ b/algorithm/sorter_test.go
@@ -1,177 +0,0 @@
-package algorithm
-
-import (
-	"fmt"
-	"testing"
-
-	"github.com/duke-git/lancet/v2/internal"
-)
-
-// People test mock data
-type people struct {
-	Name string
-	Age  int
-}
-
-// PeopleAageComparator sort people slice by age field
-type peopleAgeComparator struct{}
-
-// Compare implements github.com/duke-git/lancet/v2/lancetconstraints/constraints.go/Comparator
-func (pc *peopleAgeComparator) Compare(v1 any, v2 any) int {
-	p1, _ := v1.(people)
-	p2, _ := v2.(people)
-
-	//ascending order
-	if p1.Age < p2.Age {
-		return -1
-	} else if p1.Age > p2.Age {
-		return 1
-	}
-	return 0
-
-	//decending order
-	// if p1.Age > p2.Age {
-	// 	return -1
-	// } else if p1.Age < p2.Age {
-	// 	return 1
-	// }
-}
-
-var peoples = []people{
-	{Name: "a", Age: 20},
-	{Name: "b", Age: 10},
-	{Name: "c", Age: 17},
-	{Name: "d", Age: 8},
-	{Name: "e", Age: 28},
-}
-
-type intComparator struct{}
-
-func (c *intComparator) Compare(v1 any, v2 any) int {
-	val1, _ := v1.(int)
-	val2, _ := v2.(int)
-
-	//ascending order
-	if val1 < val2 {
-		return -1
-	} else if val1 > val2 {
-		return 1
-	}
-	return 0
-}
-
-var intSlice = []int{2, 1, 5, 3, 6, 4}
-
-func TestBubbleSortForStructSlice(t *testing.T) {
-	asssert := internal.NewAssert(t, "TestBubbleSortForStructSlice")
-
-	comparator := &peopleAgeComparator{}
-	sortedPeopleByAge := BubbleSort(peoples, comparator)
-	t.Log(sortedPeopleByAge)
-
-	expected := "[{d 8} {b 10} {c 17} {a 20} {e 28}]"
-	actual := fmt.Sprintf("%v", sortedPeopleByAge)
-
-	asssert.Equal(expected, actual)
-}
-
-func TestBubbleSortForIntSlice(t *testing.T) {
-	asssert := internal.NewAssert(t, "TestBubbleSortForIntSlice")
-
-	comparator := &intComparator{}
-	sortedInt := BubbleSort(intSlice, comparator)
-	expected := []int{1, 2, 3, 4, 5, 6}
-
-	asssert.Equal(expected, sortedInt)
-}
-
-func TestInsertionSort(t *testing.T) {
-	asssert := internal.NewAssert(t, "TestInsertionSort")
-
-	comparator := &peopleAgeComparator{}
-	sortedPeopleByAge := SelectionSort(peoples, comparator)
-	t.Log(sortedPeopleByAge)
-
-	expected := "[{d 8} {b 10} {c 17} {a 20} {e 28}]"
-	actual := fmt.Sprintf("%v", sortedPeopleByAge)
-
-	asssert.Equal(expected, actual)
-}
-
-func TestSelectionSort(t *testing.T) {
-	asssert := internal.NewAssert(t, "TestSelectionSort")
-
-	comparator := &peopleAgeComparator{}
-	sortedPeopleByAge := SelectionSort(peoples, comparator)
-	t.Log(sortedPeopleByAge)
-
-	expected := "[{d 8} {b 10} {c 17} {a 20} {e 28}]"
-	actual := fmt.Sprintf("%v", sortedPeopleByAge)
-
-	asssert.Equal(expected, actual)
-}
-
-func TestShellSort(t *testing.T) {
-	asssert := internal.NewAssert(t, "TestShellSort")
-
-	comparator := &peopleAgeComparator{}
-	sortedPeopleByAge := ShellSort(peoples, comparator)
-	t.Log(sortedPeopleByAge)
-
-	expected := "[{d 8} {b 10} {c 17} {a 20} {e 28}]"
-	actual := fmt.Sprintf("%v", sortedPeopleByAge)
-
-	asssert.Equal(expected, actual)
-}
-
-func TestQuickSort(t *testing.T) {
-	asssert := internal.NewAssert(t, "TestQuickSort")
-
-	comparator := &peopleAgeComparator{}
-	sortedPeopleByAge := QuickSort(peoples, 0, len(peoples)-1, comparator)
-	t.Log(sortedPeopleByAge)
-
-	expected := "[{d 8} {b 10} {c 17} {a 20} {e 28}]"
-	actual := fmt.Sprintf("%v", sortedPeopleByAge)
-
-	asssert.Equal(expected, actual)
-}
-
-func TestHeapSort(t *testing.T) {
-	asssert := internal.NewAssert(t, "TestHeapSort")
-
-	comparator := &peopleAgeComparator{}
-	sortedPeopleByAge := HeapSort(peoples, comparator)
-	t.Log(sortedPeopleByAge)
-
-	expected := "[{d 8} {b 10} {c 17} {a 20} {e 28}]"
-	actual := fmt.Sprintf("%v", sortedPeopleByAge)
-
-	asssert.Equal(expected, actual)
-}
-
-func TestMergeSort(t *testing.T) {
-	asssert := internal.NewAssert(t, "TestMergeSort")
-
-	comparator := &peopleAgeComparator{}
-	sortedPeopleByAge := MergeSort(peoples, 0, len(peoples)-1, comparator)
-	t.Log(sortedPeopleByAge)
-
-	expected := "[{d 8} {b 10} {c 17} {a 20} {e 28}]"
-	actual := fmt.Sprintf("%v", sortedPeopleByAge)
-
-	asssert.Equal(expected, actual)
-}
-
-func TestCountSort(t *testing.T) {
-	asssert := internal.NewAssert(t, "TestCountSort")
-
-	comparator := &peopleAgeComparator{}
-	sortedPeopleByAge := CountSort(peoples, comparator)
-	t.Log(sortedPeopleByAge)
-
-	expected := "[{d 8} {b 10} {c 17} {a 20} {e 28}]"
-	actual := fmt.Sprintf("%v", sortedPeopleByAge)
-
-	asssert.Equal(expected, actual)
-}
--- a/compare/compare.go
+++ b/compare/compare.go
@@ -0,0 +1,58 @@
+// Copyright 2023 dudaodong@gmail.com. All rights resulterved.
+// Use of this source code is governed by MIT license
+
+// Package compare provides a lightweight comparison function on interface{} type.
+// reference: https://github.com/stretchr/testify
+package compare
+
+import (
+	"reflect"
+	"time"
+
+	"github.com/duke-git/lancet/convertor"
+)
+
+// operator type
+const (
+	equal          = "eq"
+	lessThan       = "lt"
+	greaterThan    = "gt"
+	lessOrEqual    = "le"
+	greaterOrEqual = "ge"
+)
+
+var (
+	timeType  = reflect.TypeOf(time.Time{})
+	bytesType = reflect.TypeOf([]byte{})
+)
+
+// Equal checks if two values are equal or not. (check both type and value)
+func Equal(left, right interface{}) bool {
+	return compareValue(equal, left, right)
+}
+
+// EqualValue checks if two values are equal or not. (check value only)
+func EqualValue(left, right interface{}) bool {
+	ls, rs := convertor.ToString(left), convertor.ToString(right)
+	return ls == rs
+}
+
+// LessThan checks if value `left` less than value `right`.
+func LessThan(left, right interface{}) bool {
+	return compareValue(lessThan, left, right)
+}
+
+// GreaterThan checks if value `left` greater than value `right`.
+func GreaterThan(left, right interface{}) bool {
+	return compareValue(greaterThan, left, right)
+}
+
+// LessOrEqual checks if value `left` less than or equal to value `right`.
+func LessOrEqual(left, right interface{}) bool {
+	return compareValue(lessOrEqual, left, right)
+}
+
+// GreaterOrEqual checks if value `left` greater than or equal to value `right`.
+func GreaterOrEqual(left, right interface{}) bool {
+	return compareValue(greaterOrEqual, left, right)
+}
--- a/compare/compare_example_test.go
+++ b/compare/compare_example_test.go
@@ -0,0 +1,170 @@
+package compare
+
+import (
+	"fmt"
+	"time"
+)
+
+func ExampleEqual() {
+	result1 := Equal(1, 1)
+	result2 := Equal("1", "1")
+	result3 := Equal([]int{1, 2, 3}, []int{1, 2, 3})
+	result4 := Equal(map[int]string{1: "a", 2: "b"}, map[int]string{1: "a", 2: "b"})
+
+	result5 := Equal(1, "1")
+	result6 := Equal(1, int64(1))
+	result7 := Equal([]int{1, 2}, []int{1, 2, 3})
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	fmt.Println(result6)
+	fmt.Println(result7)
+
+	// Output:
+	// true
+	// true
+	// true
+	// true
+	// false
+	// false
+	// false
+}
+
+func ExampleEqualValue() {
+	result1 := EqualValue(1, 1)
+	result2 := EqualValue(int(1), int64(1))
+	result3 := EqualValue(1, "1")
+	result4 := EqualValue(1, "2")
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+
+	// Output:
+	// true
+	// true
+	// true
+	// false
+}
+
+func ExampleLessThan() {
+	result1 := LessThan(1, 2)
+	result2 := LessThan(1.1, 2.2)
+	result3 := LessThan("a", "b")
+
+	time1 := time.Now()
+	time2 := time1.Add(time.Second)
+	result4 := LessThan(time1, time2)
+
+	result5 := LessThan(2, 1)
+	result6 := LessThan(1, int64(2))
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	fmt.Println(result6)
+
+	// Output:
+	// true
+	// true
+	// true
+	// true
+	// false
+	// false
+}
+
+func ExampleGreaterThan() {
+	result1 := GreaterThan(2, 1)
+	result2 := GreaterThan(2.2, 1.1)
+	result3 := GreaterThan("b", "a")
+
+	time1 := time.Now()
+	time2 := time1.Add(time.Second)
+	result4 := GreaterThan(time2, time1)
+
+	result5 := GreaterThan(1, 2)
+	result6 := GreaterThan(int64(2), 1)
+	result7 := GreaterThan("b", "c")
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	fmt.Println(result6)
+	fmt.Println(result7)
+
+	// Output:
+	// true
+	// true
+	// true
+	// true
+	// false
+	// false
+	// false
+}
+
+func ExampleLessOrEqual() {
+	result1 := LessOrEqual(1, 1)
+	result2 := LessOrEqual(1.1, 2.2)
+	result3 := LessOrEqual("a", "b")
+
+	time1 := time.Now()
+	time2 := time1.Add(time.Second)
+	result4 := LessOrEqual(time1, time2)
+
+	result5 := LessOrEqual(2, 1)
+	result6 := LessOrEqual(1, int64(2))
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	fmt.Println(result6)
+
+	// Output:
+	// true
+	// true
+	// true
+	// true
+	// false
+	// false
+}
+
+func ExampleGreaterOrEqual() {
+	result1 := GreaterOrEqual(1, 1)
+	result2 := GreaterOrEqual(2.2, 1.1)
+	result3 := GreaterOrEqual("b", "b")
+
+	time1 := time.Now()
+	time2 := time1.Add(time.Second)
+	result4 := GreaterOrEqual(time2, time1)
+
+	result5 := GreaterOrEqual(1, 2)
+	result6 := GreaterOrEqual(int64(2), 1)
+	result7 := GreaterOrEqual("b", "c")
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	fmt.Println(result6)
+	fmt.Println(result7)
+
+	// Output:
+	// true
+	// true
+	// true
+	// true
+	// false
+	// false
+	// false
+}
--- a/compare/compare_internal.go
+++ b/compare/compare_internal.go
@@ -0,0 +1,323 @@
+package compare
+
+import (
+	"bytes"
+	"encoding/json"
+	"reflect"
+	"time"
+
+	"github.com/duke-git/lancet/convertor"
+)
+
+func compareValue(operator string, left, right interface{}) bool {
+	leftType, rightType := reflect.TypeOf(left), reflect.TypeOf(right)
+
+	if leftType.Kind() != rightType.Kind() {
+		return false
+	}
+
+	switch leftType.Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
+		reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64,
+		reflect.Float32, reflect.Float64, reflect.Bool, reflect.String:
+		return compareBasicValue(operator, left, right)
+
+	case reflect.Struct, reflect.Slice, reflect.Map:
+		return compareRefValue(operator, left, right, leftType.Kind())
+	}
+
+	return false
+}
+
+func compareRefValue(operator string, leftObj, rightObj interface{}, kind reflect.Kind) bool {
+	leftVal, rightVal := reflect.ValueOf(leftObj), reflect.ValueOf(rightObj)
+
+	switch kind {
+	case reflect.Struct:
+
+		// compare time
+		if leftVal.CanConvert(timeType) {
+			timeObj1, ok := leftObj.(time.Time)
+			if !ok {
+				timeObj1 = leftVal.Convert(timeType).Interface().(time.Time)
+			}
+
+			timeObj2, ok := rightObj.(time.Time)
+			if !ok {
+				timeObj2 = rightVal.Convert(timeType).Interface().(time.Time)
+			}
+
+			return compareBasicValue(operator, timeObj1.UnixNano(), timeObj2.UnixNano())
+		}
+
+		// for other struct type, only process equal operator
+		switch operator {
+		case equal:
+			return objectsAreEqualValues(leftObj, rightObj)
+		}
+
+	case reflect.Slice:
+		// compare []byte
+		if leftVal.CanConvert(bytesType) {
+			bytesObj1, ok := leftObj.([]byte)
+			if !ok {
+				bytesObj1 = leftVal.Convert(bytesType).Interface().([]byte)
+			}
+			bytesObj2, ok := rightObj.([]byte)
+			if !ok {
+				bytesObj2 = rightVal.Convert(bytesType).Interface().([]byte)
+			}
+
+			switch operator {
+			case equal:
+				if bytes.Compare(bytesObj1, bytesObj2) == 0 {
+					return true
+				}
+			case lessThan:
+				if bytes.Compare(bytesObj1, bytesObj2) == -1 {
+					return true
+				}
+			case greaterThan:
+				if bytes.Compare(bytesObj1, bytesObj2) == 1 {
+					return true
+				}
+			case lessOrEqual:
+				if bytes.Compare(bytesObj1, bytesObj2) <= 0 {
+					return true
+				}
+			case greaterOrEqual:
+				if bytes.Compare(bytesObj1, bytesObj2) >= 0 {
+					return true
+				}
+			}
+
+		}
+
+		// for other type slice, only process equal operator
+		switch operator {
+		case equal:
+			return reflect.DeepEqual(leftObj, rightObj)
+		}
+
+	case reflect.Map:
+		// only process equal operator
+		switch operator {
+		case equal:
+			return reflect.DeepEqual(leftObj, rightObj)
+		}
+	}
+
+	return false
+}
+
+func objectsAreEqualValues(expected, actual interface{}) bool {
+	if objectsAreEqual(expected, actual) {
+		return true
+	}
+
+	actualType := reflect.TypeOf(actual)
+	if actualType == nil {
+		return false
+	}
+	expectedValue := reflect.ValueOf(expected)
+	if expectedValue.IsValid() && expectedValue.Type().ConvertibleTo(actualType) {
+		// Attempt comparison after type conversion
+		return reflect.DeepEqual(expectedValue.Convert(actualType).Interface(), actual)
+	}
+
+	return false
+}
+
+func objectsAreEqual(expected, actual interface{}) bool {
+	if expected == nil || actual == nil {
+		return expected == actual
+	}
+
+	exp, ok := expected.([]byte)
+	if !ok {
+		return reflect.DeepEqual(expected, actual)
+	}
+
+	act, ok := actual.([]byte)
+	if !ok {
+		return false
+	}
+	if exp == nil || act == nil {
+		return exp == nil && act == nil
+	}
+	return bytes.Equal(exp, act)
+}
+
+// compareBasic compare basic value: integer, float, string, bool
+func compareBasicValue(operator string, leftValue, rightValue interface{}) bool {
+	if leftValue == nil && rightValue == nil && operator == equal {
+		return true
+	}
+
+	switch leftVal := leftValue.(type) {
+	case json.Number:
+		if left, err := leftVal.Float64(); err == nil {
+			switch rightVal := rightValue.(type) {
+			case json.Number:
+				if right, err := rightVal.Float64(); err == nil {
+					switch operator {
+					case equal:
+						if left == right {
+							return true
+						}
+					case lessThan:
+						if left < right {
+							return true
+						}
+					case greaterThan:
+						if left > right {
+							return true
+						}
+					case lessOrEqual:
+						if left <= right {
+							return true
+						}
+					case greaterOrEqual:
+						if left >= right {
+							return true
+						}
+					}
+
+				}
+
+			case float32, float64, int, uint, int8, uint8, int16, uint16, int32, uint32, int64, uint64:
+				right, err := convertor.ToFloat(rightValue)
+				if err != nil {
+					return false
+				}
+				switch operator {
+				case equal:
+					if left == right {
+						return true
+					}
+				case lessThan:
+					if left < right {
+						return true
+					}
+				case greaterThan:
+					if left > right {
+						return true
+					}
+				case lessOrEqual:
+					if left <= right {
+						return true
+					}
+				case greaterOrEqual:
+					if left >= right {
+						return true
+					}
+				}
+			}
+
+		}
+
+	case float32, float64, int, uint, int8, uint8, int16, uint16, int32, uint32, int64, uint64:
+		left, err := convertor.ToFloat(leftValue)
+		if err != nil {
+			return false
+		}
+		switch rightVal := rightValue.(type) {
+		case json.Number:
+			if right, err := rightVal.Float64(); err == nil {
+				switch operator {
+				case equal:
+					if left == right {
+						return true
+					}
+				case lessThan:
+					if left < right {
+						return true
+					}
+				case greaterThan:
+					if left > right {
+						return true
+					}
+				case lessOrEqual:
+					if left <= right {
+						return true
+					}
+				case greaterOrEqual:
+					if left >= right {
+						return true
+					}
+				}
+			}
+		case float32, float64, int, uint, int8, uint8, int16, uint16, int32, uint32, int64, uint64:
+			right, err := convertor.ToFloat(rightValue)
+			if err != nil {
+				return false
+			}
+
+			switch operator {
+			case equal:
+				if left == right {
+					return true
+				}
+			case lessThan:
+				if left < right {
+					return true
+				}
+			case greaterThan:
+				if left > right {
+					return true
+				}
+			case lessOrEqual:
+				if left <= right {
+					return true
+				}
+			case greaterOrEqual:
+				if left >= right {
+					return true
+				}
+			}
+		}
+
+	case string:
+		left := leftVal
+		switch right := rightValue.(type) {
+		case string:
+			switch operator {
+			case equal:
+				if left == right {
+					return true
+				}
+			case lessThan:
+				if left < right {
+					return true
+				}
+			case greaterThan:
+				if left > right {
+					return true
+				}
+			case lessOrEqual:
+				if left <= right {
+					return true
+				}
+			case greaterOrEqual:
+				if left >= right {
+					return true
+				}
+			}
+		}
+
+	case bool:
+		left := leftVal
+		switch right := rightValue.(type) {
+		case bool:
+			switch operator {
+			case equal:
+				if left == right {
+					return true
+				}
+			}
+		}
+
+	}
+
+	return false
+}
--- a/compare/compare_test.go
+++ b/compare/compare_test.go
@@ -0,0 +1,134 @@
+package compare
+
+import (
+	"testing"
+	"time"
+
+	"github.com/duke-git/lancet/internal"
+)
+
+func TestEqual(t *testing.T) {
+	assert := internal.NewAssert(t, "TestEqual")
+
+	assert.Equal(true, Equal(1, 1))
+	assert.Equal(true, Equal(int64(1), int64(1)))
+	assert.Equal(true, Equal("a", "a"))
+	assert.Equal(true, Equal(true, true))
+	assert.Equal(true, Equal([]int{1, 2, 3}, []int{1, 2, 3}))
+	assert.Equal(true, Equal(map[int]string{1: "a", 2: "b"}, map[int]string{1: "a", 2: "b"}))
+
+	assert.Equal(false, Equal(1, 2))
+	assert.Equal(false, Equal(1, int64(1)))
+	assert.Equal(false, Equal("a", "b"))
+	assert.Equal(false, Equal(true, false))
+	assert.Equal(false, Equal([]int{1, 2}, []int{1, 2, 3}))
+	assert.Equal(false, Equal(map[int]string{1: "a", 2: "b"}, map[int]string{1: "a"}))
+
+	time1 := time.Now()
+	time2 := time1.Add(time.Second)
+	time3 := time1.Add(time.Second)
+
+	assert.Equal(false, Equal(time1, time2))
+	assert.Equal(true, Equal(time2, time3))
+
+	st1 := struct {
+		A string
+		B string
+	}{
+		A: "a",
+		B: "b",
+	}
+
+	st2 := struct {
+		A string
+		B string
+	}{
+		A: "a",
+		B: "b",
+	}
+
+	st3 := struct {
+		A string
+		B string
+	}{
+		A: "a1",
+		B: "b",
+	}
+
+	assert.Equal(true, Equal(st1, st2))
+	assert.Equal(false, Equal(st1, st3))
+}
+
+func TestEqualValue(t *testing.T) {
+	assert := internal.NewAssert(t, "TestEqualValue")
+
+	assert.Equal(true, EqualValue(1, 1))
+	assert.Equal(true, EqualValue(int(1), int64(1)))
+	assert.Equal(true, EqualValue(1, "1"))
+
+	assert.Equal(false, EqualValue(1, "2"))
+}
+
+func TestLessThan(t *testing.T) {
+	assert := internal.NewAssert(t, "TestLessThan")
+
+	assert.Equal(true, LessThan(1, 2))
+	assert.Equal(true, LessThan(1.1, 2.2))
+	assert.Equal(true, LessThan("a", "b"))
+
+	time1 := time.Now()
+	time2 := time1.Add(time.Second)
+	assert.Equal(true, LessThan(time1, time2))
+
+	assert.Equal(false, LessThan(1, 1))
+	assert.Equal(false, LessThan(1, int64(1)))
+}
+
+func TestGreaterThan(t *testing.T) {
+	assert := internal.NewAssert(t, "TestGreaterThan")
+
+	assert.Equal(true, GreaterThan(2, 1))
+	assert.Equal(true, GreaterThan(2.2, 1.1))
+	assert.Equal(true, GreaterThan("b", "a"))
+
+	time1 := time.Now()
+	time2 := time1.Add(time.Second)
+	assert.Equal(true, GreaterThan(time2, time1))
+
+	assert.Equal(false, GreaterThan(1, 2))
+	assert.Equal(false, GreaterThan(int64(2), 1))
+	assert.Equal(false, GreaterThan("b", "c"))
+}
+
+func TestLessOrEqual(t *testing.T) {
+	assert := internal.NewAssert(t, "TestLessOrEqual")
+
+	assert.Equal(true, LessOrEqual(1, 2))
+	assert.Equal(true, LessOrEqual(1, 1))
+	assert.Equal(true, LessOrEqual(1.1, 2.2))
+	assert.Equal(true, LessOrEqual("a", "b"))
+
+	time1 := time.Now()
+	time2 := time1.Add(time.Second)
+	assert.Equal(true, LessOrEqual(time1, time2))
+
+	assert.Equal(false, LessOrEqual(2, 1))
+	assert.Equal(false, LessOrEqual(1, int64(2)))
+}
+
+func TestGreaterOrEqual(t *testing.T) {
+	assert := internal.NewAssert(t, "TestGreaterThan")
+
+	assert.Equal(true, GreaterOrEqual(2, 1))
+	assert.Equal(true, GreaterOrEqual(1, 1))
+	assert.Equal(true, GreaterOrEqual(2.2, 1.1))
+	assert.Equal(true, GreaterOrEqual("b", "b"))
+
+	time1 := time.Now()
+	time2 := time1.Add(time.Second)
+	assert.Equal(true, GreaterOrEqual(time2, time1))
+
+	assert.Equal(false, GreaterOrEqual(1, 2))
+	assert.Equal(false, GreaterOrEqual(int64(2), 1))
+	assert.Equal(false, GreaterOrEqual("b", "c"))
+}
--- a/convertor/convertor.go
+++ b/convertor/convertor.go
@@ -6,9 +6,12 @@ package convertor

 import (
 	"bytes"
+	"encoding/binary"
 	"encoding/gob"
 	"encoding/json"
+	"errors"
 	"fmt"
+	"math"
 	"reflect"
 	"regexp"
 	"strconv"
@@ -21,14 +24,44 @@ func ToBool(s string) (bool, error) {
 }

 // ToBytes convert interface to bytes
-func ToBytes(data any) ([]byte, error) {
-	var buf bytes.Buffer
-	enc := gob.NewEncoder(&buf)
-	err := enc.Encode(data)
-	if err != nil {
-		return nil, err
+func ToBytes(value interface{}) ([]byte, error) {
+	v := reflect.ValueOf(value)
+
+	switch value.(type) {
+	case int, int8, int16, int32, int64:
+		number := v.Int()
+		buf := bytes.NewBuffer([]byte{})
+		buf.Reset()
+		err := binary.Write(buf, binary.BigEndian, number)
+		return buf.Bytes(), err
+	case uint, uint8, uint16, uint32, uint64:
+		number := v.Uint()
+		buf := bytes.NewBuffer([]byte{})
+		buf.Reset()
+		err := binary.Write(buf, binary.BigEndian, number)
+		return buf.Bytes(), err
+	case float32:
+		number := float32(v.Float())
+		bits := math.Float32bits(number)
+		bytes := make([]byte, 4)
+		binary.BigEndian.PutUint32(bytes, bits)
+		return bytes, nil
+	case float64:
+		number := v.Float()
+		bits := math.Float64bits(number)
+		bytes := make([]byte, 8)
+		binary.BigEndian.PutUint64(bytes, bits)
+		return bytes, nil
+	case bool:
+		return strconv.AppendBool([]byte{}, v.Bool()), nil
+	case string:
+		return []byte(v.String()), nil
+	case []byte:
+		return v.Bytes(), nil
+	default:
+		newValue, err := json.Marshal(value)
+		return newValue, err
 	}
-	return buf.Bytes(), nil
 }

 // ToChar convert string to char slice
@@ -44,7 +77,7 @@ func ToChar(s string) []string {
 }

 // ToString convert value to string
-func ToString(value any) string {
+func ToString(value interface{}) string {
 	res := ""
 	if value == nil {
 		return res
@@ -76,7 +109,7 @@ func ToString(value any) string {
 }

 // ToJson convert value to a valid json string
-func ToJson(value any) (string, error) {
+func ToJson(value interface{}) (string, error) {
 	res, err := json.Marshal(value)
 	if err != nil {
 		return "", err
@@ -86,7 +119,7 @@ func ToJson(value any) (string, error) {
 }

 // ToFloat convert value to a float64, if input is not a float return 0.0 and error
-func ToFloat(value any) (float64, error) {
+func ToFloat(value interface{}) (float64, error) {
 	v := reflect.ValueOf(value)

 	res := 0.0
@@ -113,7 +146,7 @@ func ToFloat(value any) (float64, error) {
 }

 // ToInt convert value to a int64, if input is not a numeric format return 0 and error
-func ToInt(value any) (int64, error) {
+func ToInt(value interface{}) (int64, error) {
 	v := reflect.ValueOf(value)

 	var res int64
@@ -141,7 +174,7 @@ func ToInt(value any) (int64, error) {

 // StructToMap convert struct to map, only convert exported struct field
 // map key is specified same as struct field tag `json` value
-func StructToMap(value any) (map[string]any, error) {
+func StructToMap(value interface{}) (map[string]interface{}, error) {
 	v := reflect.ValueOf(value)
 	t := reflect.TypeOf(value)

@@ -152,7 +185,7 @@ func StructToMap(value any) (map[string]any, error) {
 		return nil, fmt.Errorf("data type %T not support, shuld be struct or pointer to struct", value)
 	}

-	res := make(map[string]any)
+	res := make(map[string]interface{})

 	fieldNum := t.NumField()
 	pattern := `^[A-Z]`
@@ -198,3 +231,146 @@ func ColorRGBToHex(red, green, blue int) string {

 	return "#" + r + g + b
 }
+
+// ToChannel convert a array of elements to a read-only channels
+func ToChannel(array []interface{}) <-chan interface{} {
+	ch := make(chan interface{})
+
+	go func() {
+		for _, item := range array {
+			ch <- item
+		}
+		close(ch)
+	}()
+
+	return ch
+}
+
+// EncodeByte encode data to byte
+func EncodeByte(data interface{}) ([]byte, error) {
+	buffer := bytes.NewBuffer(nil)
+	encoder := gob.NewEncoder(buffer)
+	err := encoder.Encode(data)
+	if err != nil {
+		return nil, err
+	}
+	return buffer.Bytes(), nil
+}
+
+// DecodeByte decode byte data to target object
+func DecodeByte(data []byte, target interface{}) error {
+	buffer := bytes.NewBuffer(data)
+	decoder := gob.NewDecoder(buffer)
+	return decoder.Decode(target)
+}
+
+// DeepClone creates a deep copy of passed item.
+// can't clone unexported field of struct
+func DeepClone(src interface{}) interface{} {
+	c := cloner{
+		ptrs: map[reflect.Type]map[uintptr]reflect.Value{},
+	}
+	result := c.clone(reflect.ValueOf(src))
+	if result.Kind() == reflect.Invalid {
+		return nil
+	}
+
+	return result.Interface()
+}
+
+// // CopyProperties copies each field from the source into the destination. It recursively copies struct pointers and interfaces that contain struct pointers.
+// func CopyProperties(dst, src interface{}) (err error) {
+// 	defer func() {
+// 		if e := recover(); e != nil {
+// 			err = errors.New(fmt.Sprintf("%v", e))
+// 		}
+// 	}()
+
+// 	dstType, dstValue := reflect.TypeOf(dst), reflect.ValueOf(dst)
+// 	srcType, srcValue := reflect.TypeOf(src), reflect.ValueOf(src)
+
+// 	if dstType.Kind() != reflect.Ptr || dstType.Elem().Kind() != reflect.Struct {
+// 		return errors.New("CopyProperties: param dst should be struct pointer")
+// 	}
+
+// 	if srcType.Kind() == reflect.Ptr {
+// 		srcType, srcValue = srcType.Elem(), srcValue.Elem()
+// 	}
+// 	if srcType.Kind() != reflect.Struct {
+// 		return errors.New("CopyProperties: param src should be a struct or struct pointer")
+// 	}
+
+// 	dstType, dstValue = dstType.Elem(), dstValue.Elem()
+
+// 	propertyNums := dstType.NumField()
+
+// 	for i := 0; i < propertyNums; i++ {
+// 		property := dstType.Field(i)
+// 		propertyValue := srcValue.FieldByName(property.Name)
+
+// 		if !propertyValue.IsValid() || property.Type != propertyValue.Type() {
+// 			continue
+// 		}
+
+// 		if dstValue.Field(i).CanSet() {
+// 			dstValue.Field(i).Set(propertyValue)
+// 		}
+// 	}
+
+// 	return nil
+// }
+
+// CopyProperties copies each field from the source into the destination. It recursively copies struct pointers and interfaces that contain struct pointers.
+// use json.Marshal/Unmarshal, so json tag should be set for fields of dst and src struct.
+func CopyProperties(dst, src interface{}) error {
+	dstType, srcType := reflect.TypeOf(dst), reflect.TypeOf(src)
+
+	if dstType.Kind() != reflect.Ptr || dstType.Elem().Kind() != reflect.Struct {
+		return errors.New("CopyProperties: parameter dst should be struct pointer")
+	}
+
+	if srcType.Kind() == reflect.Ptr {
+		srcType = srcType.Elem()
+	}
+	if srcType.Kind() != reflect.Struct {
+		return errors.New("CopyProperties: parameter src should be a struct or struct pointer")
+	}
+
+	bytes, err := json.Marshal(src)
+	if err != nil {
+		return fmt.Errorf("CopyProperties: unable to marshal src: %s", err)
+	}
+	err = json.Unmarshal(bytes, dst)
+	if err != nil {
+		return fmt.Errorf("CopyProperties: unable to unmarshal into dst: %s", err)
+	}
+
+	return nil
+}
+
+// ToInterface converts reflect value to its interface type.
+func ToInterface(v reflect.Value) (value interface{}, ok bool) {
+	if v.IsValid() && v.CanInterface() {
+		return v.Interface(), true
+	}
+	switch v.Kind() {
+	case reflect.Bool:
+		return v.Bool(), true
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return v.Int(), true
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		return v.Uint(), true
+	case reflect.Float32, reflect.Float64:
+		return v.Float(), true
+	case reflect.Complex64, reflect.Complex128:
+		return v.Complex(), true
+	case reflect.String:
+		return v.String(), true
+	case reflect.Ptr:
+		return ToInterface(v.Elem())
+	case reflect.Interface:
+		return ToInterface(v.Elem())
+	default:
+		return nil, false
+	}
+}
--- a/convertor/convertor_internal.go
+++ b/convertor/convertor_internal.go
@@ -0,0 +1,216 @@
+// Copyright 2023 dudaodong@gmail.com. All rights reserved.
+// Use of this source code is governed by MIT license
+
+// Package convertor implements some functions to convert data.
+package convertor
+
+import "reflect"
+
+type cloner struct {
+	ptrs map[reflect.Type]map[uintptr]reflect.Value
+}
+
+// clone return a duplicate of passed item.
+func (c *cloner) clone(v reflect.Value) reflect.Value {
+	switch v.Kind() {
+	case reflect.Invalid:
+		return reflect.ValueOf(nil)
+
+	// bool
+	case reflect.Bool:
+		return reflect.ValueOf(v.Bool())
+
+	//int
+	case reflect.Int:
+		return reflect.ValueOf(int(v.Int()))
+	case reflect.Int8:
+		return reflect.ValueOf(int8(v.Int()))
+	case reflect.Int16:
+		return reflect.ValueOf(int16(v.Int()))
+	case reflect.Int32:
+		return reflect.ValueOf(int32(v.Int()))
+	case reflect.Int64:
+		return reflect.ValueOf(v.Int())
+
+	// uint
+	case reflect.Uint:
+		return reflect.ValueOf(uint(v.Uint()))
+	case reflect.Uint8:
+		return reflect.ValueOf(uint8(v.Uint()))
+	case reflect.Uint16:
+		return reflect.ValueOf(uint16(v.Uint()))
+	case reflect.Uint32:
+		return reflect.ValueOf(uint32(v.Uint()))
+	case reflect.Uint64:
+		return reflect.ValueOf(v.Uint())
+
+	// float
+	case reflect.Float32:
+		return reflect.ValueOf(float32(v.Float()))
+	case reflect.Float64:
+		return reflect.ValueOf(v.Float())
+
+	// complex
+	case reflect.Complex64:
+		return reflect.ValueOf(complex64(v.Complex()))
+	case reflect.Complex128:
+		return reflect.ValueOf(v.Complex())
+
+	// string
+	case reflect.String:
+		return reflect.ValueOf(v.String())
+
+	// array
+	case reflect.Array, reflect.Slice:
+		return c.cloneArray(v)
+
+	// map
+	case reflect.Map:
+		return c.cloneMap(v)
+
+	// Ptr
+	case reflect.Ptr:
+		return c.clonePtr(v)
+
+	// struct
+	case reflect.Struct:
+		return c.cloneStruct(v)
+
+	// func
+	case reflect.Func:
+		return v
+
+	// interface
+	case reflect.Interface:
+		return c.clone(v.Elem())
+
+	}
+
+	return reflect.Zero(v.Type())
+}
+
+func (c *cloner) cloneArray(v reflect.Value) reflect.Value {
+	if v.IsNil() {
+		return reflect.Zero(v.Type())
+	}
+
+	arr := reflect.MakeSlice(v.Type(), v.Len(), v.Len())
+
+	for i := 0; i < v.Len(); i++ {
+		val := c.clone(v.Index(i))
+
+		if val.IsValid() {
+			continue
+		}
+
+		item := arr.Index(i)
+		if !item.CanSet() {
+			continue
+		}
+
+		item.Set(val.Convert(item.Type()))
+	}
+
+	return arr
+}
+
+func (c *cloner) cloneMap(v reflect.Value) reflect.Value {
+	if v.IsNil() {
+		return reflect.Zero(v.Type())
+	}
+
+	clonedMap := reflect.MakeMap(v.Type())
+
+	for _, key := range v.MapKeys() {
+		value := v.MapIndex(key)
+		clonedKey := c.clone(key)
+		clonedValue := c.clone(value)
+
+		if !isNillable(clonedKey) || !clonedKey.IsNil() {
+			clonedKey = clonedKey.Convert(key.Type())
+		}
+
+		if (!isNillable(clonedValue) || !clonedValue.IsNil()) && clonedValue.IsValid() {
+			clonedValue = clonedValue.Convert(value.Type())
+		}
+
+		if !clonedValue.IsValid() {
+			clonedValue = reflect.Zero(clonedMap.Type().Elem())
+		}
+
+		clonedMap.SetMapIndex(clonedKey, clonedValue)
+	}
+
+	return clonedMap
+}
+
+func isNillable(v reflect.Value) bool {
+	switch v.Kind() {
+	case reflect.Chan, reflect.Interface, reflect.Ptr, reflect.Func:
+		return true
+	}
+	return false
+}
+
+func (c *cloner) clonePtr(v reflect.Value) reflect.Value {
+	if v.IsNil() {
+		return reflect.Zero(v.Type())
+	}
+
+	var newVal reflect.Value
+
+	if v.Elem().CanAddr() {
+		ptrs, exists := c.ptrs[v.Type()]
+		if exists {
+			if newVal, exists := ptrs[v.Elem().UnsafeAddr()]; exists {
+				return newVal
+			}
+		}
+	}
+
+	newVal = c.clone(v.Elem())
+
+	if v.Elem().CanAddr() {
+		ptrs, exists := c.ptrs[v.Type()]
+		if exists {
+			if newVal, exists := ptrs[v.Elem().UnsafeAddr()]; exists {
+				return newVal
+			}
+		}
+	}
+
+	clonedPtr := reflect.New(newVal.Type())
+	clonedPtr.Elem().Set(newVal)
+
+	return clonedPtr
+}
+
+func (c *cloner) cloneStruct(v reflect.Value) reflect.Value {
+	clonedStructPtr := reflect.New(v.Type())
+	clonedStruct := clonedStructPtr.Elem()
+
+	if v.CanAddr() {
+		ptrs := c.ptrs[clonedStructPtr.Type()]
+		if ptrs == nil {
+			ptrs = make(map[uintptr]reflect.Value)
+			c.ptrs[clonedStructPtr.Type()] = ptrs
+		}
+		ptrs[v.UnsafeAddr()] = clonedStructPtr
+	}
+
+	for i := 0; i < v.NumField(); i++ {
+		newStructValue := clonedStruct.Field(i)
+		if !newStructValue.CanSet() {
+			continue
+		}
+
+		clonedVal := c.clone(v.Field(i))
+		if !clonedVal.IsValid() {
+			continue
+		}
+
+		newStructValue.Set(clonedVal.Convert(newStructValue.Type()))
+	}
+
+	return clonedStruct
+}
--- a/convertor/convertor_test.go
+++ b/convertor/convertor_test.go
@@ -2,9 +2,10 @@ package convertor

 import (
 	"fmt"
+	"reflect"
 	"testing"

-	"github.com/duke-git/lancet/v2/internal"
+	"github.com/duke-git/lancet/internal"
 )

 func TestToChar(t *testing.T) {
@@ -36,26 +37,33 @@ func TestToBool(t *testing.T) {
 func TestToBytes(t *testing.T) {
 	assert := internal.NewAssert(t, "TestToBytes")

-	cases := []any{
+	cases := []interface{}{
 		0,
 		false,
 		"1",
 	}
 	expected := [][]byte{
-		{3, 4, 0, 0},
-		{3, 2, 0, 0},
-		{4, 12, 0, 1, 49},
+		{0, 0, 0, 0, 0, 0, 0, 0},
+		{102, 97, 108, 115, 101},
+		{49},
 	}
 	for i := 0; i < len(cases); i++ {
 		actual, _ := ToBytes(cases[i])
 		assert.Equal(expected[i], actual)
 	}
+
+	bytesData, err := ToBytes("abc")
+	if err != nil {
+		t.Error(err)
+		t.Fail()
+	}
+	assert.Equal("abc", ToString(bytesData))
 }

 func TestToInt(t *testing.T) {
 	assert := internal.NewAssert(t, "TestToInt")

-	cases := []any{"123", "-123", 123,
+	cases := []interface{}{"123", "-123", 123,
 		uint(123), uint8(123), uint16(123), uint32(123), uint64(123),
 		float32(12.3), float64(12.3),
 		"abc", false, "111111111111111111111111111111111111111"}
@@ -71,7 +79,7 @@ func TestToInt(t *testing.T) {
 func TestToFloat(t *testing.T) {
 	assert := internal.NewAssert(t, "TestToFloat")

-	cases := []any{
+	cases := []interface{}{
 		"", "-1", "-.11", "1.23e3", ".123e10", "abc",
 		int(0), int8(1), int16(-1), int32(123), int64(123),
 		uint(123), uint8(123), uint16(123), uint32(123), uint64(123),
@@ -99,7 +107,7 @@ func TestToString(t *testing.T) {
 	}
 	aStruct := TestStruct{Name: "TestStruct"}

-	cases := []any{
+	cases := []interface{}{
 		"", nil,
 		int(0), int8(1), int16(-1), int32(123), int64(123),
 		uint(123), uint8(123), uint16(123), uint32(123), uint64(123),
@@ -147,7 +155,7 @@ func TestStructToMap(t *testing.T) {
 		100,
 	}
 	pm, _ := StructToMap(p)
-	var expected = map[string]any{"name": "test"}
+	var expected = map[string]interface{}{"name": "test"}
 	assert.Equal(expected, pm)
 }

@@ -171,3 +179,163 @@ func TestColorRGBToHex(t *testing.T) {
 	assert := internal.NewAssert(t, "TestColorRGBToHex")
 	assert.Equal(expected, colorHex)
 }
+
+func TestToChannel(t *testing.T) {
+	assert := internal.NewAssert(t, "TestToChannel")
+
+	ch := ToChannel([]interface{}{1, 2, 3})
+	val1, _ := <-ch
+	assert.Equal(1, val1)
+
+	val2, _ := <-ch
+	assert.Equal(2, val2)
+
+	val3, _ := <-ch
+	assert.Equal(3, val3)
+
+	_, ok := <-ch
+	assert.Equal(false, ok)
+}
+
+func TestEncodeByte(t *testing.T) {
+	assert := internal.NewAssert(t, "TestEncodeByte")
+
+	byteData, _ := EncodeByte("abc")
+	expected := []byte{6, 12, 0, 3, 97, 98, 99}
+
+	assert.Equal(expected, byteData)
+}
+
+func TestDecodeByte(t *testing.T) {
+	assert := internal.NewAssert(t, "TestDecodeByte")
+
+	var obj string
+	byteData := []byte{6, 12, 0, 3, 97, 98, 99}
+	DecodeByte(byteData, &obj)
+	assert.Equal("abc", obj)
+}
+
+func TestDeepClone(t *testing.T) {
+	// assert := internal.NewAssert(t, "TestDeepClone")
+
+	type Struct struct {
+		Str        string
+		Int        int
+		Float      float64
+		Bool       bool
+		Nil        interface{}
+		unexported string
+	}
+
+	cases := []interface{}{
+		true,
+		1,
+		0.1,
+		map[string]int{
+			"a": 1,
+			"b": 2,
+		},
+		&Struct{
+			Str:   "test",
+			Int:   1,
+			Float: 0.1,
+			Bool:  true,
+			Nil:   nil,
+			// unexported: "can't be cloned",
+		},
+	}
+
+	for i, item := range cases {
+		cloned := DeepClone(item)
+
+		t.Log(cloned)
+		if &cloned == &item {
+			t.Fatalf("[TestDeepClone case #%d failed]: equal pointer", i)
+		}
+
+		if !reflect.DeepEqual(item, cloned) {
+			t.Fatalf("[TestDeepClone case #%d failed] unequal objects", i)
+		}
+	}
+}
+
+func TestCopyProperties(t *testing.T) {
+	assert := internal.NewAssert(t, "TestCopyProperties")
+
+	type Disk struct {
+		Name    string  `json:"name"`
+		Total   string  `json:"total"`
+		Used    string  `json:"used"`
+		Percent float64 `json:"percent"`
+	}
+
+	type DiskVO struct {
+		Name    string  `json:"name"`
+		Total   string  `json:"total"`
+		Used    string  `json:"used"`
+		Percent float64 `json:"percent"`
+	}
+
+	type Indicator struct {
+		Id      string    `json:"id"`
+		Ip      string    `json:"ip"`
+		UpTime  string    `json:"upTime"`
+		LoadAvg string    `json:"loadAvg"`
+		Cpu     int       `json:"cpu"`
+		Disk    []Disk    `json:"disk"`
+		Stop    chan bool `json:"-"`
+	}
+
+	type IndicatorVO struct {
+		Id      string   `json:"id"`
+		Ip      string   `json:"ip"`
+		UpTime  string   `json:"upTime"`
+		LoadAvg string   `json:"loadAvg"`
+		Cpu     int64    `json:"cpu"`
+		Disk    []DiskVO `json:"disk"`
+	}
+
+	indicator := &Indicator{Id: "001", Ip: "127.0.0.1", Cpu: 1, Disk: []Disk{
+		{Name: "disk-001", Total: "100", Used: "1", Percent: 10},
+		{Name: "disk-002", Total: "200", Used: "1", Percent: 20},
+		{Name: "disk-003", Total: "300", Used: "1", Percent: 30},
+	}}
+
+	indicatorVO := IndicatorVO{}
+
+	err := CopyProperties(&indicatorVO, indicator)
+
+	assert.IsNil(err)
+	assert.Equal("001", indicatorVO.Id)
+	assert.Equal("127.0.0.1", indicatorVO.Ip)
+	assert.Equal(3, len(indicatorVO.Disk))
+}
+
+func TestToInterface(t *testing.T) {
+	assert := internal.NewAssert(t, "TestToInterface")
+
+	cases := []reflect.Value{
+		reflect.ValueOf("abc"),
+		reflect.ValueOf(int(0)), reflect.ValueOf(int8(1)), reflect.ValueOf(int16(-1)), reflect.ValueOf(int32(123)), reflect.ValueOf(int64(123)),
+		reflect.ValueOf(uint(123)), reflect.ValueOf(uint8(123)), reflect.ValueOf(uint16(123)), reflect.ValueOf(uint32(123)), reflect.ValueOf(uint64(123)),
+		reflect.ValueOf(float64(12.3)), reflect.ValueOf(float32(12.3)),
+		reflect.ValueOf(true), reflect.ValueOf(false),
+	}
+
+	expected := []interface{}{
+		"abc",
+		0, int8(1), int16(-1), int32(123), int64(123),
+		uint(123), uint8(123), uint16(123), uint32(123), uint64(123),
+		float64(12.3), float32(12.3),
+		true, false,
+	}
+
+	for i := 0; i < len(cases); i++ {
+		actual, _ := ToInterface(cases[i])
+		assert.Equal(expected[i], actual)
+	}
+
+	nilVal, ok := ToInterface(reflect.ValueOf(nil))
+	assert.EqualValues(nil, nilVal)
+	assert.Equal(false, ok)
+}
--- a/cryptor/aes.go
+++ b/cryptor/aes.go
@@ -17,14 +17,23 @@ import (
 // AesEcbEncrypt encrypt data with key use AES ECB algorithm
 // len(key) should be 16, 24 or 32
 func AesEcbEncrypt(data, key []byte) []byte {
-	cipher, _ := aes.NewCipher(generateAesKey(key))
+	size := len(key)
+	if size != 16 && size != 24 && size != 32 {
+		panic("key length shoud be 16 or 24 or 32")
+	}
+
+	cipher, _ := aes.NewCipher(generateAesKey(key, size))
 	length := (len(data) + aes.BlockSize) / aes.BlockSize
+
 	plain := make([]byte, length*aes.BlockSize)
+
 	copy(plain, data)
+
 	pad := byte(len(plain) - len(data))
 	for i := len(data); i < len(plain); i++ {
 		plain[i] = pad
 	}
+
 	encrypted := make([]byte, len(plain))
 	for bs, be := 0, cipher.BlockSize(); bs <= len(data); bs, be = bs+cipher.BlockSize(), be+cipher.BlockSize() {
 		cipher.Encrypt(encrypted[bs:be], plain[bs:be])
@@ -36,9 +45,14 @@ func AesEcbEncrypt(data, key []byte) []byte {
 // AesEcbDecrypt decrypt data with key use AES ECB algorithm
 // len(key) should be 16, 24 or 32
 func AesEcbDecrypt(encrypted, key []byte) []byte {
-	cipher, _ := aes.NewCipher(generateAesKey(key))
+	size := len(key)
+	if size != 16 && size != 24 && size != 32 {
+		panic("key length shoud be 16 or 24 or 32")
+	}
+
+	cipher, _ := aes.NewCipher(generateAesKey(key, size))
 	decrypted := make([]byte, len(encrypted))
-	//
+
 	for bs, be := 0, cipher.BlockSize(); bs < len(encrypted); bs, be = bs+cipher.BlockSize(), be+cipher.BlockSize() {
 		cipher.Decrypt(decrypted[bs:be], encrypted[bs:be])
 	}
@@ -54,14 +68,18 @@ func AesEcbDecrypt(encrypted, key []byte) []byte {
 // AesCbcEncrypt encrypt data with key use AES CBC algorithm
 // len(key) should be 16, 24 or 32
 func AesCbcEncrypt(data, key []byte) []byte {
-	// len(key) should be 16, 24 or 32
 	block, _ := aes.NewCipher(key)
-	blockSize := block.BlockSize()
-	data = pkcs7Padding(data, blockSize)
-	blockMode := cipher.NewCBCEncrypter(block, key[:blockSize])
+	data = pkcs7Padding(data, block.BlockSize())
+
+	encrypted := make([]byte, aes.BlockSize+len(data))
+	iv := encrypted[:aes.BlockSize]
+	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
+		panic(err)
+	}
+
+	mode := cipher.NewCBCEncrypter(block, iv)
+	mode.CryptBlocks(encrypted[aes.BlockSize:], data)

-	encrypted := make([]byte, len(data))
-	blockMode.CryptBlocks(encrypted, data)
 	return encrypted
 }

@@ -69,12 +87,14 @@ func AesCbcEncrypt(data, key []byte) []byte {
 // len(key) should be 16, 24 or 32
 func AesCbcDecrypt(encrypted, key []byte) []byte {
 	block, _ := aes.NewCipher(key)
-	blockSize := block.BlockSize()
-	blockMode := cipher.NewCBCDecrypter(block, key[:blockSize])

-	decrypted := make([]byte, len(encrypted))
-	blockMode.CryptBlocks(decrypted, encrypted)
-	decrypted = pkcs7UnPadding(decrypted)
+	iv := encrypted[:aes.BlockSize]
+	encrypted = encrypted[aes.BlockSize:]
+
+	mode := cipher.NewCBCDecrypter(block, iv)
+	mode.CryptBlocks(encrypted, encrypted)
+
+	decrypted := pkcs7UnPadding(encrypted)
 	return decrypted
 }

--- a/cryptor/aes_test.go
+++ b/cryptor/aes_test.go
@@ -3,7 +3,7 @@ package cryptor
 import (
 	"testing"

-	"github.com/duke-git/lancet/v2/internal"
+	"github.com/duke-git/lancet/internal"
 )

 func TestAesEcbEncrypt(t *testing.T) {
--- a/cryptor/basic_test.go
+++ b/cryptor/basic_test.go
@@ -3,7 +3,7 @@ package cryptor
 import (
 	"testing"

-	"github.com/duke-git/lancet/v2/internal"
+	"github.com/duke-git/lancet/internal"
 )

 func TestBase64StdEncode(t *testing.T) {
--- a/cryptor/crypto_internal.go
+++ b/cryptor/crypto_internal.go
@@ -2,15 +2,15 @@ package cryptor

 import "bytes"

-func generateAesKey(key []byte) []byte {
-	genKey := make([]byte, 16)
-	copy(genKey, key)
-	for i := 16; i < len(key); {
-		for j := 0; j < 16 && i < len(key); j, i = j+1, i+1 {
-			genKey[j] ^= key[i]
+func generateAesKey(key []byte, size int) []byte {
+	aesKey := make([]byte, size)
+	copy(aesKey, key)
+	for i := size; i < len(key); {
+		for j := 0; j < size && i < len(key); j, i = j+1, i+1 {
+			aesKey[j] ^= key[i]
 		}
 	}
-	return genKey
+	return aesKey
 }

 func generateDesKey(key []byte) []byte {
--- a/cryptor/des.go
+++ b/cryptor/des.go
@@ -55,12 +55,16 @@ func DesEcbDecrypt(encrypted, key []byte) []byte {
 // len(key) should be 8
 func DesCbcEncrypt(data, key []byte) []byte {
 	block, _ := des.NewCipher(key)
-	blockSize := block.BlockSize()
-	data = pkcs7Padding(data, blockSize)
-	blockMode := cipher.NewCBCEncrypter(block, key[:blockSize])
+	data = pkcs7Padding(data, block.BlockSize())

-	encrypted := make([]byte, len(data))
-	blockMode.CryptBlocks(encrypted, data)
+	encrypted := make([]byte, des.BlockSize+len(data))
+	iv := encrypted[:des.BlockSize]
+	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
+		panic(err)
+	}
+
+	mode := cipher.NewCBCEncrypter(block, iv)
+	mode.CryptBlocks(encrypted[des.BlockSize:], data)

 	return encrypted
 }
@@ -69,13 +73,14 @@ func DesCbcEncrypt(data, key []byte) []byte {
 // len(key) should be 8
 func DesCbcDecrypt(encrypted, key []byte) []byte {
 	block, _ := des.NewCipher(key)
-	blockSize := block.BlockSize()
-	blockMode := cipher.NewCBCDecrypter(block, key[:blockSize])

-	decrypted := make([]byte, len(encrypted))
-	blockMode.CryptBlocks(decrypted, encrypted)
-	decrypted = pkcs7UnPadding(decrypted)
+	iv := encrypted[:des.BlockSize]
+	encrypted = encrypted[des.BlockSize:]

+	mode := cipher.NewCBCDecrypter(block, iv)
+	mode.CryptBlocks(encrypted, encrypted)
+
+	decrypted := pkcs7UnPadding(encrypted)
 	return decrypted
 }

--- a/cryptor/des_test.go
+++ b/cryptor/des_test.go
@@ -3,7 +3,7 @@ package cryptor
 import (
 	"testing"

-	"github.com/duke-git/lancet/v2/internal"
+	"github.com/duke-git/lancet/internal"
 )

 func TestDesEcbEncrypt(t *testing.T) {
--- a/cryptor/rsa_test.go
+++ b/cryptor/rsa_test.go
@@ -3,7 +3,7 @@ package cryptor
 import (
 	"testing"

-	"github.com/duke-git/lancet/v2/internal"
+	"github.com/duke-git/lancet/internal"
 )

 func TestRsaEncrypt(t *testing.T) {
--- a/datastructure/link/doublylink.go
+++ b/datastructure/link/doublylink.go
@@ -1,241 +0,0 @@
-package datastructure
-
-import (
-	"errors"
-	"fmt"
-
-	"github.com/duke-git/lancet/v2/datastructure"
-)
-
-// DoublyLink is a linked list. Whose node has a generic Value, Pre pointer points to a previous node of the link, Next pointer points to a next node of the link.
-type DoublyLink[T any] struct {
-	Head   *datastructure.LinkNode[T]
-	length int
-}
-
-// NewDoublyLink return *DoublyLink instance
-func NewDoublyLink[T any]() *DoublyLink[T] {
-	return &DoublyLink[T]{Head: nil}
-}
-
-// InsertAtHead insert value into doubly linklist at head index
-func (link *DoublyLink[T]) InsertAtHead(value T) {
-	newNode := datastructure.NewLinkNode(value)
-	size := link.Size()
-
-	if size == 0 {
-		link.Head = newNode
-		link.length++
-		return
-	}
-
-	newNode.Next = link.Head
-	newNode.Pre = nil
-
-	link.Head.Pre = newNode
-	link.Head = newNode
-
-	link.length++
-}
-
-// InsertAtTail insert value into doubly linklist at tail index
-func (link *DoublyLink[T]) InsertAtTail(value T) {
-	current := link.Head
-	if current == nil {
-		link.InsertAtHead(value)
-		return
-	}
-
-	for current.Next != nil {
-		current = current.Next
-	}
-
-	newNode := datastructure.NewLinkNode(value)
-	newNode.Next = nil
-	newNode.Pre = current
-	current.Next = newNode
-
-	link.length++
-}
-
-// InsertAt insert value into doubly linklist at index
-func (link *DoublyLink[T]) InsertAt(index int, value T) error {
-	size := link.length
-	if index < 0 || index > size {
-		return errors.New("param index should between 0 and the length of doubly link.")
-	}
-
-	if index == 0 {
-		link.InsertAtHead(value)
-		return nil
-	}
-
-	if index == size {
-		link.InsertAtTail(value)
-		return nil
-	}
-
-	i := 0
-	current := link.Head
-
-	for current != nil {
-		if i == index-1 {
-			newNode := datastructure.NewLinkNode(value)
-			newNode.Next = current.Next
-			newNode.Pre = current
-
-			current.Next = newNode
-			link.length++
-
-			return nil
-		}
-		i++
-		current = current.Next
-	}
-
-	return errors.New("doubly link list no exist")
-}
-
-// DeleteAtHead delete value in doubly linklist at head index
-func (link *DoublyLink[T]) DeleteAtHead() error {
-	if link.Head == nil {
-		return errors.New("doubly link list no exist")
-	}
-	current := link.Head
-	link.Head = current.Next
-	link.Head.Pre = nil
-	link.length--
-
-	return nil
-}
-
-// DeleteAtTail delete value in doubly linklist at tail index
-func (link *DoublyLink[T]) DeleteAtTail() error {
-	if link.Head == nil {
-		return errors.New("doubly link list no exist")
-	}
-	current := link.Head
-	if current.Next == nil {
-		return link.DeleteAtHead()
-	}
-
-	for current.Next.Next != nil {
-		current = current.Next
-	}
-
-	current.Next = nil
-	link.length--
-	return nil
-}
-
-// DeleteAt delete value in doubly linklist at index
-func (link *DoublyLink[T]) DeleteAt(index int) error {
-	if link.Head == nil {
-		return errors.New("doubly link list no exist")
-	}
-	current := link.Head
-	if current.Next == nil || index == 0 {
-		return link.DeleteAtHead()
-	}
-
-	if index == link.length-1 {
-		return link.DeleteAtTail()
-	}
-
-	if index < 0 || index > link.length-1 {
-		return errors.New("param index should between 0 and link size -1.")
-	}
-
-	i := 0
-	for current != nil {
-		if i == index-1 {
-			current.Next = current.Next.Next
-			link.length--
-			return nil
-		}
-		i++
-		current = current.Next
-	}
-
-	return errors.New("delete error")
-}
-
-// Reverse the linked list
-func (link *DoublyLink[T]) Reverse() {
-	current := link.Head
-	var temp *datastructure.LinkNode[T]
-
-	for current != nil {
-		temp = current.Pre
-		current.Pre = current.Next
-		current.Next = temp
-		current = current.Pre
-	}
-
-	if temp != nil {
-		link.Head = temp.Pre
-	}
-}
-
-// GetMiddleNode return node at middle index of linked list
-func (link *DoublyLink[T]) GetMiddleNode() *datastructure.LinkNode[T] {
-	if link.Head == nil {
-		return nil
-	}
-	if link.Head.Next == nil {
-		return link.Head
-	}
-	fast := link.Head
-	slow := link.Head
-
-	for fast != nil {
-		fast = fast.Next
-
-		if fast != nil {
-			fast = fast.Next
-			slow = slow.Next
-		} else {
-			return slow
-		}
-	}
-	return slow
-}
-
-// Size return the count of doubly linked list
-func (link *DoublyLink[T]) Size() int {
-	return link.length
-}
-
-// Values return slice of all doubly linklist node value
-func (link *DoublyLink[T]) Values() []T {
-	res := []T{}
-	current := link.Head
-	for current != nil {
-		res = append(res, current.Value)
-		current = current.Next
-	}
-	return res
-}
-
-// Print all nodes info of a linked list
-func (link *DoublyLink[T]) Print() {
-	current := link.Head
-	info := "[ "
-	for current != nil {
-		info += fmt.Sprintf("%+v, ", current)
-		current = current.Next
-	}
-	info += " ]"
-	fmt.Println(info)
-}
-
-// IsEmpty checks if link is empty or not
-func (link *DoublyLink[T]) IsEmpty() bool {
-	return link.length == 0
-}
-
-// Clear checks if link is empty or not
-func (link *DoublyLink[T]) Clear() {
-	link.Head = nil
-	link.length = 0
-}
--- a/datastructure/link/doublylink_test.go
+++ b/datastructure/link/doublylink_test.go
@@ -1,179 +0,0 @@
-package datastructure
-
-import (
-	"testing"
-
-	"github.com/duke-git/lancet/v2/internal"
-)
-
-func TestDoublyLink_InsertAtFirst(t *testing.T) {
-	assert := internal.NewAssert(t, "TestDoublyLink_InsertAtFirst")
-
-	link := NewDoublyLink[int]()
-	link.InsertAtHead(1)
-	link.InsertAtHead(2)
-	link.InsertAtHead(3)
-	link.Print()
-
-	expected := []int{3, 2, 1}
-	values := link.Values()
-
-	assert.Equal(expected, values)
-}
-
-func TestDoublyLink_InsertAtTail(t *testing.T) {
-	assert := internal.NewAssert(t, "TestDoublyLink_InsertAtTail")
-
-	link := NewDoublyLink[int]()
-	link.InsertAtTail(1)
-	link.InsertAtTail(2)
-	link.InsertAtTail(3)
-	link.Print()
-
-	expected := []int{1, 2, 3}
-	values := link.Values()
-
-	assert.Equal(expected, values)
-}
-
-func TestDoublyLink_InsertAt(t *testing.T) {
-	assert := internal.NewAssert(t, "TestDoublyLink_InsertAt")
-
-	link := NewDoublyLink[int]()
-
-	err := link.InsertAt(1, 1)
-	assert.IsNotNil(err)
-
-	link.InsertAt(0, 1)
-	link.InsertAt(1, 2)
-	link.InsertAt(2, 4)
-	link.InsertAt(2, 3)
-
-	link.Print()
-
-	expected := []int{1, 2, 3, 4}
-	values := link.Values()
-
-	assert.Equal(expected, values)
-
-}
-
-func TestDoublyLink_DeleteAtHead(t *testing.T) {
-	assert := internal.NewAssert(t, "TestDoublyLink_DeleteAtHead")
-
-	link := NewDoublyLink[int]()
-	err := link.DeleteAtHead()
-	assert.IsNotNil(err)
-
-	link.InsertAtTail(1)
-	link.InsertAtTail(2)
-	link.InsertAtTail(3)
-	link.InsertAtTail(4)
-
-	link.DeleteAtHead()
-	link.Print()
-
-	expected := []int{2, 3, 4}
-	values := link.Values()
-
-	assert.Equal(expected, values)
-}
-
-func TestDoublyLink_DeleteAtTail(t *testing.T) {
-	assert := internal.NewAssert(t, "TestDoublyLink_DeleteAtTail")
-
-	link := NewDoublyLink[int]()
-	err := link.DeleteAtTail()
-	assert.IsNotNil(err)
-
-	link.InsertAtTail(1)
-	link.InsertAtTail(2)
-	link.InsertAtTail(3)
-	link.InsertAtTail(4)
-
-	link.DeleteAtTail()
-	link.Print()
-
-	expected := []int{1, 2, 3}
-	values := link.Values()
-
-	assert.Equal(expected, values)
-}
-
-func TestDoublyLink_DeleteAt(t *testing.T) {
-	assert := internal.NewAssert(t, "TestDoublyLink_DeleteAt")
-
-	link := NewDoublyLink[int]()
-	err := link.DeleteAt(0)
-	assert.IsNotNil(err)
-
-	link.InsertAtTail(1)
-	link.InsertAtTail(2)
-	link.InsertAtTail(3)
-	link.InsertAtTail(4)
-	link.InsertAtTail(5)
-
-	err = link.DeleteAt(5)
-	assert.IsNotNil(err)
-
-	err = link.DeleteAt(0)
-	assert.IsNil(err)
-	assert.Equal([]int{2, 3, 4, 5}, link.Values())
-
-	link.DeleteAt(3)
-	assert.Equal([]int{2, 3, 4}, link.Values())
-
-	link.DeleteAt(1)
-	assert.Equal(2, link.Size())
-	assert.Equal([]int{2, 4}, link.Values())
-}
-
-func TestDoublyLink_Reverse(t *testing.T) {
-	assert := internal.NewAssert(t, "TestDoublyLink_Reverse")
-
-	link := NewDoublyLink[int]()
-	link.InsertAtTail(1)
-	link.InsertAtTail(2)
-	link.InsertAtTail(3)
-	link.InsertAtTail(4)
-
-	link.Reverse()
-	link.Print()
-	assert.Equal([]int{4, 3, 2, 1}, link.Values())
-}
-
-func TestDoublyLink_GetMiddleNode(t *testing.T) {
-	assert := internal.NewAssert(t, "TestDoublyLink_GetMiddleNode")
-
-	link := NewDoublyLink[int]()
-	link.InsertAtTail(1)
-	link.InsertAtTail(2)
-	link.InsertAtTail(3)
-	link.InsertAtTail(4)
-
-	middle1 := link.GetMiddleNode()
-	assert.Equal(3, middle1.Value)
-
-	link.InsertAtTail(5)
-	link.InsertAtTail(6)
-	link.InsertAtTail(7)
-	middle2 := link.GetMiddleNode()
-	assert.Equal(4, middle2.Value)
-}
-
-func TestDoublyLink_Clear(t *testing.T) {
-	assert := internal.NewAssert(t, "TestDoublyLink_Clear")
-
-	link := NewDoublyLink[int]()
-
-	assert.Equal(true, link.IsEmpty())
-	assert.Equal(0, link.Size())
-
-	link.InsertAtTail(1)
-	assert.Equal(false, link.IsEmpty())
-	assert.Equal(1, link.Size())
-
-	link.Clear()
-	assert.Equal(true, link.IsEmpty())
-	assert.Equal(0, link.Size())
-}
--- a/datastructure/link/singlylink.go
+++ b/datastructure/link/singlylink.go
@@ -1,224 +0,0 @@
-package datastructure
-
-import (
-	"errors"
-	"fmt"
-
-	"github.com/duke-git/lancet/v2/datastructure"
-)
-
-// SinglyLink is a linked list. Whose node has a Value generics and Next pointer points to a next node of the link.
-type SinglyLink[T any] struct {
-	Head   *datastructure.LinkNode[T]
-	length int
-}
-
-// NewSinglyLink return *SinglyLink instance
-func NewSinglyLink[T any]() *SinglyLink[T] {
-	return &SinglyLink[T]{Head: nil}
-}
-
-// InsertAtHead insert value into singly linklist at head index
-func (link *SinglyLink[T]) InsertAtHead(value T) {
-	newNode := datastructure.NewLinkNode(value)
-	newNode.Next = link.Head
-	link.Head = newNode
-	link.length++
-}
-
-// InsertAtTail insert value into singly linklist at tail index
-func (link *SinglyLink[T]) InsertAtTail(value T) {
-	current := link.Head
-	if current == nil {
-		link.InsertAtHead(value)
-		return
-	}
-
-	for current.Next != nil {
-		current = current.Next
-	}
-
-	newNode := datastructure.NewLinkNode(value)
-	newNode.Next = nil
-	current.Next = newNode
-
-	link.length++
-}
-
-// InsertAt insert value into singly linklist at index
-func (link *SinglyLink[T]) InsertAt(index int, value T) error {
-	size := link.length
-	if index < 0 || index > size {
-		return errors.New("param index should between 0 and the length of singly link.")
-	}
-
-	if index == 0 {
-		link.InsertAtHead(value)
-		return nil
-	}
-
-	if index == size {
-		link.InsertAtTail(value)
-		return nil
-	}
-
-	i := 0
-	current := link.Head
-
-	for current != nil {
-		if i == index-1 {
-			newNode := datastructure.NewLinkNode(value)
-			newNode.Next = current.Next
-			current.Next = newNode
-			link.length++
-
-			return nil
-		}
-		i++
-		current = current.Next
-	}
-
-	return errors.New("singly link list no exist")
-}
-
-// DeleteAtHead delete value in singly linklist at head index
-func (link *SinglyLink[T]) DeleteAtHead() error {
-	if link.Head == nil {
-		return errors.New("singly link list no exist")
-	}
-	current := link.Head
-	link.Head = current.Next
-	link.length--
-
-	return nil
-}
-
-// DeleteAtTail delete value in singly linklist at tail index
-func (link *SinglyLink[T]) DeleteAtTail() error {
-	if link.Head == nil {
-		return errors.New("singly link list no exist")
-	}
-	current := link.Head
-	if current.Next == nil {
-		return link.DeleteAtHead()
-	}
-
-	for current.Next.Next != nil {
-		current = current.Next
-	}
-
-	current.Next = nil
-	link.length--
-	return nil
-}
-
-// DeleteAt delete value in singly linklist at index
-func (link *SinglyLink[T]) DeleteAt(index int) error {
-	if link.Head == nil {
-		return errors.New("singly link list no exist")
-	}
-	current := link.Head
-	if current.Next == nil || index == 0 {
-		return link.DeleteAtHead()
-	}
-
-	if index == link.length-1 {
-		return link.DeleteAtTail()
-	}
-
-	if index < 0 || index > link.length-1 {
-		return errors.New("param index should between 0 and link size -1.")
-	}
-
-	i := 0
-	for current != nil {
-		if i == index-1 {
-			current.Next = current.Next.Next
-			link.length--
-			return nil
-		}
-		i++
-		current = current.Next
-	}
-
-	return errors.New("delete error")
-}
-
-// Reverse the linked list
-func (link *SinglyLink[T]) Reverse() {
-	var pre, next *datastructure.LinkNode[T]
-
-	current := link.Head
-
-	for current != nil {
-		next = current.Next
-		current.Next = pre
-		pre = current
-		current = next
-	}
-
-	link.Head = pre
-}
-
-// GetMiddleNode return node at middle index of linked list
-func (link *SinglyLink[T]) GetMiddleNode() *datastructure.LinkNode[T] {
-	if link.Head == nil {
-		return nil
-	}
-	if link.Head.Next == nil {
-		return link.Head
-	}
-	fast := link.Head
-	slow := link.Head
-
-	for fast != nil {
-		fast = fast.Next
-
-		if fast != nil {
-			fast = fast.Next
-			slow = slow.Next
-		} else {
-			return slow
-		}
-	}
-	return slow
-}
-
-// Size return the count of singly linked list
-func (link *SinglyLink[T]) Size() int {
-	return link.length
-}
-
-// Values return slice of all singly linklist node value
-func (link *SinglyLink[T]) Values() []T {
-	res := []T{}
-	current := link.Head
-	for current != nil {
-		res = append(res, current.Value)
-		current = current.Next
-	}
-	return res
-}
-
-// IsEmpty checks if link is empty or not
-func (link *SinglyLink[T]) IsEmpty() bool {
-	return link.length == 0
-}
-
-// Clear checks if link is empty or not
-func (link *SinglyLink[T]) Clear() {
-	link.Head = nil
-	link.length = 0
-}
-
-// Print all nodes info of a linked list
-func (link *SinglyLink[T]) Print() {
-	current := link.Head
-	info := "[ "
-	for current != nil {
-		info += fmt.Sprintf("%+v, ", current)
-		current = current.Next
-	}
-	info += " ]"
-	fmt.Println(info)
-}
--- a/datastructure/link/singlylink_test.go
+++ b/datastructure/link/singlylink_test.go
@@ -1,190 +0,0 @@
-package datastructure
-
-import (
-	"testing"
-
-	"github.com/duke-git/lancet/v2/internal"
-)
-
-func TestSinglyLink_InsertAtFirst(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSinglyLink_InsertAtFirst")
-
-	link := NewSinglyLink[int]()
-	link.InsertAtHead(1)
-	link.InsertAtHead(2)
-	link.InsertAtHead(3)
-	link.Print()
-
-	expected := []int{3, 2, 1}
-	values := link.Values()
-
-	assert.Equal(expected, values)
-}
-
-func TestSinglyLink_InsertAtTail(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSinglyLink_InsertAtTail")
-
-	link := NewSinglyLink[int]()
-	link.InsertAtTail(1)
-	link.InsertAtTail(2)
-	link.InsertAtTail(3)
-	link.Print()
-
-	expected := []int{1, 2, 3}
-	values := link.Values()
-
-	assert.Equal(expected, values)
-}
-
-func TestSinglyLink_InsertAt(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSinglyLink_InsertAt")
-
-	link := NewSinglyLink[int]()
-
-	err := link.InsertAt(1, 1)
-	assert.IsNotNil(err)
-
-	err = link.InsertAt(0, 1)
-	if err != nil {
-		t.FailNow()
-	}
-	err = link.InsertAt(1, 2)
-	if err != nil {
-		t.FailNow()
-	}
-	err = link.InsertAt(2, 4)
-	if err != nil {
-		t.FailNow()
-	}
-	err = link.InsertAt(2, 3)
-	if err != nil {
-		t.FailNow()
-	}
-
-	link.Print()
-
-	expected := []int{1, 2, 3, 4}
-	values := link.Values()
-
-	assert.Equal(expected, values)
-}
-
-func TestSinglyLink_DeleteAtHead(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSinglyLink_DeleteAtHead")
-
-	link := NewSinglyLink[int]()
-	err := link.DeleteAtHead()
-	assert.IsNotNil(err)
-
-	link.InsertAtTail(1)
-	link.InsertAtTail(2)
-	link.InsertAtTail(3)
-	link.InsertAtTail(4)
-
-	link.DeleteAtHead()
-	link.Print()
-
-	expected := []int{2, 3, 4}
-	values := link.Values()
-
-	assert.Equal(expected, values)
-}
-
-func TestSinglyLink_DeleteAtTail(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSinglyLink_DeleteAtTail")
-
-	link := NewSinglyLink[int]()
-	err := link.DeleteAtTail()
-	assert.IsNotNil(err)
-
-	link.InsertAtTail(1)
-	link.InsertAtTail(2)
-	link.InsertAtTail(3)
-	link.InsertAtTail(4)
-
-	link.DeleteAtTail()
-	link.Print()
-
-	expected := []int{1, 2, 3}
-	values := link.Values()
-
-	assert.Equal(expected, values)
-}
-
-func TestSinglyLink_DeleteAt(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSinglyLink_DeleteAt")
-
-	link := NewSinglyLink[int]()
-	err := link.DeleteAt(0)
-	assert.IsNotNil(err)
-
-	link.InsertAtTail(1)
-	link.InsertAtTail(2)
-	link.InsertAtTail(3)
-	link.InsertAtTail(4)
-	link.InsertAtTail(5)
-
-	err = link.DeleteAt(5)
-	assert.IsNotNil(err)
-
-	err = link.DeleteAt(0)
-	assert.IsNil(err)
-	assert.Equal([]int{2, 3, 4, 5}, link.Values())
-
-	link.DeleteAt(3)
-	assert.Equal([]int{2, 3, 4}, link.Values())
-
-	link.DeleteAt(1)
-	assert.Equal(2, link.Size())
-	assert.Equal([]int{2, 4}, link.Values())
-}
-
-func TestSinglyLink_Reverse(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSinglyLink_Reverse")
-
-	link := NewSinglyLink[int]()
-	link.InsertAtTail(1)
-	link.InsertAtTail(2)
-	link.InsertAtTail(3)
-	link.InsertAtTail(4)
-
-	link.Reverse()
-	link.Print()
-	assert.Equal([]int{4, 3, 2, 1}, link.Values())
-}
-
-func TestSinglyLink_GetMiddleNode(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSinglyLink_GetMiddleNode")
-
-	link := NewSinglyLink[int]()
-	link.InsertAtTail(1)
-	link.InsertAtTail(2)
-	link.InsertAtTail(3)
-	link.InsertAtTail(4)
-
-	middle1 := link.GetMiddleNode()
-	assert.Equal(3, middle1.Value)
-
-	link.InsertAtTail(5)
-	link.InsertAtTail(6)
-	link.InsertAtTail(7)
-	middle2 := link.GetMiddleNode()
-	assert.Equal(4, middle2.Value)
-}
-
-func TestSinglyLink_Clear(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSinglyLink_Clear")
-
-	link := NewSinglyLink[int]()
-
-	assert.Equal(true, link.IsEmpty())
-	assert.Equal(0, link.Size())
-
-	link.InsertAtTail(1)
-	assert.Equal(false, link.IsEmpty())
-	assert.Equal(1, link.Size())
-
-	link.Clear()
-	assert.Equal(true, link.IsEmpty())
-	assert.Equal(0, link.Size())
-}
--- a/datastructure/list/list.go
+++ b/datastructure/list/list.go
@@ -1,245 +0,0 @@
-// Copyright 2021 dudaodong@gmail.com. All rights reserved.
-// Use of this source code is governed by MIT license
-
-// Package datastructure implements some data structure. eg. list, linklist, stack, queue, tree, graph.
-package datastructure
-
-import (
-	"reflect"
-)
-
-// List is a linear table, implemented with slice
-type List[T any] struct {
-	data []T
-}
-
-// NewList return a pointer of List
-func NewList[T any](data []T) *List[T] {
-	return &List[T]{data: data}
-}
-
-// Data return list data
-func (l *List[T]) Data() []T {
-	return l.data
-}
-
-// ValueOf return the value pointer at index of list data.
-func (l *List[T]) ValueOf(index int) (*T, bool) {
-	if index < 0 || index >= len(l.data) {
-		return nil, false
-	}
-	return &l.data[index], true
-}
-
-// IndexOf reture the index of value. if not found return -1
-func (l *List[T]) IndexOf(value T) int {
-	index := -1
-	data := l.data
-	for i, v := range data {
-		if reflect.DeepEqual(v, value) {
-			index = i
-			break
-		}
-	}
-	return index
-}
-
-// Contain checks if the value in the list or not
-func (l *List[T]) Contain(value T) bool {
-	data := l.data
-	for _, v := range data {
-		if reflect.DeepEqual(v, value) {
-			return true
-		}
-	}
-	return false
-}
-
-// Push append value to the list data
-func (l *List[T]) Push(value T) {
-	l.data = append(l.data, value)
-}
-
-// InsertAtFirst insert value into list at first index
-func (l *List[T]) InsertAtFirst(value T) {
-	l.InsertAt(0, value)
-}
-
-// InsertAtLast insert value into list at last index
-func (l *List[T]) InsertAtLast(value T) {
-	l.InsertAt(len(l.data), value)
-}
-
-// InsertAt insert value into list at index
-func (l *List[T]) InsertAt(index int, value T) {
-	data := l.data
-	size := len(data)
-
-	if index < 0 || index > size {
-		return
-	}
-	l.data = append(data[:index], append([]T{value}, data[index:]...)...)
-}
-
-// PopFirst delete the first value of list and return it
-func (l *List[T]) PopFirst() (*T, bool) {
-	if len(l.data) == 0 {
-		return nil, false
-	}
-
-	v := l.data[0]
-	l.DeleteAt(0)
-
-	return &v, true
-}
-
-// PopLast delete the last value of list and return it
-func (l *List[T]) PopLast() (*T, bool) {
-	size := len(l.data)
-	if size == 0 {
-		return nil, false
-	}
-
-	v := l.data[size-1]
-	l.DeleteAt(size - 1)
-
-	return &v, true
-}
-
-// DeleteAt delete the value of list at index
-func (l *List[T]) DeleteAt(index int) {
-	data := l.data
-	size := len(data)
-	if index < 0 || index > size-1 {
-		return
-	}
-	if index == size-1 {
-		data = append(data[:index])
-	} else {
-		data = append(data[:index], data[index+1:]...)
-	}
-	l.data = data
-}
-
-// UpdateAt update value of list at index, index shoud between 0 and list size -1
-func (l *List[T]) UpdateAt(index int, value T) {
-	data := l.data
-	size := len(data)
-
-	if index < 0 || index >= size {
-		return
-	}
-	l.data = append(data[:index], append([]T{value}, data[index+1:]...)...)
-}
-
-// Equtal compare list to other list, use reflect.DeepEqual
-func (l *List[T]) Equtal(other *List[T]) bool {
-	if len(l.data) != len(other.data) {
-		return false
-	}
-
-	for i := 0; i < len(l.data); i++ {
-		if !reflect.DeepEqual(l.data[i], other.data[i]) {
-			return false
-		}
-	}
-
-	return true
-}
-
-// IsEmpty check if the list is empty or not
-func (l *List[T]) IsEmpty() bool {
-	return len(l.data) == 0
-}
-
-// Clear the data of list
-func (l *List[T]) Clear() {
-	l.data = make([]T, 0, 0)
-}
-
-// Clone return a copy of list
-func (l *List[T]) Clone() *List[T] {
-	cl := NewList(make([]T, len(l.data)))
-	copy(cl.data, l.data)
-
-	return cl
-}
-
-// Merge two list, return new list, don't change original list
-func (l *List[T]) Merge(other *List[T]) *List[T] {
-	l1, l2 := len(l.data), len(other.data)
-	ml := NewList(make([]T, l1+l2, l1+l2))
-
-	data := append([]T{}, append(l.data, other.data...)...)
-	ml.data = data
-
-	return ml
-}
-
-// Size return number of list data items
-func (l *List[T]) Size() int {
-	return len(l.data)
-}
-
-// Swap the value of index i and j in list
-func (l *List[T]) Swap(i, j int) {
-	size := len(l.data)
-	if i < 0 || i >= size || j < 0 || j >= size {
-		return
-	}
-	l.data[i], l.data[j] = l.data[j], l.data[i]
-}
-
-// Reverse the item order of list
-func (l *List[T]) Reverse() {
-	for i, j := 0, len(l.data)-1; i < j; i, j = i+1, j-1 {
-		l.data[i], l.data[j] = l.data[j], l.data[i]
-	}
-}
-
-// Unique remove duplicate items in list
-func (l *List[T]) Unique() {
-	data := l.data
-	size := len(data)
-
-	uniqueData := make([]T, 0, 0)
-	for i := 0; i < size; i++ {
-		value := data[i]
-		skip := true
-		for _, v := range uniqueData {
-			if reflect.DeepEqual(value, v) {
-				skip = false
-				break
-			}
-		}
-		if skip {
-			uniqueData = append(uniqueData, value)
-		}
-	}
-
-	l.data = uniqueData
-}
-
-// Union creates a new list contain all element in list l and other, remove duplicate element.
-func (l *List[T]) Union(other *List[T]) *List[T] {
-	res := NewList([]T{})
-
-	res.data = append(res.data, l.data...)
-	res.data = append(res.data, other.data...)
-	res.Unique()
-
-	return res
-}
-
-// Intersection creates a new list whose element both be contained in list l and other
-func (l *List[T]) Intersection(other *List[T]) *List[T] {
-	res := NewList(make([]T, 0, 0))
-
-	for _, v := range l.data {
-		if other.Contain(v) {
-			res.data = append(res.data, v)
-		}
-	}
-
-	return res
-}
--- a/datastructure/list/list_test.go
+++ b/datastructure/list/list_test.go
@@ -1,272 +0,0 @@
-package datastructure
-
-import (
-	"testing"
-
-	"github.com/duke-git/lancet/v2/internal"
-)
-
-func TestListData(t *testing.T) {
-	assert := internal.NewAssert(t, "TestListData")
-
-	list := NewList([]int{1, 2, 3})
-	assert.Equal([]int{1, 2, 3}, list.Data())
-}
-
-func TestValueOf(t *testing.T) {
-	assert := internal.NewAssert(t, "TestValueOf")
-
-	list := NewList([]int{1, 2, 3})
-	v, ok := list.ValueOf(0)
-	assert.Equal(1, *v)
-	assert.Equal(true, ok)
-
-	_, ok = list.ValueOf(3)
-	assert.Equal(false, ok)
-}
-
-func TestIndexOf(t *testing.T) {
-	assert := internal.NewAssert(t, "TestIndexOf")
-
-	list := NewList([]int{1, 2, 3})
-	i := list.IndexOf(1)
-	assert.Equal(0, i)
-
-	i = list.IndexOf(4)
-	assert.Equal(-1, i)
-}
-
-func TestContain(t *testing.T) {
-	assert := internal.NewAssert(t, "TestContain")
-
-	list := NewList([]int{1, 2, 3})
-	assert.Equal(true, list.Contain(1))
-	assert.Equal(false, list.Contain(0))
-}
-
-func TestPush(t *testing.T) {
-	assert := internal.NewAssert(t, "TestPush")
-
-	list := NewList([]int{1, 2, 3})
-	list.Push(4)
-
-	assert.Equal([]int{1, 2, 3, 4}, list.Data())
-}
-
-func TestInsertAtFirst(t *testing.T) {
-	assert := internal.NewAssert(t, "TestInsertAtFirst")
-
-	list := NewList([]int{1, 2, 3})
-	list.InsertAtFirst(0)
-
-	assert.Equal([]int{0, 1, 2, 3}, list.Data())
-}
-
-func TestInsertAtLast(t *testing.T) {
-	assert := internal.NewAssert(t, "TestInsertAtLast")
-
-	list := NewList([]int{1, 2, 3})
-	list.InsertAtLast(4)
-
-	assert.Equal([]int{1, 2, 3, 4}, list.Data())
-}
-
-func TestInsertAt(t *testing.T) {
-	assert := internal.NewAssert(t, "TestInsertAt")
-
-	list := NewList([]int{1, 2, 3})
-
-	list.InsertAt(-1, 0)
-	assert.Equal([]int{1, 2, 3}, list.Data())
-
-	list.InsertAt(4, 0)
-	assert.Equal([]int{1, 2, 3}, list.Data())
-
-	list.InsertAt(0, 0)
-	assert.Equal([]int{0, 1, 2, 3}, list.Data())
-
-	list.InsertAt(4, 4)
-	assert.Equal([]int{0, 1, 2, 3, 4}, list.Data())
-}
-
-func TestPopFirst(t *testing.T) {
-	assert := internal.NewAssert(t, "TestPopFirst")
-
-	list := NewList([]int{1, 2, 3})
-	v, ok := list.PopFirst()
-	assert.Equal(1, *v)
-	assert.Equal(true, ok)
-	assert.Equal([]int{2, 3}, list.Data())
-
-	list2 := NewList([]int{})
-	_, ok = list2.PopFirst()
-	assert.Equal(false, ok)
-	assert.Equal([]int{}, list2.Data())
-}
-
-func TestPopLast(t *testing.T) {
-	assert := internal.NewAssert(t, "TestPopLast")
-
-	list := NewList([]int{1, 2, 3})
-	v, ok := list.PopLast()
-	assert.Equal(3, *v)
-	assert.Equal(true, ok)
-	assert.Equal([]int{1, 2}, list.Data())
-
-	list2 := NewList([]int{})
-	_, ok = list2.PopLast()
-	assert.Equal(false, ok)
-	assert.Equal([]int{}, list2.Data())
-}
-
-func TestDeleteAt(t *testing.T) {
-	assert := internal.NewAssert(t, "TestDeleteAt")
-
-	list := NewList([]int{1, 2, 3, 4})
-
-	list.DeleteAt(-1)
-	assert.Equal([]int{1, 2, 3, 4}, list.Data())
-
-	list.DeleteAt(4)
-	assert.Equal([]int{1, 2, 3, 4}, list.Data())
-
-	list.DeleteAt(0)
-	assert.Equal([]int{2, 3, 4}, list.Data())
-
-	list.DeleteAt(2)
-	assert.Equal([]int{2, 3}, list.Data())
-}
-
-func TestUpdateAt(t *testing.T) {
-	assert := internal.NewAssert(t, "TestUpdateAt")
-
-	list := NewList([]int{1, 2, 3, 4})
-
-	list.UpdateAt(-1, 0)
-	assert.Equal([]int{1, 2, 3, 4}, list.Data())
-
-	list.UpdateAt(4, 0)
-	assert.Equal([]int{1, 2, 3, 4}, list.Data())
-
-	list.UpdateAt(0, 5)
-	assert.Equal([]int{5, 2, 3, 4}, list.Data())
-
-	list.UpdateAt(3, 1)
-	assert.Equal([]int{5, 2, 3, 1}, list.Data())
-}
-
-func TestEqutal(t *testing.T) {
-	assert := internal.NewAssert(t, "TestEqutal")
-
-	list1 := NewList([]int{1, 2, 3, 4})
-	list2 := NewList([]int{1, 2, 3, 4})
-	list3 := NewList([]int{1, 2, 3})
-
-	assert.Equal(true, list1.Equtal(list2))
-	assert.Equal(false, list1.Equtal(list3))
-}
-
-func TestIsEmpty(t *testing.T) {
-	assert := internal.NewAssert(t, "TestIsEmpty")
-
-	list1 := NewList([]int{1, 2, 3, 4})
-	list2 := NewList([]int{})
-
-	assert.Equal(false, list1.IsEmpty())
-	assert.Equal(true, list2.IsEmpty())
-}
-
-func TestIsClear(t *testing.T) {
-	assert := internal.NewAssert(t, "TestIsClear")
-
-	list1 := NewList([]int{1, 2, 3, 4})
-	list1.Clear()
-	empty := NewList([]int{})
-
-	assert.Equal(empty, list1)
-}
-
-func TestClone(t *testing.T) {
-	assert := internal.NewAssert(t, "TestClone")
-
-	list1 := NewList([]int{1, 2, 3, 4})
-	list2 := list1.Clone()
-
-	assert.Equal(true, list1.Equtal(list2))
-}
-
-func TestMerge(t *testing.T) {
-	assert := internal.NewAssert(t, "TestMerge")
-
-	list1 := NewList([]int{1, 2, 3, 4})
-	list2 := NewList([]int{4, 5, 6})
-	expected := NewList([]int{1, 2, 3, 4, 4, 5, 6})
-
-	list3 := list1.Merge(list2)
-	assert.Equal(true, expected.Equtal(list3))
-}
-
-func TestSize(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSize")
-
-	list := NewList([]int{1, 2, 3, 4})
-	empty := NewList([]int{})
-
-	assert.Equal(4, list.Size())
-	assert.Equal(0, empty.Size())
-}
-
-func TestSwap(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSwap")
-
-	list := NewList([]int{1, 2, 3, 4})
-	expected := NewList([]int{4, 2, 3, 1})
-
-	list.Swap(0, 3)
-
-	assert.Equal(true, expected.Equtal(list))
-}
-
-func TestReverse(t *testing.T) {
-	assert := internal.NewAssert(t, "TestReverse")
-
-	list := NewList([]int{1, 2, 3, 4})
-	expected := NewList([]int{4, 3, 2, 1})
-
-	list.Reverse()
-
-	assert.Equal(true, expected.Equtal(list))
-}
-
-func TestUnique(t *testing.T) {
-	assert := internal.NewAssert(t, "TestUnique")
-
-	list := NewList([]int{1, 2, 2, 3, 4})
-	expected := NewList([]int{1, 2, 3, 4})
-
-	list.Unique()
-
-	assert.Equal(true, expected.Equtal(list))
-}
-
-func TestUnion(t *testing.T) {
-	assert := internal.NewAssert(t, "TestUnion")
-
-	list1 := NewList([]int{1, 2, 3, 4})
-	list2 := NewList([]int{4, 5, 6})
-	expected := NewList([]int{1, 2, 3, 4, 5, 6})
-
-	list3 := list1.Union(list2)
-	assert.Equal(true, expected.Equtal(list3))
-}
-
-func TestIntersection(t *testing.T) {
-	assert := internal.NewAssert(t, "TestIntersection")
-
-	list1 := NewList([]int{1, 2, 3, 4})
-	list2 := NewList([]int{4, 5, 6})
-	expected := NewList([]int{4})
-
-	list3 := list1.Intersection(list2)
-	assert.Equal(true, expected.Equtal(list3))
-}
--- a/datastructure/node.go
+++ b/datastructure/node.go
@@ -1,51 +0,0 @@
-// Copyright 2021 dudaodong@gmail.com. All rights reserved.
-// Use of this source code is governed by MIT license
-
-// Package datastructure implements some data structure. eg. list, linklist, stack, queue, tree, graph.
-package datastructure
-
-// LinkNode is a linkedlist node, which have a Value and Pre points to previous node, Next points to a next node of the link.
-type LinkNode[T any] struct {
-	Value T
-	Pre   *LinkNode[T]
-	Next  *LinkNode[T]
-}
-
-// NewLinkNode return a LinkNode pointer
-func NewLinkNode[T any](value T) *LinkNode[T] {
-	return &LinkNode[T]{value, nil, nil}
-}
-
-// StackNode is a node in stack, which have a Value and Next pointer points to next node in the stack.
-type StackNode[T any] struct {
-	Value T
-	Next  *StackNode[T]
-}
-
-// NewStackNode return a StackNode pointer
-func NewStackNode[T any](value T) *StackNode[T] {
-	return &StackNode[T]{value, nil}
-}
-
-// QueueNode is a node in a queue, which have a Value and Next pointer points to next node in the queue.
-type QueueNode[T any] struct {
-	Value T
-	Next  *QueueNode[T]
-}
-
-// NewQueueNode return a QueueNode pointer
-func NewQueueNode[T any](value T) *QueueNode[T] {
-	return &QueueNode[T]{value, nil}
-}
-
-// TreeNode is node of tree
-type TreeNode[T any] struct {
-	Data  T
-	Left  *TreeNode[T]
-	Right *TreeNode[T]
-}
-
-// NewTreeNode return a TreeNode pointer
-func NewTreeNode[T any](data T) *TreeNode[T] {
-	return &TreeNode[T]{data, nil, nil}
-}
--- a/datastructure/queue/arrayqueue.go
+++ b/datastructure/queue/arrayqueue.go
@@ -1,92 +0,0 @@
-package datastructure
-
-import (
-	"errors"
-	"fmt"
-	"reflect"
-)
-
-// ArrayQueue implements queue with slice
-type ArrayQueue[T any] struct {
-	data   []T
-	length int
-}
-
-// NewArrayQueue return a empty ArrayQueue pointer
-func NewArrayQueue[T any](values ...T) *ArrayQueue[T] {
-	data := make([]T, len(values))
-	for i, v := range values {
-		data[i] = v
-	}
-	return &ArrayQueue[T]{data: data, length: len(values)}
-}
-
-// Data return queue data
-func (q *ArrayQueue[T]) Data() []T {
-	return q.data
-}
-
-// Size return length of queue data
-func (q *ArrayQueue[T]) Size() int {
-	return q.length
-}
-
-// IsEmpty checks if queue is empty or not
-func (q *ArrayQueue[T]) IsEmpty() bool {
-	return q.length == 0
-}
-
-// Front return front value of queue
-func (q *ArrayQueue[T]) Front() T {
-	return q.data[0]
-}
-
-// Back return back value of queue
-func (q *ArrayQueue[T]) Back() T {
-	return q.data[q.length-1]
-}
-
-// EnQueue put element into queue
-func (q *ArrayQueue[T]) EnQueue(value T) {
-	q.data = append(q.data, value)
-	q.length++
-}
-
-// DeQueue remove head element of queue and return it, if queue is empty, return nil and error
-func (q *ArrayQueue[T]) DeQueue() (*T, error) {
-	if q.IsEmpty() {
-		return nil, errors.New("queue is empty")
-	}
-
-	headItem := q.data[0]
-	q.data = q.data[1:]
-	q.length--
-
-	return &headItem, nil
-}
-
-// Clear the queue data
-func (q *ArrayQueue[T]) Clear() {
-	q.data = []T{}
-	q.length = 0
-}
-
-// Contain checks if the value is in queue or not
-func (q *ArrayQueue[T]) Contain(value T) bool {
-	for _, v := range q.data {
-		if reflect.DeepEqual(v, value) {
-			return true
-		}
-	}
-	return false
-}
-
-// Print queue data
-func (q *ArrayQueue[T]) Print() {
-	info := "["
-	for _, v := range q.data {
-		info += fmt.Sprintf("%+v, ", v)
-	}
-	info += "]"
-	fmt.Println(info)
-}
--- a/datastructure/queue/arrayqueue_test.go
+++ b/datastructure/queue/arrayqueue_test.go
@@ -1,90 +0,0 @@
-package datastructure
-
-import (
-	"testing"
-
-	"github.com/duke-git/lancet/v2/internal"
-)
-
-func TestArrayQueue_EnQueue(t *testing.T) {
-	assert := internal.NewAssert(t, "TestArrayQueue_EnQueue")
-
-	queue := NewArrayQueue[int]()
-	queue.EnQueue(1)
-	queue.EnQueue(2)
-	queue.EnQueue(3)
-
-	expected := []int{1, 2, 3}
-	data := queue.Data()
-	size := queue.Size()
-
-	queue.Print()
-
-	assert.Equal(expected, data)
-	assert.Equal(3, size)
-}
-
-func TestArrayQueue_DeQueue(t *testing.T) {
-	assert := internal.NewAssert(t, "TestArrayQueue_DeQueue")
-
-	queue := NewArrayQueue(1, 2, 3)
-
-	val, err := queue.DeQueue()
-	if err != nil {
-		t.Fail()
-	}
-
-	queue.Print()
-	assert.Equal(1, *val)
-
-	assert.Equal([]int{2, 3}, queue.Data())
-}
-
-func TestArrayQueue_Front(t *testing.T) {
-	assert := internal.NewAssert(t, "TestArrayQueue_Front")
-
-	queue := NewArrayQueue(1, 2, 3)
-	val := queue.Front()
-
-	queue.Print()
-
-	assert.Equal(1, val)
-	assert.Equal([]int{1, 2, 3}, queue.Data())
-}
-
-func TestArrayQueue_Back(t *testing.T) {
-	assert := internal.NewAssert(t, "TestArrayQueue_Back")
-
-	queue := NewArrayQueue(1, 2, 3)
-	val := queue.Back()
-
-	queue.Print()
-
-	assert.Equal(3, val)
-	assert.Equal([]int{1, 2, 3}, queue.Data())
-}
-
-func TestArrayQueue_Contain(t *testing.T) {
-	assert := internal.NewAssert(t, "TestArrayQueue_Contain")
-
-	queue := NewArrayQueue(1, 2, 3)
-
-	assert.Equal(true, queue.Contain(1))
-	assert.Equal(false, queue.Contain(4))
-}
-
-func TestArrayQueue_Clear(t *testing.T) {
-	assert := internal.NewAssert(t, "TestArrayQueue_Clear")
-
-	queue := NewArrayQueue[int]()
-	assert.Equal(true, queue.IsEmpty())
-	assert.Equal(0, queue.Size())
-
-	queue.EnQueue(1)
-	assert.Equal(false, queue.IsEmpty())
-	assert.Equal(1, queue.Size())
-
-	queue.Clear()
-	assert.Equal(true, queue.IsEmpty())
-	assert.Equal(0, queue.Size())
-}
--- a/datastructure/queue/circularqueue.go
+++ b/datastructure/queue/circularqueue.go
@@ -1,118 +0,0 @@
-package datastructure
-
-import (
-	"errors"
-	"fmt"
-	"reflect"
-)
-
-// CircularQueue implements circular queue with slice,
-// last index of CircularQueue don't contain value, so acturl capacity is size - 1
-type CircularQueue[T any] struct {
-	data  []T
-	front int
-	rear  int
-	size  int
-}
-
-// NewCircularQueue return a empty CircularQueue pointer
-func NewCircularQueue[T any](size int) *CircularQueue[T] {
-	data := make([]T, size)
-	return &CircularQueue[T]{data: data, front: 0, rear: 0, size: size}
-}
-
-// Data return queue data
-func (q *CircularQueue[T]) Data() []T {
-	data := []T{}
-
-	front := q.front
-	rear := q.rear
-	if front <= rear {
-		return q.data[front:rear]
-	}
-
-	data = append(data, q.data[front:]...)
-	data = append(data, q.data[0:rear]...)
-
-	return data
-}
-
-// Length return current data length of queue
-func (q *CircularQueue[T]) Length() int {
-	if q.size == 0 {
-		return 0
-	}
-	return (q.rear - q.front + q.size) % q.size
-}
-
-// IsEmpty checks if queue is empty or not
-func (q *CircularQueue[T]) IsEmpty() bool {
-	return q.front == q.rear
-}
-
-// IsFull checks if queue is full or not
-func (q *CircularQueue[T]) IsFull() bool {
-	return (q.rear+1)%q.size == q.front
-}
-
-// Front return front value of queue
-func (q *CircularQueue[T]) Front() T {
-	return q.data[q.front]
-}
-
-// Back return back value of queue
-func (q *CircularQueue[T]) Back() T {
-	if q.rear-1 >= 0 {
-		return q.data[q.rear-1]
-	}
-	return q.data[q.size-1]
-}
-
-// EnQueue put element into queue
-func (q *CircularQueue[T]) EnQueue(value T) error {
-	if q.IsFull() {
-		return errors.New("queue is full!")
-	}
-
-	q.data[q.rear] = value
-	q.rear = (q.rear + 1) % q.size
-
-	return nil
-}
-
-// DeQueue remove head element of queue and return it, if queue is empty, return nil and error
-func (q *CircularQueue[T]) DeQueue() (*T, error) {
-	if q.IsEmpty() {
-		return nil, errors.New("queue is empty")
-	}
-
-	headItem := q.data[q.front]
-	var t T
-	q.data[q.front] = t
-	q.front = (q.front + 1) % q.size
-
-	return &headItem, nil
-}
-
-// Clear the queue data
-func (q *CircularQueue[T]) Clear() {
-	q.data = []T{}
-	q.front = 0
-	q.rear = 0
-	q.size = 0
-}
-
-// Contain checks if the value is in queue or not
-func (q *CircularQueue[T]) Contain(value T) bool {
-	for _, v := range q.data {
-		if reflect.DeepEqual(v, value) {
-			return true
-		}
-	}
-	return false
-}
-
-// Print queue data
-func (q *CircularQueue[T]) Print() {
-	fmt.Printf("%+v\n", q)
-}
--- a/datastructure/queue/circularqueue_test.go
+++ b/datastructure/queue/circularqueue_test.go
@@ -1,148 +0,0 @@
-package datastructure
-
-import (
-	"testing"
-
-	"github.com/duke-git/lancet/v2/internal"
-)
-
-func TestCircularQueue_EnQueue(t *testing.T) {
-	assert := internal.NewAssert(t, "TestCircularQueue_EnQueue")
-
-	queue := NewCircularQueue[int](6)
-	queue.EnQueue(1)
-	queue.EnQueue(2)
-	queue.EnQueue(3)
-	queue.EnQueue(4)
-	queue.EnQueue(5)
-
-	queue.Print()
-	// assert.Equal([]int{1, 2, 3, 4, 5}, queue.Data())
-	assert.Equal(5, queue.Length())
-
-	err := queue.EnQueue(6)
-	assert.IsNotNil(err)
-}
-
-func TestCircularQueue_DeQueue(t *testing.T) {
-	assert := internal.NewAssert(t, "TestCircularQueue_DeQueue")
-
-	queue := NewCircularQueue[int](6)
-	assert.Equal(true, queue.IsEmpty())
-
-	queue.EnQueue(1)
-	queue.EnQueue(2)
-	queue.EnQueue(3)
-	queue.EnQueue(4)
-	queue.EnQueue(5)
-
-	val, err := queue.DeQueue()
-	assert.IsNil(err)
-
-	assert.Equal(1, *val)
-	assert.Equal(false, queue.IsFull())
-
-	val, _ = queue.DeQueue()
-	queue.Print()
-	assert.Equal(2, *val)
-
-	queue.EnQueue(6)
-	queue.Print()
-	assert.Equal(false, queue.IsFull())
-}
-
-func TestCircularQueue_Front(t *testing.T) {
-	assert := internal.NewAssert(t, "TestCircularQueue_Front")
-
-	queue := NewCircularQueue[int](6)
-	queue.EnQueue(1)
-	queue.EnQueue(2)
-	queue.EnQueue(3)
-	queue.EnQueue(4)
-	queue.EnQueue(5)
-
-	queue.Print()
-
-	queue.DeQueue()
-	queue.DeQueue()
-	queue.EnQueue(6)
-	queue.EnQueue(7)
-
-	queue.Print()
-
-	val := queue.Front()
-	assert.Equal(3, val)
-	assert.Equal(5, queue.Length())
-}
-
-func TestCircularQueue_Back(t *testing.T) {
-	assert := internal.NewAssert(t, "TestCircularQueue_Back")
-
-	queue := NewCircularQueue[int](6)
-	assert.Equal(true, queue.IsEmpty())
-
-	queue.EnQueue(1)
-	queue.EnQueue(2)
-	queue.EnQueue(3)
-	queue.EnQueue(4)
-	queue.EnQueue(5)
-
-	queue.Print()
-	assert.Equal(5, queue.Back())
-
-	queue.DeQueue()
-	queue.DeQueue()
-	queue.EnQueue(6)
-	queue.EnQueue(7)
-
-	queue.Print()
-	assert.Equal(7, queue.Back())
-}
-
-func TestCircularQueue_Contain(t *testing.T) {
-	assert := internal.NewAssert(t, "TestCircularQueue_Contain")
-
-	queue := NewCircularQueue[int](2)
-	queue.EnQueue(1)
-	assert.Equal(true, queue.Contain(1))
-	assert.Equal(false, queue.Contain(2))
-}
-
-func TestCircularQueue_Clear(t *testing.T) {
-	assert := internal.NewAssert(t, "TestCircularQueue_Clear")
-
-	queue := NewCircularQueue[int](3)
-	assert.Equal(true, queue.IsEmpty())
-	assert.Equal(0, queue.Length())
-
-	queue.EnQueue(1)
-	assert.Equal(false, queue.IsEmpty())
-	assert.Equal(1, queue.Length())
-
-	queue.Clear()
-	assert.Equal(true, queue.IsEmpty())
-	assert.Equal(0, queue.Length())
-}
-
-func TestCircularQueue_Data(t *testing.T) {
-	assert := internal.NewAssert(t, "TestCircularQueue_Data")
-
-	queue := NewCircularQueue[int](6)
-	queue.EnQueue(1)
-	queue.EnQueue(2)
-	queue.EnQueue(3)
-	queue.EnQueue(4)
-	queue.EnQueue(5)
-
-	queue.Print()
-	assert.Equal([]int{1, 2, 3, 4, 5}, queue.Data())
-
-	queue.DeQueue()
-	queue.DeQueue()
-	queue.EnQueue(6)
-	queue.EnQueue(7)
-
-	queue.Print()
-	assert.Equal([]int{3, 4, 5, 6, 7}, queue.Data())
-
-}
--- a/datastructure/queue/linkedqueue.go
+++ b/datastructure/queue/linkedqueue.go
@@ -1,104 +0,0 @@
-package datastructure
-
-import (
-	"errors"
-	"fmt"
-
-	"github.com/duke-git/lancet/v2/datastructure"
-)
-
-// LinkedQueue implements queue with link list
-type LinkedQueue[T any] struct {
-	head   *datastructure.QueueNode[T]
-	tail   *datastructure.QueueNode[T]
-	length int
-}
-
-// NewLinkedQueue return a empty LinkedQueue pointer
-func NewLinkedQueue[T any]() *LinkedQueue[T] {
-	return &LinkedQueue[T]{head: nil, tail: nil, length: 0}
-}
-
-// Data return queue data
-func (q *LinkedQueue[T]) Data() []T {
-	res := []T{}
-	current := q.head
-
-	for current != nil {
-		res = append(res, current.Value)
-		current = current.Next
-	}
-	return res
-}
-
-// Size return length of queue data
-func (q *LinkedQueue[T]) Size() int {
-	return q.length
-}
-
-// IsEmpty checks if queue is empty or not
-func (q *LinkedQueue[T]) IsEmpty() bool {
-	return q.length == 0
-}
-
-// EnQueue add element into queue
-func (q *LinkedQueue[T]) EnQueue(value T) {
-	newNode := datastructure.NewQueueNode(value)
-
-	if q.IsEmpty() {
-		q.head = newNode
-		q.tail = newNode
-	} else {
-		q.tail.Next = newNode
-		q.tail = newNode
-	}
-	q.length++
-}
-
-// DeQueue delete head element of queue then return it, if queue is empty, return nil and error
-func (q *LinkedQueue[T]) DeQueue() (*T, error) {
-	if q.IsEmpty() {
-		return nil, errors.New("queue is empty")
-	}
-
-	head := q.head
-	q.head = q.head.Next
-	q.length--
-
-	return &head.Value, nil
-}
-
-// Front return front value of queue
-func (q *LinkedQueue[T]) Front() (*T, error) {
-	if q.IsEmpty() {
-		return nil, errors.New("queue is empty")
-	}
-	return &q.head.Value, nil
-}
-
-// Back return back value of queue
-func (q *LinkedQueue[T]) Back() (*T, error) {
-	if q.IsEmpty() {
-		return nil, errors.New("queue is empty")
-	}
-	return &q.tail.Value, nil
-}
-
-// Clear clear the queue data
-func (q *LinkedQueue[T]) Clear() {
-	q.head = nil
-	q.tail = nil
-	q.length = 0
-}
-
-// Print all nodes info of queue link
-func (q *LinkedQueue[T]) Print() {
-	current := q.head
-	info := "[ "
-	for current != nil {
-		info += fmt.Sprintf("%+v, ", current)
-		current = current.Next
-	}
-	info += " ]"
-	fmt.Println(info)
-}
--- a/datastructure/queue/linkedqueue_test.go
+++ b/datastructure/queue/linkedqueue_test.go
@@ -1,84 +0,0 @@
-package datastructure
-
-import (
-	"testing"
-
-	"github.com/duke-git/lancet/v2/internal"
-)
-
-func TestLinkedQueue_EnQueue(t *testing.T) {
-	assert := internal.NewAssert(t, "TestLinkedQueue_EnQueue")
-
-	queue := NewLinkedQueue[int]()
-	queue.EnQueue(1)
-	queue.EnQueue(2)
-	queue.EnQueue(3)
-
-	queue.Print()
-
-	assert.Equal([]int{1, 2, 3}, queue.Data())
-	assert.Equal(3, queue.Size())
-}
-
-func TestLinkedQueue_DeQueue(t *testing.T) {
-	assert := internal.NewAssert(t, "TestLinkedQueue_DeQueue")
-
-	queue := NewLinkedQueue[int]()
-	queue.EnQueue(1)
-	queue.EnQueue(2)
-	queue.EnQueue(3)
-
-	val, _ := queue.DeQueue()
-
-	queue.Print()
-
-	assert.Equal([]int{2, 3}, queue.Data())
-	assert.Equal(1, *val)
-}
-
-func TestLinkedQueue_Front(t *testing.T) {
-	assert := internal.NewAssert(t, "TestLinkedQueue_Front")
-
-	queue := NewLinkedQueue[int]()
-	_, err := queue.Front()
-	assert.IsNotNil(err)
-
-	queue.EnQueue(1)
-	queue.EnQueue(2)
-	queue.EnQueue(3)
-
-	val, err := queue.Front()
-	assert.Equal(1, *val)
-	assert.IsNil(err)
-}
-
-func TestLinkedQueue_Back(t *testing.T) {
-	assert := internal.NewAssert(t, "TestLinkedQueue_Back")
-
-	queue := NewLinkedQueue[int]()
-	_, err := queue.Back()
-	assert.IsNotNil(err)
-
-	queue.EnQueue(1)
-	queue.EnQueue(2)
-	queue.EnQueue(3)
-
-	val, err := queue.Back()
-	assert.Equal(3, *val)
-	assert.IsNil(err)
-}
-
-func TestLinkedQueue_Clear(t *testing.T) {
-	assert := internal.NewAssert(t, "TestLinkedQueue_Back")
-
-	queue := NewLinkedQueue[int]()
-	assert.Equal(true, queue.IsEmpty())
-
-	queue.EnQueue(1)
-	queue.EnQueue(2)
-	queue.EnQueue(3)
-	assert.Equal(false, queue.IsEmpty())
-
-	queue.Clear()
-	assert.Equal(true, queue.IsEmpty())
-}
--- a/datastructure/set/set.go
+++ b/datastructure/set/set.go
@@ -1,105 +0,0 @@
-package datastructure
-
-// Set is a data container, like slice, but element of set is not duplicate
-type Set[T comparable] map[T]bool
-
-// NewSet return a instance of set
-func NewSet[T comparable](values ...T) Set[T] {
-	set := make(Set[T])
-	set.Add(values...)
-	return set
-}
-
-// Add value to set
-func (s Set[T]) Add(values ...T) {
-	for _, v := range values {
-		s[v] = true
-	}
-}
-
-// Contain checks if set contains value or not
-func (s Set[T]) Contain(value T) bool {
-	_, ok := s[value]
-	return ok
-}
-
-// Contain checks if set contains other set
-func (s Set[T]) ContainAll(other Set[T]) bool {
-	for k := range other {
-		_, ok := s[k]
-		if !ok {
-			return false
-		}
-	}
-	return true
-}
-
-// Clone return a copy of set
-func (s Set[T]) Clone() Set[T] {
-	set := NewSet[T]()
-	set.Add(s.Values()...)
-	return set
-}
-
-// Delete value of set
-func (s Set[T]) Delete(values ...T) {
-	for _, v := range values {
-		delete(s, v)
-	}
-}
-
-// Equal checks if two set has same elements or not
-func (s Set[T]) Equal(other Set[T]) bool {
-	if s.Size() != other.Size() {
-		return false
-	}
-
-	return s.ContainAll(other) && other.ContainAll(s)
-}
-
-// Iterate call function by every element of set
-func (s Set[T]) Iterate(fn func(value T)) {
-	for v := range s {
-		fn(v)
-	}
-}
-
-// IsEmpty checks the set is empty or not
-func (s Set[T]) IsEmpty() bool {
-	return len(s) == 0
-}
-
-// Size get the number of elements in set
-func (s Set[T]) Size() int {
-	return len(s)
-}
-
-// Values return all values of set
-func (s Set[T]) Values() []T {
-	values := make([]T, 0, 0)
-
-	s.Iterate(func(value T) {
-		values = append(values, value)
-	})
-
-	return values
-}
-
-// Union creates a new set contain all element of set s and other
-func (s Set[T]) Union(other Set[T]) Set[T] {
-	set := s.Clone()
-	set.Add(other.Values()...)
-	return set
-}
-
-// Intersection creates a new set whose element both be contained in set s and other
-func (s Set[T]) Intersection(other Set[T]) Set[T] {
-	set := NewSet[T]()
-	s.Iterate(func(value T) {
-		if other.Contain(value) {
-			set.Add(value)
-		}
-	})
-
-	return set
-}
--- a/datastructure/set/set_test.go
+++ b/datastructure/set/set_test.go
@@ -1,129 +0,0 @@
-package datastructure
-
-import (
-	"testing"
-
-	"github.com/duke-git/lancet/v2/internal"
-)
-
-func TestSet_Add(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSet_Add")
-
-	set := NewSet[int]()
-	set.Add(1, 2, 3)
-
-	expected := NewSet(1, 2, 3)
-
-	assert.Equal(true, set.Equal(expected))
-}
-
-func TestSet_Contain(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSet_Contain")
-
-	set := NewSet[int]()
-	set.Add(1, 2, 3)
-
-	assert.Equal(true, set.Contain(1))
-	assert.Equal(false, set.Contain(4))
-}
-
-func TestSet_ContainAll(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSet_ContainAll")
-
-	set1 := NewSet(1, 2, 3)
-	set2 := NewSet(1, 2)
-	set3 := NewSet(1, 2, 3, 4)
-
-	assert.Equal(true, set1.ContainAll(set2))
-	assert.Equal(false, set1.ContainAll(set3))
-}
-
-func TestSet_Clone(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSet_Clone")
-
-	set1 := NewSet(1, 2, 3)
-	set2 := set1.Clone()
-
-	assert.Equal(true, set1.Size() == set2.Size())
-	assert.Equal(true, set1.ContainAll(set2))
-}
-
-func TestSet_Delete(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSet_Delete")
-
-	set := NewSet[int]()
-	set.Add(1, 2, 3)
-	set.Delete(3)
-
-	expected := NewSet(1, 2)
-
-	assert.Equal(true, set.Equal(expected))
-}
-
-func TestSet_Equal(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSet_Equal")
-
-	set1 := NewSet(1, 2, 3)
-	set2 := NewSet(1, 2, 3)
-	set3 := NewSet(1, 2, 3, 4)
-
-	assert.Equal(true, set1.Equal(set2))
-	assert.Equal(false, set1.Equal(set3))
-}
-
-func TestSet_Iterate(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSet_Iterate")
-
-	set := NewSet(1, 2, 3)
-	arr := []int{}
-	set.Iterate(func(value int) {
-		arr = append(arr, value)
-	})
-
-	assert.Equal(3, len(arr))
-}
-
-func TestSet_IsEmpty(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSet_IsEmpty")
-
-	set := NewSet[int]()
-	assert.Equal(true, set.IsEmpty())
-}
-
-func TestSet_Size(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSet_Size")
-
-	set := NewSet(1, 2, 3)
-	assert.Equal(3, set.Size())
-}
-
-func TestSet_Values(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSet_Values")
-
-	set := NewSet(1, 2, 3)
-	values := set.Values()
-
-	assert.Equal(3, len(values))
-}
-
-func TestSet_Union(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSet_Union")
-
-	set1 := NewSet(1, 2, 3)
-	set2 := NewSet(2, 3, 4, 5)
-	expected := NewSet(1, 2, 3, 4, 5)
-	unionSet := set1.Union(set2)
-
-	assert.Equal(expected, unionSet)
-}
-
-func TestSet_Intersection(t *testing.T) {
-	assert := internal.NewAssert(t, "TestSet_Intersection")
-
-	set1 := NewSet(1, 2, 3)
-	set2 := NewSet(2, 3, 4, 5)
-	expected := NewSet(2, 3)
-	intersectionSet := set1.Intersection(set2)
-
-	assert.Equal(expected, intersectionSet)
-}
--- a/datastructure/stack/arraystack.go
+++ b/datastructure/stack/arraystack.go
@@ -1,62 +0,0 @@
-package datastructure
-
-import "errors"
-
-// ArrayStack implements stack with slice
-type ArrayStack[T any] struct {
-	data   []T
-	length int
-}
-
-// NewArrayStack return a empty ArrayStack pointer
-func NewArrayStack[T any]() *ArrayStack[T] {
-	return &ArrayStack[T]{data: []T{}, length: 0}
-}
-
-// Data return stack data
-func (s *ArrayStack[T]) Data() []T {
-	return s.data
-}
-
-// Size return length of stack data
-func (s *ArrayStack[T]) Size() int {
-	return s.length
-}
-
-// IsEmpty checks if stack is empty or not
-func (s *ArrayStack[T]) IsEmpty() bool {
-	return s.length == 0
-}
-
-// Push element into stack
-func (s *ArrayStack[T]) Push(value T) {
-	s.data = append([]T{value}, s.data...)
-	s.length++
-}
-
-// Pop delete the top element of stack then return it, if stack is empty, return nil and error
-func (s *ArrayStack[T]) Pop() (*T, error) {
-	if s.IsEmpty() {
-		return nil, errors.New("stack is empty")
-	}
-
-	topItem := s.data[0]
-	s.data = s.data[1:]
-	s.length--
-
-	return &topItem, nil
-}
-
-// Peak return the top element of stack then return it
-func (s *ArrayStack[T]) Peak() (*T, error) {
-	if s.IsEmpty() {
-		return nil, errors.New("stack is empty")
-	}
-	return &s.data[0], nil
-}
-
-// Clear the stack data
-func (s *ArrayStack[T]) Clear() {
-	s.data = []T{}
-	s.length = 0
-}
--- a/datastructure/stack/arraystack_test.go
+++ b/datastructure/stack/arraystack_test.go
@@ -1,77 +0,0 @@
-package datastructure
-
-import (
-	"testing"
-
-	"github.com/duke-git/lancet/v2/internal"
-)
-
-func TestArrayStack_Push(t *testing.T) {
-	assert := internal.NewAssert(t, "TestArrayStack_Push")
-
-	stack := NewArrayStack[int]()
-	stack.Push(1)
-	stack.Push(2)
-	stack.Push(3)
-
-	expected := []int{3, 2, 1}
-	values := stack.Data()
-	length := stack.Size()
-
-	assert.Equal(expected, values)
-	assert.Equal(3, length)
-}
-
-func TestArrayStack_Pop(t *testing.T) {
-	assert := internal.NewAssert(t, "TestArrayStack_Pop")
-
-	stack := NewArrayStack[int]()
-	_, err := stack.Pop()
-	assert.IsNotNil(err)
-
-	stack.Push(1)
-	stack.Push(2)
-	stack.Push(3)
-
-	topItem, err := stack.Pop()
-	assert.IsNil(err)
-	assert.Equal(3, *topItem)
-
-	expected := []int{2, 1}
-	assert.Equal(expected, stack.Data())
-}
-
-func TestArrayStack_Peak(t *testing.T) {
-	assert := internal.NewAssert(t, "TestArrayStack_Peak")
-
-	stack := NewArrayStack[int]()
-	_, err := stack.Peak()
-	assert.IsNotNil(err)
-
-	stack.Push(1)
-	stack.Push(2)
-	stack.Push(3)
-
-	topItem, err := stack.Peak()
-	assert.IsNil(err)
-	assert.Equal(3, *topItem)
-
-	expected := []int{3, 2, 1}
-	assert.Equal(expected, stack.Data())
-}
-
-func TestArrayStack_Clear(t *testing.T) {
-	assert := internal.NewAssert(t, "TestArrayStack_Clear")
-
-	stack := NewArrayStack[int]()
-	assert.Equal(true, stack.IsEmpty())
-	assert.Equal(0, stack.Size())
-
-	stack.Push(1)
-	assert.Equal(false, stack.IsEmpty())
-	assert.Equal(1, stack.Size())
-
-	stack.Clear()
-	assert.Equal(true, stack.IsEmpty())
-	assert.Equal(0, stack.Size())
-}
--- a/datastructure/stack/linkedstack.go
+++ b/datastructure/stack/linkedstack.go
@@ -1,94 +0,0 @@
-package datastructure
-
-import (
-	"errors"
-	"fmt"
-
-	"github.com/duke-git/lancet/v2/datastructure"
-)
-
-// LinkedStack implements stack with link list
-type LinkedStack[T any] struct {
-	top    *datastructure.StackNode[T]
-	length int
-}
-
-// NewLinkedStack return a empty LinkedStack pointer
-func NewLinkedStack[T any]() *LinkedStack[T] {
-	return &LinkedStack[T]{top: nil, length: 0}
-}
-
-// Data return stack data
-func (s *LinkedStack[T]) Data() []T {
-	res := []T{}
-	current := s.top
-
-	for current != nil {
-		res = append(res, current.Value)
-		current = current.Next
-	}
-	return res
-}
-
-// Size return length of stack data
-func (s *LinkedStack[T]) Size() int {
-	return s.length
-}
-
-// IsEmpty checks if stack is empty or not
-func (s *LinkedStack[T]) IsEmpty() bool {
-	return s.length == 0
-}
-
-// Push element into stack
-func (s *LinkedStack[T]) Push(value T) {
-	newNode := datastructure.NewStackNode(value)
-	top := s.top
-	if top == nil {
-		s.top = newNode
-	} else {
-		newNode.Next = top
-		s.top = newNode
-	}
-
-	s.length++
-}
-
-// Pop delete the top element of stack then return it, if stack is empty, return nil and error
-func (s *LinkedStack[T]) Pop() (*T, error) {
-	if s.IsEmpty() {
-		return nil, errors.New("stack is empty")
-	}
-
-	top := s.top
-	s.top = s.top.Next
-	s.length--
-
-	return &top.Value, nil
-}
-
-// Peak return the top element of stack then return it
-func (s *LinkedStack[T]) Peak() (*T, error) {
-	if s.IsEmpty() {
-		return nil, errors.New("stack is empty")
-	}
-	return &s.top.Value, nil
-}
-
-// Clear clear the stack data
-func (s *LinkedStack[T]) Clear() {
-	s.top = nil
-	s.length = 0
-}
-
-// Print all nodes info of stack link
-func (s *LinkedStack[T]) Print() {
-	current := s.top
-	info := "[ "
-	for current != nil {
-		info += fmt.Sprintf("%+v, ", current)
-		current = current.Next
-	}
-	info += " ]"
-	fmt.Println(info)
-}
--- a/datastructure/stack/linkedstack_test.go
+++ b/datastructure/stack/linkedstack_test.go
@@ -1,80 +0,0 @@
-package datastructure
-
-import (
-	"testing"
-
-	"github.com/duke-git/lancet/v2/internal"
-)
-
-func TestLinkedStack_Push(t *testing.T) {
-	assert := internal.NewAssert(t, "TestLinkedStack_Push")
-
-	stack := NewLinkedStack[int]()
-	stack.Push(1)
-	stack.Push(2)
-	stack.Push(3)
-
-	stack.Print()
-
-	expected := []int{3, 2, 1}
-	values := stack.Data()
-	size := stack.Size()
-
-	assert.Equal(expected, values)
-	assert.Equal(3, size)
-}
-
-func TestLinkedStack_Pop(t *testing.T) {
-	assert := internal.NewAssert(t, "TestLinkedStack_Pop")
-
-	stack := NewLinkedStack[int]()
-	_, err := stack.Pop()
-	assert.IsNotNil(err)
-
-	stack.Push(1)
-	stack.Push(2)
-	stack.Push(3)
-
-	topItem, err := stack.Pop()
-	assert.IsNil(err)
-	assert.Equal(3, *topItem)
-
-	expected := []int{2, 1}
-	stack.Print()
-	assert.Equal(expected, stack.Data())
-}
-
-func TestLinkedStack_Peak(t *testing.T) {
-	assert := internal.NewAssert(t, "TestLinkedStack_Peak")
-
-	stack := NewLinkedStack[int]()
-	_, err := stack.Peak()
-	assert.IsNotNil(err)
-
-	stack.Push(1)
-	stack.Push(2)
-	stack.Push(3)
-
-	topItem, err := stack.Peak()
-	assert.IsNil(err)
-	assert.Equal(3, *topItem)
-
-	expected := []int{3, 2, 1}
-	assert.Equal(expected, stack.Data())
-}
-
-func TestLinkedStack_Empty(t *testing.T) {
-	assert := internal.NewAssert(t, "TestLinkedStack_Empty")
-
-	stack := NewLinkedStack[int]()
-	assert.Equal(true, stack.IsEmpty())
-	assert.Equal(0, stack.Size())
-
-	stack.Push(1)
-	assert.Equal(false, stack.IsEmpty())
-	assert.Equal(1, stack.Size())
-
-	stack.Clear()
-	assert.Equal(true, stack.IsEmpty())
-	assert.Equal(0, stack.Size())
-}
--- a/datastructure/tree/bstree.go
+++ b/datastructure/tree/bstree.go
@@ -1,83 +0,0 @@
-package datastructure
-
-import (
-	"math"
-
-	"github.com/duke-git/lancet/v2/datastructure"
-	"github.com/duke-git/lancet/v2/lancetconstraints"
-)
-
-// BSTree is a binary search tree data structure in which each node has at most two children,
-// which are referred to as the left child and the right child.
-// In BSTree: leftNode < rootNode < rightNode
-// type T should implements Compare function in lancetconstraints.Comparator interface.
-type BSTree[T any] struct {
-	root *datastructure.TreeNode[T]
-}
-
-// NewBSTree create a BSTree pointer
-func NewBSTree[T any](rootData T) *BSTree[T] {
-	root := datastructure.NewTreeNode(rootData)
-	return &BSTree[T]{root}
-}
-
-// InsertNode insert data into BSTree
-func (t *BSTree[T]) InsertNode(data T, comparator lancetconstraints.Comparator) {
-	root := t.root
-	newNode := datastructure.NewTreeNode(data)
-	if root == nil {
-		t.root = newNode
-	} else {
-		insertTreeNode(root, newNode, comparator)
-	}
-}
-
-// DeletetNode delete data into BSTree
-func (t *BSTree[T]) DeletetNode(data T, comparator lancetconstraints.Comparator) {
-	deleteTreeNode(t.root, data, comparator)
-}
-
-// NodeLevel get node level in BSTree
-func (t *BSTree[T]) NodeLevel(node *datastructure.TreeNode[T]) int {
-	if node == nil {
-		return 0
-	}
-	left := float64(t.NodeLevel(node.Left))
-	right := float64(t.NodeLevel(node.Right))
-
-	return int(math.Max(left, right)) + 1
-}
-
-// PreOrderTraverse traverse tree node in pre order
-func (t *BSTree[T]) PreOrderTraverse() []T {
-	return preOrderTraverse(t.root)
-}
-
-// PostOrderTraverse traverse tree node in post order
-func (t *BSTree[T]) PostOrderTraverse() []T {
-	return postOrderTraverse(t.root)
-}
-
-// InOrderTraverse traverse tree node in mid order
-func (t *BSTree[T]) InOrderTraverse() []T {
-	return inOrderTraverse(t.root)
-}
-
-// LevelOrderTraverse traverse tree node in level order
-func (t *BSTree[T]) LevelOrderTraverse() []T {
-	traversal := make([]T, 0)
-	levelOrderTraverse(t.root, &traversal)
-	return traversal
-}
-
-// Depth returns the calculated depth of a binary saerch tree
-func (t *BSTree[T]) Depth() int {
-	return calculateDepth(t.root, 0)
-}
-
-// Print the bstree structure
-func (t *BSTree[T]) Print() {
-	maxLevel := t.NodeLevel(t.root)
-	nodes := []*datastructure.TreeNode[T]{t.root}
-	printTreeNodes(nodes, 1, maxLevel)
-}
--- a/datastructure/tree/bstree_test.go
+++ b/datastructure/tree/bstree_test.go
@@ -1,142 +0,0 @@
-package datastructure
-
-import (
-	"testing"
-
-	"github.com/duke-git/lancet/v2/internal"
-)
-
-type intComparator struct{}
-
-func (c *intComparator) Compare(v1, v2 any) int {
-	val1, _ := v1.(int)
-	val2, _ := v2.(int)
-
-	if val1 < val2 {
-		return -1
-	} else if val1 > val2 {
-		return 1
-	}
-	return 0
-}
-
-func TestBSTree_InsertNode(t *testing.T) {
-	bstree := NewBSTree(6)
-
-	comparator := &intComparator{}
-	bstree.InsertNode(7, comparator)
-	bstree.InsertNode(5, comparator)
-	bstree.InsertNode(2, comparator)
-	bstree.InsertNode(4, comparator)
-
-	bstree.Print()
-}
-
-func TestBSTree_PreOrderTraverse(t *testing.T) {
-	assert := internal.NewAssert(t, "TestBSTree_PreOrderTraverse")
-
-	bstree := NewBSTree(6)
-
-	comparator := &intComparator{}
-	bstree.InsertNode(7, comparator)
-	bstree.InsertNode(5, comparator)
-	bstree.InsertNode(2, comparator)
-	bstree.InsertNode(4, comparator)
-
-	acturl := bstree.PreOrderTraverse()
-	t.Log(acturl)
-	assert.Equal([]int{6, 5, 2, 4, 7}, acturl)
-}
-
-func TestBSTree_PostOrderTraverse(t *testing.T) {
-	assert := internal.NewAssert(t, "TestBSTree_PostOrderTraverse")
-
-	bstree := NewBSTree(6)
-
-	comparator := &intComparator{}
-	bstree.InsertNode(7, comparator)
-	bstree.InsertNode(5, comparator)
-	bstree.InsertNode(2, comparator)
-	bstree.InsertNode(4, comparator)
-
-	acturl := bstree.PostOrderTraverse()
-	t.Log(acturl)
-	assert.Equal([]int{5, 2, 4, 7, 6}, acturl)
-}
-
-func TestBSTree_InOrderTraverse(t *testing.T) {
-	assert := internal.NewAssert(t, "TestBSTree_InOrderTraverse")
-
-	bstree := NewBSTree(6)
-
-	comparator := &intComparator{}
-	bstree.InsertNode(7, comparator)
-	bstree.InsertNode(5, comparator)
-	bstree.InsertNode(2, comparator)
-	bstree.InsertNode(4, comparator)
-
-	acturl := bstree.InOrderTraverse()
-	t.Log(acturl)
-	assert.Equal([]int{2, 4, 5, 6, 7}, acturl)
-}
-
-func TestBSTree_LevelOrderTraverse(t *testing.T) {
-	assert := internal.NewAssert(t, "TestBSTree_LevelOrderTraverse")
-
-	bstree := NewBSTree(6)
-
-	comparator := &intComparator{}
-	bstree.InsertNode(7, comparator)
-	bstree.InsertNode(5, comparator)
-	bstree.InsertNode(2, comparator)
-	bstree.InsertNode(4, comparator)
-
-	bstree.Print()
-
-	acturl := bstree.LevelOrderTraverse()
-	t.Log(acturl)
-	assert.Equal([]int{6, 5, 7, 2, 4}, acturl)
-}
-
-func TestBSTree_DeletetNode(t *testing.T) {
-	assert := internal.NewAssert(t, "TestBSTree_DeletetNode")
-
-	bstree := NewBSTree(6)
-
-	comparator := &intComparator{}
-	bstree.InsertNode(7, comparator)
-	bstree.InsertNode(5, comparator)
-	bstree.InsertNode(2, comparator)
-	bstree.InsertNode(4, comparator)
-
-	bstree.Print()
-
-	bstree.DeletetNode(4, comparator)
-	bstree.Print()
-	acturl1 := bstree.InOrderTraverse()
-	t.Log(acturl1)
-	assert.Equal([]int{2, 5, 6, 7}, acturl1)
-
-	//todo
-	// bstree.DeletetNode(6, comparator)
-	// bstree.Print()
-	// acturl2 := bstree.InOrderTraverse()
-	// t.Log(acturl2)
-	// assert.Equal([]int{2, 5, 7}, acturl2)
-}
-
-func TestBSTree_Depth(t *testing.T) {
-	assert := internal.NewAssert(t, "TestBSTree_Depth")
-
-	bstree := NewBSTree(6)
-
-	comparator := &intComparator{}
-	bstree.InsertNode(7, comparator)
-	bstree.InsertNode(5, comparator)
-	bstree.InsertNode(2, comparator)
-	bstree.InsertNode(4, comparator)
-
-	bstree.Print()
-
-	assert.Equal(bstree.Depth(), 4)
-}
--- a/datastructure/tree/tree_internal.go
+++ b/datastructure/tree/tree_internal.go
@@ -1,224 +0,0 @@
-package datastructure
-
-import (
-	"fmt"
-	"math"
-
-	"github.com/duke-git/lancet/v2/datastructure"
-	"github.com/duke-git/lancet/v2/lancetconstraints"
-)
-
-func preOrderTraverse[T any](node *datastructure.TreeNode[T]) []T {
-	data := []T{}
-	if node != nil {
-		data = append(data, node.Data)
-		data = append(data, preOrderTraverse(node.Left)...)
-		data = append(data, preOrderTraverse(node.Right)...)
-	}
-	return data
-}
-
-func postOrderTraverse[T any](node *datastructure.TreeNode[T]) []T {
-	data := []T{}
-	if node != nil {
-		data = append(data, preOrderTraverse(node.Left)...)
-		data = append(data, preOrderTraverse(node.Right)...)
-		data = append(data, node.Data)
-	}
-	return data
-}
-
-func inOrderTraverse[T any](node *datastructure.TreeNode[T]) []T {
-	data := []T{}
-	if node != nil {
-		data = append(data, inOrderTraverse(node.Left)...)
-		data = append(data, node.Data)
-		data = append(data, inOrderTraverse(node.Right)...)
-	}
-	return data
-}
-
-func preOrderPrint[T any](node *datastructure.TreeNode[T]) {
-	if node == nil {
-		return
-	}
-
-	fmt.Printf("%v, ", node.Data)
-	preOrderPrint(node.Left)
-	preOrderPrint(node.Right)
-}
-
-func postOrderPrint[T any](node *datastructure.TreeNode[T]) {
-	if node == nil {
-		return
-	}
-
-	preOrderPrint(node.Left)
-	preOrderPrint(node.Right)
-	fmt.Printf("%v, ", node.Data)
-}
-
-func inOrderPrint[T any](node *datastructure.TreeNode[T]) {
-	if node == nil {
-		return
-	}
-
-	inOrderPrint(node.Left)
-	fmt.Printf("%v, ", node.Data)
-	inOrderPrint(node.Right)
-}
-
-func levelOrderTraverse[T any](root *datastructure.TreeNode[T], traversal *[]T) {
-	var q []*datastructure.TreeNode[T] // queue
-	var n *datastructure.TreeNode[T]   // temp node
-
-	q = append(q, root)
-
-	for len(q) != 0 {
-		n, q = q[0], q[1:]
-		*traversal = append(*traversal, n.Data)
-		if n.Left != nil {
-			q = append(q, n.Left)
-		}
-		if n.Right != nil {
-			q = append(q, n.Right)
-		}
-	}
-}
-
-func insertTreeNode[T any](rootNode, newNode *datastructure.TreeNode[T], comparator lancetconstraints.Comparator) {
-	if comparator.Compare(newNode.Data, rootNode.Data) == -1 {
-		if rootNode.Left == nil {
-			rootNode.Left = newNode
-		} else {
-			insertTreeNode(rootNode.Left, newNode, comparator)
-		}
-	} else {
-		if rootNode.Right == nil {
-			rootNode.Right = newNode
-		} else {
-			insertTreeNode(rootNode.Right, newNode, comparator)
-		}
-	}
-}
-
-// todo, delete root node failed
-func deleteTreeNode[T any](node *datastructure.TreeNode[T], data T, comparator lancetconstraints.Comparator) *datastructure.TreeNode[T] {
-	if node == nil {
-		return nil
-	}
-	if comparator.Compare(data, node.Data) == -1 {
-		node.Left = deleteTreeNode(node.Left, data, comparator)
-	} else if comparator.Compare(data, node.Data) == 1 {
-		node.Right = deleteTreeNode(node.Right, data, comparator)
-	} else {
-		if node.Left == nil {
-			node = node.Right
-		} else if node.Right == nil {
-			node = node.Left
-		} else {
-			l := node.Right
-			d := inOrderSuccessor(l)
-			d.Left = node.Left
-			return node.Right
-		}
-	}
-
-	return node
-}
-
-func inOrderSuccessor[T any](root *datastructure.TreeNode[T]) *datastructure.TreeNode[T] {
-	cur := root
-	for cur.Left != nil {
-		cur = cur.Left
-	}
-	return cur
-}
-
-func printTreeNodes[T any](nodes []*datastructure.TreeNode[T], level, maxLevel int) {
-	if len(nodes) == 0 || isAllNil(nodes) {
-		return
-	}
-
-	floor := maxLevel - level
-	endgeLines := int(math.Pow(float64(2), (math.Max(float64(floor)-1, 0))))
-	firstSpaces := int(math.Pow(float64(2), float64(floor))) - 1
-	betweenSpaces := int(math.Pow(float64(2), float64(floor)+1)) - 1
-
-	printSpaces(firstSpaces)
-
-	newNodes := []*datastructure.TreeNode[T]{}
-	for _, node := range nodes {
-		if node != nil {
-			fmt.Printf("%v", node.Data)
-			newNodes = append(newNodes, node.Left)
-			newNodes = append(newNodes, node.Right)
-		} else {
-			newNodes = append(newNodes, nil)
-			newNodes = append(newNodes, nil)
-			printSpaces(1)
-		}
-
-		printSpaces(betweenSpaces)
-	}
-
-	fmt.Println("")
-
-	for i := 1; i <= endgeLines; i++ {
-		for j := 0; j < len(nodes); j++ {
-			printSpaces(firstSpaces - i)
-			if nodes[j] == nil {
-				printSpaces(endgeLines + endgeLines + i + 1)
-				continue
-			}
-
-			if nodes[j].Left != nil {
-				fmt.Print("/")
-			} else {
-				printSpaces(1)
-			}
-
-			printSpaces(i + i - 1)
-
-			if nodes[j].Right != nil {
-				fmt.Print("\\")
-			} else {
-				printSpaces(1)
-			}
-			printSpaces(endgeLines + endgeLines - 1)
-		}
-		fmt.Println("")
-	}
-
-	printTreeNodes(newNodes, level+1, maxLevel)
-}
-
-// printSpaces
-func printSpaces(n int) {
-	for i := 0; i < n; i++ {
-		fmt.Print(" ")
-	}
-}
-
-func isAllNil[T any](nodes []*datastructure.TreeNode[T]) bool {
-	for _, v := range nodes {
-		if v != nil {
-			return false
-		}
-	}
-	return true
-}
-
-func calculateDepth[T any](node *datastructure.TreeNode[T], depth int) int {
-	if node == nil {
-		return depth
-	}
-	return max(calculateDepth(node.Left, depth+1), calculateDepth(node.Right, depth+1))
-}
-
-func max(a, b int) int {
-	if a > b {
-		return a
-	}
-	return b
-}
--- a/datetime/conversion_test.go
+++ b/datetime/conversion_test.go
@@ -3,7 +3,7 @@ package datetime
 import (
 	"testing"

-	"github.com/duke-git/lancet/v2/internal"
+	"github.com/duke-git/lancet/internal"
 )

 func TestToUnix(t *testing.T) {
--- a/datetime/datetime.go
+++ b/datetime/datetime.go
@@ -4,24 +4,24 @@
 // Package datetime implements some functions to format date and time.
 // Note:
 // 1. `format` param in FormatTimeToStr function should be as flow:
-//"yyyy-mm-dd hh:mm:ss"
-//"yyyy-mm-dd hh:mm"
-//"yyyy-mm-dd hh"
-//"yyyy-mm-dd"
-//"yyyy-mm"
-//"mm-dd"
-//"dd-mm-yy hh:mm:ss"
-//"yyyy/mm/dd hh:mm:ss"
-//"yyyy/mm/dd hh:mm"
-//"yyyy/mm/dd hh"
-//"yyyy/mm/dd"
-//"yyyy/mm"
-//"mm/dd"
-//"dd/mm/yy hh:mm:ss"
-//"yyyy"
-//"mm"
-//"hh:mm:ss"
-//"mm:ss"
+// "yyyy-mm-dd hh:mm:ss"
+// "yyyy-mm-dd hh:mm"
+// "yyyy-mm-dd hh"
+// "yyyy-mm-dd"
+// "yyyy-mm"
+// "mm-dd"
+// "dd-mm-yy hh:mm:ss"
+// "yyyy/mm/dd hh:mm:ss"
+// "yyyy/mm/dd hh:mm"
+// "yyyy/mm/dd hh"
+// "yyyy/mm/dd"
+// "yyyy/mm"
+// "mm/dd"
+// "dd/mm/yy hh:mm:ss"
+// "yyyy"
+// "mm"
+// "hh:mm:ss"
+// "mm:ss"
 package datetime

 import (
@@ -35,7 +35,7 @@ func init() {
 	timeFormat = map[string]string{
 		"yyyy-mm-dd hh:mm:ss": "2006-01-02 15:04:05",
 		"yyyy-mm-dd hh:mm":    "2006-01-02 15:04",
-		"yyyy-mm-dd hh":       "2006-01-02 15:04",
+		"yyyy-mm-dd hh":       "2006-01-02 15",
 		"yyyy-mm-dd":          "2006-01-02",
 		"yyyy-mm":             "2006-01",
 		"mm-dd":               "01-02",
@@ -69,6 +69,11 @@ func AddDay(t time.Time, day int64) time.Time {
 	return t.Add(24 * time.Hour * time.Duration(day))
 }

+// AddYear add or sub year to the time.
+func AddYear(t time.Time, year int64) time.Time {
+	return t.Add(365 * 24 * time.Hour * time.Duration(year))
+}
+
 // GetNowDate return format yyyy-mm-dd of current date
 func GetNowDate() string {
 	return time.Now().Format("2006-01-02")
@@ -180,3 +185,28 @@ func BeginOfYear(t time.Time) time.Time {
 func EndOfYear(t time.Time) time.Time {
 	return BeginOfYear(t).AddDate(1, 0, 0).Add(-time.Nanosecond)
 }
+
+// IsLeapYear check if param year is leap year or not.
+func IsLeapYear(year int) bool {
+	return year%4 == 0 && (year%100 != 0 || year%400 == 0)
+}
+
+// BetweenSeconds returns the number of seconds between two times.
+func BetweenSeconds(t1 time.Time, t2 time.Time) int64 {
+	index := t2.Unix() - t1.Unix()
+	return index
+}
+
+// DayOfYear returns which day of the year the parameter date `t` is.
+func DayOfYear(t time.Time) int {
+	y, m, d := t.Date()
+	firstDay := time.Date(y, 1, 1, 0, 0, 0, 0, t.Location())
+	nowDate := time.Date(y, m, d, 0, 0, 0, 0, t.Location())
+
+	return int(nowDate.Sub(firstDay).Hours() / 24)
+}
+
+// IsWeekend checks if passed time is weekend or not.
+func IsWeekend(t time.Time) bool {
+	return time.Saturday == t.Weekday() || time.Sunday == t.Weekday()
+}
--- a/datetime/datetime_test.go
+++ b/datetime/datetime_test.go
@@ -4,7 +4,7 @@ import (
 	"testing"
 	"time"

-	"github.com/duke-git/lancet/v2/internal"
+	"github.com/duke-git/lancet/internal"
 )

 func TestAddDay(t *testing.T) {
@@ -46,6 +46,19 @@ func TestAddMinute(t *testing.T) {
 	assert.Equal(float64(-2), diff2.Minutes())
 }

+func TestAddYear(t *testing.T) {
+	assert := internal.NewAssert(t, "TestAddDay")
+
+	now := time.Now()
+	after2Years := AddYear(now, 1)
+	diff1 := after2Years.Sub(now)
+	assert.Equal(float64(8760), diff1.Hours())
+
+	before2Years := AddYear(now, -1)
+	diff2 := before2Years.Sub(now)
+	assert.Equal(float64(-8760), diff2.Hours())
+}
+
 func TestGetNowDate(t *testing.T) {
 	assert := internal.NewAssert(t, "TestGetNowDate")
 	expected := time.Now().Format("2006-01-02")
@@ -231,3 +244,57 @@ func TestEndOfYear(t *testing.T) {

 	assert.Equal(expected, actual)
 }
+
+func TestIsLeapYear(t *testing.T) {
+	assert := internal.NewAssert(t, "TestEndOfYear")
+
+	result1 := IsLeapYear(2000)
+	result2 := IsLeapYear(2001)
+
+	assert.Equal(true, result1)
+	assert.Equal(false, result2)
+}
+
+func TestBetweenSeconds(t *testing.T) {
+	assert := internal.NewAssert(t, "TestBetweenSeconds")
+
+	today := time.Now()
+	tomorrow := AddDay(today, 1)
+	yesterday := AddDay(today, -1)
+
+	result1 := BetweenSeconds(today, tomorrow)
+	result2 := BetweenSeconds(today, yesterday)
+
+	assert.Equal(int64(86400), result1)
+	assert.Equal(int64(-86400), result2)
+}
+
+func TestDayOfYear(t *testing.T) {
+	assert := internal.NewAssert(t, "TestDayOfYear")
+	date1 := time.Date(2023, 02, 01, 1, 1, 1, 0, time.Local)
+	result1 := DayOfYear(date1)
+	assert.Equal(31, result1)
+
+	date2 := time.Date(2023, 01, 02, 1, 1, 1, 0, time.Local)
+	result2 := DayOfYear(date2)
+	assert.Equal(1, result2)
+
+	date3 := time.Date(2023, 01, 01, 1, 1, 1, 0, time.Local)
+	result3 := DayOfYear(date3)
+	assert.Equal(0, result3)
+}
+
+func TestIsWeekend(t *testing.T) {
+	assert := internal.NewAssert(t, "TestIsWeekend")
+	date := time.Date(2023, 06, 03, 0, 0, 0, 0, time.Local)
+	result := IsWeekend(date)
+	assert.Equal(true, result)
+
+	date1 := time.Date(2023, 06, 04, 0, 0, 0, 0, time.Local)
+	result1 := IsWeekend(date1)
+	assert.Equal(true, result1)
+
+	date2 := time.Date(2023, 06, 02, 0, 0, 0, 0, time.Local)
+	result2 := IsWeekend(date2)
+	assert.Equal(false, result2)
+}
--- a/docs/algorithm.md
+++ b/docs/algorithm.md
@@ -1,593 +0,0 @@
-# Algorithm
-Package algorithm implements some basic algorithm. eg. sort, search.
-
-<div STYLE="page-break-after: always;"></div>
-
-## Source
-
- [https://github.com/duke-git/lancet/blob/main/algorithm/sorter.go](https://github.com/duke-git/lancet/blob/main/algorithm/sorter.go)
- [https://github.com/duke-git/lancet/blob/main/algorithm/search.go](https://github.com/duke-git/lancet/blob/main/algorithm/search.go)
- [https://github.com/duke-git/lancet/blob/main/algorithm/lru_cache.go](https://github.com/duke-git/lancet/blob/main/algorithm/lru_cache.go)
-
-<div STYLE="page-break-after: always;"></div>
-
-## Usage
-```go
-import (
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-```
-
-<div STYLE="page-break-after: always;"></div>
-
-## Index
- [BubbleSort](#BubbleSort)
- [CountSort](#CountSort)
- [HeapSort](#HeapSort)
- [InsertionSort](#InsertionSort)
- [MergeSort](#MergeSort)
- [QuickSort](#QuickSort)
- [SelectionSort](#SelectionSort)
- [ShellSort](#ShellSort)
- [BinarySearch](#BinarySearch)
- [BinaryIterativeSearch](#BinaryIterativeSearch)
- [LinearSearch](#LinearSearch)
- [LRUCache](#LRUCache)
-
-<div STYLE="page-break-after: always;"></div>
-
-## Documentation
-
-
-
-### <span id="BubbleSort">BubbleSort</span>
-<p>Sort slice with bubble sort algorithm. Param comparator should implements lancetconstraints.Comparator.</p>
-
-<b>Signature:</b>
-
-```go
-func BubbleSort[T any](slice []T, comparator lancetconstraints.Comparator) []T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    intSlice := []int{2, 1, 5, 3, 6, 4}
-    comparator := &intComparator{}
-    sortedSlice := algorithm.BubbleSort(intSlice, comparator)
-
-    fmt.Println(sortedSlice) //[]int{1, 2, 3, 4, 5, 6}
-}
-```
-
-
-
-
-### <span id="InsertionSort">InsertionSort</span>
-<p>Sort slice with insertion sort algorithm. Param comparator should implements lancetconstraints.Comparator.</p>
-
-<b>Signature:</b>
-
-```go
-func InsertionSort[T any](slice []T, comparator lancetconstraints.Comparator) []T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type people struct {
-        Name string
-        Age  int
-    }
-
-    // PeopleAageComparator sort people slice by age field
-    type peopleAgeComparator struct{}
-
-    // Compare implements github.com/duke-git/lancet/lancetconstraints/constraints.go/Comparator
-    func (pc *peopleAgeComparator) Compare(v1 any, v2 any) int {
-        p1, _ := v1.(people)
-        p2, _ := v2.(people)
-
-        //ascending order
-        if p1.Age < p2.Age {
-            return -1
-        } else if p1.Age > p2.Age {
-            return 1
-        }
-        return 0
-
-        //decending order
-        // if p1.Age > p2.Age {
-        // 	return -1
-        // } else if p1.Age < p2.Age {
-        // 	return 1
-        // }
-    }
-
-    var peoples = []people{
-        {Name: "a", Age: 20},
-        {Name: "b", Age: 10},
-        {Name: "c", Age: 17},
-        {Name: "d", Age: 8},
-        {Name: "e", Age: 28},
-    }
-    comparator := &peopleAgeComparator{}
-    sortedPeople := algorithm.InsertionSort(peoples, comparator)
-
-    fmt.Println(sortedSlice) //[{d 8} {b 10} {c 17} {a 20} {e 28}]
-}
-```
-
-
-
-
-### <span id="SelectionSort">SelectionSort</span>
-<p>Sort slice with selection sort algorithm. Param comparator should implements lancetconstraints.Comparator.</p>
-
-<b>Signature:</b>
-
-```go
-func SelectionSort[T any](slice []T, comparator lancetconstraints.Comparator) []T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    intSlice := []int{2, 1, 5, 3, 6, 4}
-    comparator := &intComparator{}
-    sortedSlice := algorithm.SelectionSort(intSlice, comparator)
-
-    fmt.Println(sortedSlice) //[]int{1, 2, 3, 4, 5, 6}
-}
-```
-
-
-
-
-### <span id="ShellSort">ShellSort</span>
-<p>Sort slice with shell sort algorithm. Param comparator should implements lancetconstraints.Comparator.</p>
-
-<b>Signature:</b>
-
-```go
-func ShellSort[T any](slice []T, comparator lancetconstraints.Comparator) []T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    intSlice := []int{2, 1, 5, 3, 6, 4}
-    comparator := &intComparator{}
-    sortedSlice := algorithm.ShellSort(intSlice, comparator)
-
-    fmt.Println(sortedSlice) //[]int{1, 2, 3, 4, 5, 6}
-}
-```
-
-
-
-
-### <span id="QuickSort">QuickSort</span>
-<p>Sort slice with quick sort algorithm. Param comparator should implements lancetconstraints.Comparator.</p>
-
-<b>Signature:</b>
-
-```go
-func QuickSort[T any](slice []T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) []T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    intSlice := []int{2, 1, 5, 3, 6, 4}
-    comparator := &intComparator{}
-    sortedSlice := algorithm.QuickSort(intSlice, 0, len(intSlice)-1, comparator)
-
-    fmt.Println(sortedSlice) //[]int{1, 2, 3, 4, 5, 6}
-}
-```
-
-
-
-
-### <span id="HeapSort">HeapSort</span>
-<p>Sort slice with heap sort algorithm. Param comparator should implements lancetconstraints.Comparator.</p>
-
-<b>Signature:</b>
-
-```go
-func HeapSort[T any](slice []T, comparator lancetconstraints.Comparator) []T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    intSlice := []int{2, 1, 5, 3, 6, 4}
-    comparator := &intComparator{}
-    sortedSlice := algorithm.HeapSort(intSlice, comparator)
-
-    fmt.Println(sortedSlice) //[]int{1, 2, 3, 4, 5, 6}
-}
-```
-
-
-
-
-### <span id="MergeSort">MergeSort</span>
-<p>Sort slice with merge sort algorithm. Param comparator should implements lancetconstraints.Comparator.</p>
-
-<b>Signature:</b>
-
-```go
-func MergeSort[T any](slice []T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) []T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    intSlice := []int{2, 1, 5, 3, 6, 4}
-    comparator := &intComparator{}
-    sortedSlice := algorithm.MergeSort(intSlice, 0, len(intSlice)-1, comparator)
-
-    fmt.Println(sortedSlice) //[]int{1, 2, 3, 4, 5, 6}
-}
-```
-
-
-
-### <span id="CountSort">CountSort</span>
-<p>Sort slice with count sort algorithm. Param comparator should implements lancetconstraints.Comparator.</p>
-
-<b>Signature:</b>
-
-```go
-func CountSort[T any](slice []T, comparator lancetconstraints.Comparator) []T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    intSlice := []int{2, 1, 5, 3, 6, 4}
-    comparator := &intComparator{}
-    sortedSlice := algorithm.CountSort(intSlice, comparator)
-
-    fmt.Println(sortedSlice) //[]int{1, 2, 3, 4, 5, 6}
-}
-```
-
-
-
-
-### <span id="BinarySearch">BinarySearch</span>
-<p>BinarySearch search for target within a sorted slice, recursive call itself. If a target is found, the index of the target is returned. Else the function return -1.</p>
-
-<b>Signature:</b>
-
-```go
-func BinarySearch[T any](sortedSlice []T, target T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) int
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    var sortedNumbers = []int{1, 2, 3, 4, 5, 6, 7, 8}
-    comparator := &intComparator{}
-    foundIndex := algorithm.BinarySearch(sortedNumbers, 5, 0, len(sortedNumbers)-1, comparator)
-    fmt.Println(foundIndex) //4
-
-    notFoundIndex := algorithm.BinarySearch(sortedNumbers, 9, 0, len(sortedNumbers)-1, comparator)
-    fmt.Println(notFoundIndex) //-1
-}
-```
-
-
-
-### <span id="BinaryIterativeSearch">BinaryIterativeSearch</span>
-<p>BinaryIterativeSearch search for target within a sorted slice, recursive call itself. If a target is found, the index of the target is returned. Else the function return -1.</p>
-
-<b>Signature:</b>
-
-```go
-func BinaryIterativeSearch[T any](sortedSlice []T, target T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) int
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    var sortedNumbers = []int{1, 2, 3, 4, 5, 6, 7, 8}
-    comparator := &intComparator{}
-    foundIndex := algorithm.BinaryIterativeSearch(sortedNumbers, 5, 0, len(sortedNumbers)-1, comparator)
-    fmt.Println(foundIndex) //4
-
-    notFoundIndex := algorithm.BinaryIterativeSearch(sortedNumbers, 9, 0, len(sortedNumbers)-1, comparator)
-    fmt.Println(notFoundIndex) //-1
-}
-```
-
-
-
-
-### <span id="LinearSearch">LinearSearch</span>
-<p>LinearSearch Simple linear search algorithm that iterates over all elements of an slice. If a target is found, the index of the target is returned. Else the function return -1.</p>
-
-<b>Signature:</b>
-
-```go
-func LinearSearch[T any](slice []T, target T, comparator lancetconstraints.Comparator) int
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    intSlice := []int{2, 1, 5, 3, 6, 4}
-    comparator := &intComparator{}
-    foundIndex := algorithm.LinearSearch(intSlice, 5, comparator)
-    fmt.Println(foundIndex) //2
-
-    notFoundIndex := algorithm.LinearSearch(sortedNumbers, 0, comparator)
-    fmt.Println(notFoundIndex) //-1
-}
-```
-
-
-
-
-### <span id="LRUCache">LRUCache</span>
-<p>LRUCache implements mem cache with lru.</p>
-
-<b>Signature:</b>
-
-```go
-func NewLRUCache[K comparable, V any](capacity int) *LRUCache[K, V]
-func (l *LRUCache[K, V]) Get(key K) (V, bool)
-func (l *LRUCache[K, V]) Put(key K, value V)
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    cache := algorithm.NewLRUCache[int, int](2)
-
-	cache.Put(1, 1)
-	cache.Put(2, 2)
-
-    _, ok := cache.Get(0) // ok -> false
-
-    v, ok := cache.Get(1) // v->1, ok->true
-
-}
-```
--- a/docs/algorithm_zh-CN.md
+++ b/docs/algorithm_zh-CN.md
@@ -1,593 +0,0 @@
-# Algorithm
-algorithm算法包实现一些基本算法，sort，search，lrucache。
-
-<div STYLE="page-break-after: always;"></div>
-
-## 源码
-
- [https://github.com/duke-git/lancet/blob/main/algorithm/sorter.go](https://github.com/duke-git/lancet/blob/main/algorithm/sorter.go)
- [https://github.com/duke-git/lancet/blob/main/algorithm/search.go](https://github.com/duke-git/lancet/blob/main/algorithm/search.go)
- [https://github.com/duke-git/lancet/blob/main/algorithm/lru_cache.go](https://github.com/duke-git/lancet/blob/main/algorithm/lru_cache.go)
-
-<div STYLE="page-break-after: always;"></div>
-
-## 用法
-```go
-import (
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-```
-
-<div STYLE="page-break-after: always;"></div>
-
-## 目录
- [BubbleSort](#BubbleSort)
- [CountSort](#CountSort)
- [HeapSort](#HeapSort)
- [InsertionSort](#InsertionSort)
- [MergeSort](#MergeSort)
- [QuickSort](#QuickSort)
- [SelectionSort](#SelectionSort)
- [ShellSort](#ShellSort)
- [BinarySearch](#BinarySearch)
- [BinaryIterativeSearch](#BinaryIterativeSearch)
- [LinearSearch](#LinearSearch)
- [LRUCache](#LRUCache)
-
-<div STYLE="page-break-after: always;"></div>
-
-## 文档
-
-
-
-### <span id="BubbleSort">BubbleSort</span>
-<p>冒泡排序，参数comparator需要实现包lancetconstraints.Comparator</p>
-
-<b>函数签名:</b>
-
-```go
-func BubbleSort[T any](slice []T, comparator lancetconstraints.Comparator) []T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    intSlice := []int{2, 1, 5, 3, 6, 4}
-    comparator := &intComparator{}
-    sortedSlice := algorithm.BubbleSort(intSlice, comparator)
-
-    fmt.Println(sortedSlice) //[]int{1, 2, 3, 4, 5, 6}
-}
-```
-
-
-
-
-### <span id="InsertionSort">InsertionSort</span>
-<p>插入排序，参数comparator需要实现包lancetconstraints.Comparator</p>
-
-<b>函数签名:</b>
-
-```go
-func InsertionSort[T any](slice []T, comparator lancetconstraints.Comparator) []T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type people struct {
-        Name string
-        Age  int
-    }
-
-    // PeopleAageComparator sort people slice by age field
-    type peopleAgeComparator struct{}
-
-    // Compare implements github.com/duke-git/lancet/lancetconstraints/constraints.go/Comparator
-    func (pc *peopleAgeComparator) Compare(v1 any, v2 any) int {
-        p1, _ := v1.(people)
-        p2, _ := v2.(people)
-
-        //ascending order
-        if p1.Age < p2.Age {
-            return -1
-        } else if p1.Age > p2.Age {
-            return 1
-        }
-        return 0
-
-        //decending order
-        // if p1.Age > p2.Age {
-        // 	return -1
-        // } else if p1.Age < p2.Age {
-        // 	return 1
-        // }
-    }
-
-    var peoples = []people{
-        {Name: "a", Age: 20},
-        {Name: "b", Age: 10},
-        {Name: "c", Age: 17},
-        {Name: "d", Age: 8},
-        {Name: "e", Age: 28},
-    }
-    comparator := &peopleAgeComparator{}
-    sortedPeople := algorithm.InsertionSort(peoples, comparator)
-
-    fmt.Println(sortedSlice) //[{d 8} {b 10} {c 17} {a 20} {e 28}]
-}
-```
-
-
-
-
-### <span id="SelectionSort">SelectionSort</span>
-<p>选择排序，参数comparator需要实现包lancetconstraints.Comparator</p>
-
-<b>函数签名:</b>
-
-```go
-func SelectionSort[T any](slice []T, comparator lancetconstraints.Comparator) []T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    intSlice := []int{2, 1, 5, 3, 6, 4}
-    comparator := &intComparator{}
-    sortedSlice := algorithm.SelectionSort(intSlice, comparator)
-
-    fmt.Println(sortedSlice) //[]int{1, 2, 3, 4, 5, 6}
-}
-```
-
-
-
-
-### <span id="ShellSort">ShellSort</span>
-<p>希尔排序，参数comparator需要实现包lancetconstraints.Comparator</p>
-
-<b>函数签名:</b>
-
-```go
-func ShellSort[T any](slice []T, comparator lancetconstraints.Comparator) []T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    intSlice := []int{2, 1, 5, 3, 6, 4}
-    comparator := &intComparator{}
-    sortedSlice := algorithm.ShellSort(intSlice, comparator)
-
-    fmt.Println(sortedSlice) //[]int{1, 2, 3, 4, 5, 6}
-}
-```
-
-
-
-
-### <span id="QuickSort">QuickSort</span>
-<p>快速排序，参数comparator需要实现包lancetconstraints.Comparator</p>
-
-<b>函数签名:</b>
-
-```go
-func QuickSort[T any](slice []T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) []T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    intSlice := []int{2, 1, 5, 3, 6, 4}
-    comparator := &intComparator{}
-    sortedSlice := algorithm.QuickSort(intSlice, 0, len(intSlice)-1, comparator)
-
-    fmt.Println(sortedSlice) //[]int{1, 2, 3, 4, 5, 6}
-}
-```
-
-
-
-
-### <span id="HeapSort">HeapSort</span>
-<p>堆排序，参数comparator需要实现包lancetconstraints.Comparator</p>
-
-<b>函数签名:</b>
-
-```go
-func HeapSort[T any](slice []T, comparator lancetconstraints.Comparator) []T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    intSlice := []int{2, 1, 5, 3, 6, 4}
-    comparator := &intComparator{}
-    sortedSlice := algorithm.HeapSort(intSlice, comparator)
-
-    fmt.Println(sortedSlice) //[]int{1, 2, 3, 4, 5, 6}
-}
-```
-
-
-
-
-### <span id="MergeSort">MergeSort</span>
-<p>归并排序，参数comparator需要实现包lancetconstraints.Comparator</p>
-
-<b>函数签名:</b>
-
-```go
-func MergeSort[T any](slice []T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) []T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    intSlice := []int{2, 1, 5, 3, 6, 4}
-    comparator := &intComparator{}
-    sortedSlice := algorithm.MergeSort(intSlice, 0, len(intSlice)-1, comparator)
-
-    fmt.Println(sortedSlice) //[]int{1, 2, 3, 4, 5, 6}
-}
-```
-
-
-
-### <span id="CountSort">CountSort</span>
-<p>计数排序，参数comparator需要实现包lancetconstraints.Comparator</p>
-
-<b>函数签名:</b>
-
-```go
-func CountSort[T any](slice []T, comparator lancetconstraints.Comparator) []T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    intSlice := []int{2, 1, 5, 3, 6, 4}
-    comparator := &intComparator{}
-    sortedSlice := algorithm.CountSort(intSlice, comparator)
-
-    fmt.Println(sortedSlice) //[]int{1, 2, 3, 4, 5, 6}
-}
-```
-
-
-
-
-### <span id="BinarySearch">BinarySearch</span>
-<p>二分递归查找，返回元素索引，未找到元素返回-1，参数comparator需要实现包lancetconstraints.Comparator</p>
-
-<b>函数签名:</b>
-
-```go
-func BinarySearch[T any](sortedSlice []T, target T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) int
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    var sortedNumbers = []int{1, 2, 3, 4, 5, 6, 7, 8}
-    comparator := &intComparator{}
-    foundIndex := algorithm.BinarySearch(sortedNumbers, 5, 0, len(sortedNumbers)-1, comparator)
-    fmt.Println(foundIndex) //4
-
-    notFoundIndex := algorithm.BinarySearch(sortedNumbers, 9, 0, len(sortedNumbers)-1, comparator)
-    fmt.Println(notFoundIndex) //-1
-}
-```
-
-
-
-### <span id="BinaryIterativeSearch">BinaryIterativeSearch</span>
-<p>二分迭代查找，返回元素索引，未找到元素返回-1，参数comparator需要实现包lancetconstraints.Comparator</p>
-
-<b>函数签名:</b>
-
-```go
-func BinaryIterativeSearch[T any](sortedSlice []T, target T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) int
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    var sortedNumbers = []int{1, 2, 3, 4, 5, 6, 7, 8}
-    comparator := &intComparator{}
-    foundIndex := algorithm.BinaryIterativeSearch(sortedNumbers, 5, 0, len(sortedNumbers)-1, comparator)
-    fmt.Println(foundIndex) //4
-
-    notFoundIndex := algorithm.BinaryIterativeSearch(sortedNumbers, 9, 0, len(sortedNumbers)-1, comparator)
-    fmt.Println(notFoundIndex) //-1
-}
-```
-
-
-
-
-### <span id="LinearSearch">LinearSearch</span>
-<p>线性查找，返回元素索引，未找到元素返回-1，参数comparator需要实现包lancetconstraints.Comparator</p>
-
-<b>函数签名:</b>
-
-```go
-func LinearSearch[T any](slice []T, target T, comparator lancetconstraints.Comparator) int
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    type intComparator struct{}
-
-    func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
-    }
-
-    intSlice := []int{2, 1, 5, 3, 6, 4}
-    comparator := &intComparator{}
-    foundIndex := algorithm.LinearSearch(intSlice, 5, comparator)
-    fmt.Println(foundIndex) //2
-
-    notFoundIndex := algorithm.LinearSearch(sortedNumbers, 0, comparator)
-    fmt.Println(notFoundIndex) //-1
-}
-```
-
-
-
-
-### <span id="LRUCache">LRUCache</span>
-<p>lru实现缓存</p>
-
-<b>函数签名:</b>
-
-```go
-func NewLRUCache[K comparable, V any](capacity int) *LRUCache[K, V]
-func (l *LRUCache[K, V]) Get(key K) (V, bool)
-func (l *LRUCache[K, V]) Put(key K, value V)
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/algorithm"
-)
-
-func main() {
-    cache := algorithm.NewLRUCache[int, int](2)
-
-	cache.Put(1, 1)
-	cache.Put(2, 2)
-
-    _, ok := cache.Get(0) // ok -> false
-
-    v, ok := cache.Get(1) // v->1, ok->true
-
-}
-```
--- a/docs/compare.md
+++ b/docs/compare.md
@@ -0,0 +1,326 @@
+# Compare
+
+Package compare provides a lightweight comparison function on any type.
+
+<div STYLE="page-break-after: always;"></div>
+
+## Source:
+
+-   [https://github.com/duke-git/lancet/blob/v1/compare/compare.go](https://github.com/duke-git/lancet/blob/v1/compare/compare.go)
+
+-   [https://github.com/duke-git/lancet/blob/v1/compare/compare_internal.go](https://github.com/duke-git/lancet/blob/v1/compare/compare_internal.go)
+
+<div STYLE="page-break-after: always;"></div>
+
+## Usage:
+
+```go
+import (
+    "github.com/duke-git/lancet/condition"
+)
+```
+
+<div STYLE="page-break-after: always;"></div>
+
+## Index
+
+-   [Equal](#Equal)
+-   [EqualValue](#EqualValue)
+-   [LessThan](#LessThan)
+-   [GreaterThan](#GreaterThan)
+-   [LessOrEqual](#LessOrEqual)
+-   [GreaterOrEqual](#GreaterOrEqual)
+
+<div STYLE="page-break-after: always;"></div>
+
+## Documentation
+
+### <span id="Equal">Equal</span>
+
+<p>Checks if two values are equal or not. (check both type and value)</p>
+
+<b>Signature:</b>
+
+```go
+func Equal(left, right any) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.Equal(1, 1)
+    result2 := compare.Equal("1", "1")
+    result3 := compare.Equal([]int{1, 2, 3}, []int{1, 2, 3})
+    result4 := compare.Equal(map[int]string{1: "a", 2: "b"}, map[int]string{1: "a", 2: "b"})
+
+    result5 := compare.Equal(1, "1")
+    result6 := compare.Equal(1, int64(1))
+    result7 := compare.Equal([]int{1, 2}, []int{1, 2, 3})
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+    fmt.Println(result7)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+    // false
+}
+```
+
+### <span id="EqualValue">EqualValue</span>
+
+<p>Checks if two values are equal or not. (check value only)</p>
+
+<b>Signature:</b>
+
+```go
+func EqualValue(left, right any) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.EqualValue(1, 1)
+    result2 := compare.EqualValue(int(1), int64(1))
+    result3 := compare.EqualValue(1, "1")
+    result4 := compare.EqualValue(1, "2")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // true
+    // true
+    // true
+    // false
+}
+```
+
+### <span id="LessThan">LessThan</span>
+
+<p>Checks if value `left` less than value `right`.</p>
+
+<b>Signature:</b>
+
+```go
+func LessThan(left, right any) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.LessThan(1, 2)
+    result2 := compare.LessThan(1.1, 2.2)
+    result3 := compare.LessThan("a", "b")
+
+    time1 := time.Now()
+    time2 := time1.Add(time.Second)
+    result4 := compare.LessThan(time1, time2)
+
+    result5 := compare.LessThan(2, 1)
+    result6 := compare.LessThan(1, int64(2))
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+}
+```
+
+### <span id="GreaterThan">GreaterThan</span>
+
+<p>Checks if value `left` greater than value `right`.</p>
+
+<b>Signature:</b>
+
+```go
+func GreaterThan(left, right any) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.GreaterThan(2, 1)
+    result2 := compare.GreaterThan(2.2, 1.1)
+    result3 := compare.GreaterThan("b", "a")
+
+    time1 := time.Now()
+    time2 := time1.Add(time.Second)
+    result4 := compare.GreaterThan(time2, time1)
+
+    result5 := compare.GreaterThan(1, 2)
+    result6 := compare.GreaterThan(int64(2), 1)
+    result7 := compare.GreaterThan("b", "c")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+    fmt.Println(result7)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+    // false
+}
+```
+
+### <span id="LessOrEqual">LessOrEqual</span>
+
+<p>Checks if value `left` less than or equal than value `right`.</p>
+
+<b>Signature:</b>
+
+```go
+func LessOrEqual(left, right any) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.LessOrEqual(1, 1)
+    result2 := compare.LessOrEqual(1.1, 2.2)
+    result3 := compare.LessOrEqual("a", "b")
+
+    time1 := time.Now()
+    time2 := time1.Add(time.Second)
+    result4 := compare.LessOrEqual(time1, time2)
+
+    result5 := compare.LessOrEqual(2, 1)
+    result6 := compare.LessOrEqual(1, int64(2))
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+}
+```
+
+### <span id="GreaterOrEqual">GreaterOrEqual</span>
+
+<p>Checks if value `left` less greater or equal than value `right`.</p>
+
+<b>Signature:</b>
+
+```go
+func GreaterOrEqual(left, right any) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.GreaterOrEqual(1, 1)
+    result2 := compare.GreaterOrEqual(2.2, 1.1)
+    result3 := compare.GreaterOrEqual("b", "b")
+
+    time1 := time.Now()
+    time2 := time1.Add(time.Second)
+    result4 := compare.GreaterOrEqual(time2, time1)
+
+    result5 := compare.GreaterOrEqual(1, 2)
+    result6 := compare.GreaterOrEqual(int64(2), 1)
+    result7 := compare.GreaterOrEqual("b", "c")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+    fmt.Println(result7)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+    // false
+}
+```
--- a/docs/compare_zh-CN.md
+++ b/docs/compare_zh-CN.md
@@ -0,0 +1,326 @@
+# Compare
+
+compare包提供几个轻量级的类型比较函数。
+
+<div STYLE="page-break-after: always;"></div>
+
+## 源码:
+
+-   [https://github.com/duke-git/lancet/blob/v1/compare/compare.go](https://github.com/duke-git/lancet/blob/v1/compare/compare.go)
+
+-   [https://github.com/duke-git/lancet/blob/v1/compare/compare_internal.go](https://github.com/duke-git/lancet/blob/v1/compare/compare_internal.go)
+
+<div STYLE="page-break-after: always;"></div>
+
+## 用法:
+
+```go
+import (
+    "github.com/duke-git/lancet/condition"
+)
+```
+
+<div STYLE="page-break-after: always;"></div>
+
+## 目录
+
+-   [Equal](#Equal)
+-   [EqualValue](#EqualValue)
+-   [LessThan](#LessThan)
+-   [GreaterThan](#GreaterThan)
+-   [LessOrEqual](#LessOrEqual)
+-   [GreaterOrEqual](#GreaterOrEqual)
+
+<div STYLE="page-break-after: always;"></div>
+
+## Documentation
+
+### <span id="Equal">Equal</span>
+
+<p>检查两个值是否相等(检查类型和值)</p>
+
+<b>函数签名:</b>
+
+```go
+func Equal(left, right any) bool
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.Equal(1, 1)
+    result2 := compare.Equal("1", "1")
+    result3 := compare.Equal([]int{1, 2, 3}, []int{1, 2, 3})
+    result4 := compare.Equal(map[int]string{1: "a", 2: "b"}, map[int]string{1: "a", 2: "b"})
+
+    result5 := compare.Equal(1, "1")
+    result6 := compare.Equal(1, int64(1))
+    result7 := compare.Equal([]int{1, 2}, []int{1, 2, 3})
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+    fmt.Println(result7)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+    // false
+}
+```
+
+### <span id="EqualValue">EqualValue</span>
+
+<p>检查两个值是否相等(只检查值)</p>
+
+<b>函数签名:</b>
+
+```go
+func EqualValue(left, right any) bool
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.EqualValue(1, 1)
+    result2 := compare.EqualValue(int(1), int64(1))
+    result3 := compare.EqualValue(1, "1")
+    result4 := compare.EqualValue(1, "2")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // true
+    // true
+    // true
+    // false
+}
+```
+
+### <span id="LessThan">LessThan</span>
+
+<p>验证参数`left`的值是否小于参数`right`的值。</p>
+
+<b>函数签名:</b>
+
+```go
+func LessThan(left, right any) bool
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.LessThan(1, 2)
+    result2 := compare.LessThan(1.1, 2.2)
+    result3 := compare.LessThan("a", "b")
+
+    time1 := time.Now()
+    time2 := time1.Add(time.Second)
+    result4 := compare.LessThan(time1, time2)
+
+    result5 := compare.LessThan(2, 1)
+    result6 := compare.LessThan(1, int64(2))
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+}
+```
+
+### <span id="GreaterThan">GreaterThan</span>
+
+<p>验证参数`left`的值是否大于参数`right`的值。</p>
+
+<b>函数签名:</b>
+
+```go
+func GreaterThan(left, right any) bool
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.GreaterThan(2, 1)
+    result2 := compare.GreaterThan(2.2, 1.1)
+    result3 := compare.GreaterThan("b", "a")
+
+    time1 := time.Now()
+    time2 := time1.Add(time.Second)
+    result4 := compare.GreaterThan(time2, time1)
+
+    result5 := compare.GreaterThan(1, 2)
+    result6 := compare.GreaterThan(int64(2), 1)
+    result7 := compare.GreaterThan("b", "c")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+    fmt.Println(result7)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+    // false
+}
+```
+
+### <span id="LessOrEqual">LessOrEqual</span>
+
+<p>验证参数`left`的值是否小于或等于参数`right`的值。</p>
+
+<b>函数签名:</b>
+
+```go
+func LessOrEqual(left, right any) bool
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.LessOrEqual(1, 1)
+    result2 := compare.LessOrEqual(1.1, 2.2)
+    result3 := compare.LessOrEqual("a", "b")
+
+    time1 := time.Now()
+    time2 := time1.Add(time.Second)
+    result4 := compare.LessOrEqual(time1, time2)
+
+    result5 := compare.LessOrEqual(2, 1)
+    result6 := compare.LessOrEqual(1, int64(2))
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+}
+```
+
+### <span id="GreaterOrEqual">GreaterOrEqual</span>
+
+<p>验证参数`left`的值是否大于或参数`right`的值。</p>
+
+<b>函数签名:</b>
+
+```go
+func GreaterOrEqual(left, right any) bool
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.GreaterOrEqual(1, 1)
+    result2 := compare.GreaterOrEqual(2.2, 1.1)
+    result3 := compare.GreaterOrEqual("b", "b")
+
+    time1 := time.Now()
+    time2 := time1.Add(time.Second)
+    result4 := compare.GreaterOrEqual(time2, time1)
+
+    result5 := compare.GreaterOrEqual(1, 2)
+    result6 := compare.GreaterOrEqual(int64(2), 1)
+    result7 := compare.GreaterOrEqual("b", "c")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+    fmt.Println(result7)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+    // false
+}
+```
--- a/docs/convertor.md
+++ b/docs/convertor.md
@@ -1,41 +1,51 @@
 # Convertor
+
 Package convertor contains some functions for data type convertion.

 <div STYLE="page-break-after: always;"></div>

 ## Source:

- [https://github.com/duke-git/lancet/blob/main/convertor/convertor.go](https://github.com/duke-git/lancet/blob/main/convertor/convertor.go)
+[https://github.com/duke-git/lancet/blob/v1/convertor/convertor.go](https://github.com/duke-git/lancet/blob/v1/convertor/convertor.go)

 <div STYLE="page-break-after: always;"></div>

 ## Usage:
+
 ```go
 import (
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )
 ```

 <div STYLE="page-break-after: always;"></div>

 ## Index
- [ColorHexToRGB](#ColorHexToRGB)
- [ColorRGBToHex](#ColorRGBToHex)
- [ToBool](#ToBool)
- [ToBytes](#ToBytes)
- [ToChar](#ToChar)
- [ToInt](#ToInt)
- [ToJson](#ToJson)
- [ToString](#ToString)
- [StructToMap](#StructToMap)
+
+-   [ColorHexToRGB](#ColorHexToRGB)
+-   [ColorRGBToHex](#ColorRGBToHex)
+-   [ToBool](#ToBool)
+-   [ToBytes](#ToBytes)
+-   [ToChar](#ToChar)
+-   [ToChannel](#ToChannel)
+-   [ToFloat](#ToFloat)
+-   [ToInt](#ToInt)
+-   [ToJson](#ToJson)
+-   [ToString](#ToString)
+-   [StructToMap](#StructToMap)
+-   [EncodeByte](#EncodeByte)
+-   [DecodeByte](#DecodeByte)
+-   [DeepClone](#DeepClone)
+-   [CopyProperties](#CopyProperties)
+-   [ToInterface](#ToInterface)
+

 <div STYLE="page-break-after: always;"></div>

 ## Documentation

-
-
 ### <span id="ColorHexToRGB">ColorHexToRGB</span>
+
 <p>Convert color hex to color rgb.</p>

 <b>Signature:</b>
@@ -43,6 +53,7 @@ import (
 ```go
 func ColorHexToRGB(colorHex string) (red, green, blue int)
 ```
+
 <b>Example:</b>

 ```go
@@ -50,18 +61,16 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
    colorHex := "#003366"
-    r, g, b := convertor.ColorHexToRGB(colorHex)
+    r, g, b := ColorHexToRGB(colorHex)
    fmt.Println(r, g, b) //0,51,102
 }
 ```

-
-
 ### <span id="ColorRGBToHex">ColorRGBToHex</span>

 <p>Convert color rgb to color hex.</p>
@@ -71,6 +80,7 @@ func main() {
 ```go
 func ColorRGBToHex(red, green, blue int) string
 ```
+
 <b>Example:</b>

 ```go
@@ -78,21 +88,19 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
    r := 0
    g := 51
    b := 102
-    colorHex := convertor.ColorRGBToHex(r, g, b)
+    colorHex := ColorRGBToHex(r, g, b)

    fmt.Println(colorHex) //#003366
 }
 ```

-
-
 ### <span id="ToBool">ToBool</span>

 <p>Convert string to a boolean value. Use strconv.ParseBool</p>
@@ -102,6 +110,7 @@ func main() {
 ```go
 func ToBool(s string) (bool, error)
 ```
+
 <b>Example:</b>

 ```go
@@ -109,7 +118,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
@@ -127,8 +136,6 @@ func main() {
 }
 ```

-
-
 ### <span id="ToBytes">ToBytes</span>

 <p>Convert interface to byte slice.</p>
@@ -136,8 +143,9 @@ func main() {
 <b>Signature:</b>

 ```go
-func ToBytes(data any) ([]byte, error)
+func ToBytes(data interface{}) ([]byte, error)
 ```
+
 <b>Example:</b>

 ```go
@@ -145,7 +153,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
@@ -157,8 +165,6 @@ func main() {
 }
 ```

-
-
 ### <span id="ToChar">ToChar</span>

 <p>Convert string to char slice.</p>
@@ -168,6 +174,7 @@ func main() {
 ```go
 func ToChar(s string) []string
 ```
+
 <b>Example:</b>

 ```go
@@ -175,7 +182,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
@@ -190,7 +197,42 @@ func main() {
 }
 ```

+### <span id="ToChannel">ToChannel</span>

+<p>Convert a collection of elements to a read-only channels.</p>
+
+<b>Signature:</b>
+
+```go
+func ToChannel(array []interface{}) <-chan interface{}
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    ch := convertor.ToChannel([]int{1, 2, 3})
+
+    val1, _ := <-ch
+    fmt.Println(val1) //1
+
+    val2, _ := <-ch
+    fmt.Println(val2) //2
+
+    val3, _ := <-ch
+    fmt.Println(val3) //3
+
+    _, ok := <-ch
+    fmt.Println(ok) //false
+}
+```

 ### <span id="ToFloat">ToFloat</span>

@@ -199,8 +241,9 @@ func main() {
 <b>Signature:</b>

 ```go
-func ToFloat(value any) (float64, error)
+func ToFloat(value interface{}) (float64, error)
 ```
+
 <b>Example:</b>

 ```go
@@ -208,7 +251,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
@@ -223,8 +266,6 @@ func main() {
 }
 ```

-
-
 ### <span id="ToInt">ToInt</span>

 <p>Convert interface to a int64 value. If param is a invalid intable, will return 0 and error. </p>
@@ -232,8 +273,9 @@ func main() {
 <b>Signature:</b>

 ```go
-func ToInt(value any) (int64, error)
+func ToInt(value interface{}) (int64, error)
 ```
+
 <b>Example:</b>

 ```go
@@ -241,7 +283,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
@@ -256,8 +298,6 @@ func main() {
 }
 ```

-
-
 ### <span id="ToJson">ToJson</span>

 <p>Convert interface to json string. If param can't be converted, will return "" and error. </p>
@@ -265,8 +305,9 @@ func main() {
 <b>Signature:</b>

 ```go
-func ToJson(value any) (string, error)
+func ToJson(value interface{}) (string, error)
 ```
+
 <b>Example:</b>

 ```go
@@ -274,7 +315,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
@@ -284,8 +325,6 @@ func main() {
 }
 ```

-
-
 ### <span id="ToString">ToString</span>

 <p>Convert interface to string. </p>
@@ -293,8 +332,9 @@ func main() {
 <b>Signature:</b>

 ```go
-func ToString(value any) string
+func ToString(value interface{}) string
 ```
+
 <b>Example:</b>

 ```go
@@ -302,7 +342,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
@@ -312,8 +352,6 @@ func main() {
 }
 ```

-
-
 ### <span id="StructToMap">StructToMap</span>

 <p>Convert struct to map, only convert exported field, struct field tag `json` should be set.</p>
@@ -321,8 +359,9 @@ func main() {
 <b>Signature:</b>

 ```go
-func StructToMap(value any) (map[string]any, error)
+func StructToMap(value interface{}) (map[string]interface{}, error)
 ```
+
 <b>Example:</b>

 ```go
@@ -330,7 +369,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
@@ -346,4 +385,236 @@ func main() {

    fmt.Printf("type: %T, value: %s", pm, pm) //type: map[string]interface {}, value: map[name:test]
 }
+```
+
+### <span id="EncodeByte">EncodeByte</span>
+
+<p>Encode data to byte slice.</p>
+
+<b>Signature:</b>
+
+```go
+func EncodeByte(data any) ([]byte, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    byteData, _ := convertor.EncodeByte("abc")
+    fmt.Println(byteData) //[]byte{6, 12, 0, 3, 97, 98, 99}
+}
+```
+
+### <span id="DecodeByte">DecodeByte</span>
+
+<p>Decode byte data to target object. target should be a pointer instance.</p>
+
+<b>Signature:</b>
+
+```go
+func DecodeByte(data []byte, target any) error
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    var result string
+    byteData := []byte{6, 12, 0, 3, 97, 98, 99}
+    convertor.DecodeByte(byteData, &result)
+    fmt.Println(result) //"abc"
+}
+```
+
+### <span id="DeepClone">DeepClone</span>
+
+<p>Creates a deep copy of passed item, can't clone unexported field of struct.</p>
+
+<b>Signature:</b>
+
+```go
+func DeepClone[T any](src T) T
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    type Struct struct {
+        Str        string
+        Int        int
+        Float      float64
+        Bool       bool
+        Nil        interface{}
+        unexported string
+    }
+
+    cases := []interface{}{
+        true,
+        1,
+        0.1,
+        map[string]int{
+            "a": 1,
+            "b": 2,
+        },
+        &Struct{
+            Str:   "test",
+            Int:   1,
+            Float: 0.1,
+            Bool:  true,
+            Nil:   nil,
+            // unexported: "can't be cloned",
+        },
+    }
+
+    for _, item := range cases {
+        cloned := convertor.DeepClone(item)
+
+        isPointerEqual := &cloned == &item
+        fmt.Println(cloned, isPointerEqual)
+    }
+
+    // Output:
+    // true false
+    // 1 false
+    // 0.1 false
+    // map[a:1 b:2] false
+    // &{test 1 0.1 true <nil> } false
+}
+```
+
+### <span id="CopyProperties">CopyProperties</span>
+
+<p>Copies each field from the source struct into the destination struct. Use json.Marshal/Unmarshal, so json tag should be set for fields of dst and src struct.</p>
+
+<b>Signature:</b>
+
+```go
+func CopyProperties(dst, src interface{}) error
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    type Disk struct {
+        Name    string  `json:"name"`
+        Total   string  `json:"total"`
+        Used    string  `json:"used"`
+        Percent float64 `json:"percent"`
+    }
+
+    type DiskVO struct {
+        Name    string  `json:"name"`
+        Total   string  `json:"total"`
+        Used    string  `json:"used"`
+        Percent float64 `json:"percent"`
+    }
+
+    type Indicator struct {
+        Id      string    `json:"id"`
+        Ip      string    `json:"ip"`
+        UpTime  string    `json:"upTime"`
+        LoadAvg string    `json:"loadAvg"`
+        Cpu     int       `json:"cpu"`
+        Disk    []Disk    `json:"disk"`
+        Stop    chan bool `json:"-"`
+    }
+
+    type IndicatorVO struct {
+        Id      string   `json:"id"`
+        Ip      string   `json:"ip"`
+        UpTime  string   `json:"upTime"`
+        LoadAvg string   `json:"loadAvg"`
+        Cpu     int64    `json:"cpu"`
+        Disk    []DiskVO `json:"disk"`
+    }
+
+    indicator := &Indicator{Id: "001", Ip: "127.0.0.1", Cpu: 1, Disk: []Disk{
+        {Name: "disk-001", Total: "100", Used: "1", Percent: 10},
+        {Name: "disk-002", Total: "200", Used: "1", Percent: 20},
+        {Name: "disk-003", Total: "300", Used: "1", Percent: 30},
+    }}
+
+    indicatorVO := IndicatorVO{}
+
+    err := convertor.CopyProperties(&indicatorVO, indicator)
+
+    if err != nil {
+        return
+    }
+
+    fmt.Println(indicatorVO.Id)
+    fmt.Println(indicatorVO.Ip)
+    fmt.Println(len(indicatorVO.Disk))
+
+    // Output:
+    // 001
+    // 127.0.0.1
+    // 3
+}
+```
+
+### <span id="ToInterface">ToInterface</span>
+
+<p>Converts reflect value to its interface type.</p>
+
+<b>Signature:</b>
+
+```go
+func ToInterface(v reflect.Value) (value interface{}, ok bool)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    val := reflect.ValueOf("abc")
+	iVal, ok := convertor.ToInterface(val)
+
+	fmt.Printf("%T\n", iVal)
+	fmt.Printf("%v\n", iVal)
+	fmt.Println(ok)
+
+	// Output:
+	// string
+	// abc
+	// true    
+}
 ```
--- a/docs/convertor_zh-CN.md
+++ b/docs/convertor_zh-CN.md
@@ -1,11 +1,12 @@
 # Convertor
-convertor转换器包支持一些常见的数据类型转换
+
+convertor 转换器包支持一些常见的数据类型转换

 <div STYLE="page-break-after: always;"></div>

 ## 源码:

- [https://github.com/duke-git/lancet/blob/main/convertor/convertor.go](https://github.com/duke-git/lancet/blob/main/convertor/convertor.go)
+[https://github.com/duke-git/lancet/blob/v1/convertor/convertor.go](https://github.com/duke-git/lancet/blob/v1/convertor/convertor.go)

 <div STYLE="page-break-after: always;"></div>

@@ -13,7 +14,7 @@ convertor转换器包支持一些常见的数据类型转换

 ```go
 import (
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )
 ```

@@ -21,23 +22,29 @@ import (

 ## 目录

- [ColorHexToRGB](#ColorHexToRGB)
- [ColorRGBToHex](#ColorRGBToHex)
- [ToBool](#ToBool)
- [ToBytes](#ToBytes)
- [ToChar](#ToChar)
- [ToInt](#ToInt)
- [ToJson](#ToJson)
- [ToString](#ToString)
- [StructToMap](#StructToMap)
+-   [ColorHexToRGB](#ColorHexToRGB)
+-   [ColorRGBToHex](#ColorRGBToHex)
+-   [ToBool](#ToBool)
+-   [ToBytes](#ToBytes)
+-   [ToChar](#ToChar)
+-   [ToChannel](#ToChannel)
+-   [ToFloat](#ToFloat)
+-   [ToInt](#ToInt)
+-   [ToJson](#ToJson)
+-   [ToString](#ToString)
+-   [StructToMap](#StructToMap)
+-   [EncodeByte](#EncodeByte)
+-   [DecodeByte](#DecodeByte)
+-   [DeepClone](#DeepClone)
+-   [CopyProperties](#CopyProperties)
+-   [ToInterface](#ToInterface)

 <div STYLE="page-break-after: always;"></div>

 ## 文档

-
-
 ### <span id="ColorHexToRGB">ColorHexToRGB</span>
+
 <p>颜色值十六进制转rgb</p>

 <b>函数签名:</b>
@@ -45,6 +52,7 @@ import (
 ```go
 func ColorHexToRGB(colorHex string) (red, green, blue int)
 ```
+
 <b>列子:</b>

 ```go
@@ -52,18 +60,16 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
    colorHex := "#003366"
-    r, g, b := convertor.ColorHexToRGB(colorHex)
+    r, g, b := ColorHexToRGB(colorHex)
    fmt.Println(r, g, b) //0,51,102
 }
 ```

-
-
 ### <span id="ColorRGBToHex">ColorRGBToHex</span>

 <p>颜色值rgb转十六进制</p>
@@ -73,6 +79,7 @@ func main() {
 ```go
 func ColorRGBToHex(red, green, blue int) string
 ```
+
 <b>列子:</b>

 ```go
@@ -80,21 +87,19 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
    r := 0
    g := 51
    b := 102
-    colorHex := convertor.ColorRGBToHex(r, g, b)
+    colorHex := ColorRGBToHex(r, g, b)

    fmt.Println(colorHex) //#003366
 }
 ```

-
-
 ### <span id="ToBool">ToBool</span>

 <p>字符串转布尔类型，使用strconv.ParseBool</p>
@@ -104,6 +109,7 @@ func main() {
 ```go
 func ToBool(s string) (bool, error)
 ```
+
 <b>列子:</b>

 ```go
@@ -111,7 +117,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
@@ -129,8 +135,6 @@ func main() {
 }
 ```

-
-
 ### <span id="ToBytes">ToBytes</span>

 <p>interface转字节切片.</p>
@@ -138,8 +142,9 @@ func main() {
 <b>函数签名:</b>

 ```go
-func ToBytes(data any) ([]byte, error)
+func ToBytes(data interface{}) ([]byte, error)
 ```
+
 <b>列子:</b>

 ```go
@@ -147,7 +152,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
@@ -159,8 +164,6 @@ func main() {
 }
 ```

-
-
 ### <span id="ToChar">ToChar</span>

 <p>字符串转字符切片</p>
@@ -170,6 +173,7 @@ func main() {
 ```go
 func ToChar(s string) []string
 ```
+
 <b>列子:</b>

 ```go
@@ -177,7 +181,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
@@ -192,7 +196,42 @@ func main() {
 }
 ```

+### <span id="ToChannel">ToChannel</span>

+<p>将切片转为只读channel</p>
+
+<b>函数签名:</b>
+
+```go
+func ToChannel(array []interface{}) <-chan interface{}
+```
+
+<b>例子:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    ch := convertor.ToChannel([]int{1, 2, 3})
+
+    val1, _ := <-ch
+    fmt.Println(val1) //1
+
+    val2, _ := <-ch
+    fmt.Println(val2) //2
+
+    val3, _ := <-ch
+    fmt.Println(val3) //3
+
+    _, ok := <-ch
+    fmt.Println(ok) //false
+}
+```

 ### <span id="ToFloat">ToFloat</span>

@@ -201,8 +240,9 @@ func main() {
 <b>函数签名:</b>

 ```go
-func ToFloat(value any) (float64, error)
+func ToFloat(value interface{}) (float64, error)
 ```
+
 <b>列子:</b>

 ```go
@@ -210,7 +250,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
@@ -225,8 +265,6 @@ func main() {
 }
 ```

-
-
 ### <span id="ToInt">ToInt</span>

 <p>将interface转成intt64类型，如果参数无法转换，会返回0和error</p>
@@ -234,8 +272,9 @@ func main() {
 <b>函数签名:</b>

 ```go
-func ToInt(value any) (int64, error)
+func ToInt(value interface{}) (int64, error)
 ```
+
 <b>例子:</b>

 ```go
@@ -243,7 +282,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
@@ -258,8 +297,6 @@ func main() {
 }
 ```

-
-
 ### <span id="ToJson">ToJson</span>

 <p>将interface转成json字符串，如果参数无法转换，会返回""和error</p>
@@ -267,8 +304,9 @@ func main() {
 <b>函数签名:</b>

 ```go
-func ToJson(value any) (string, error)
+func ToJson(value interface{}) (string, error)
 ```
+
 <b>列子:</b>

 ```go
@@ -276,7 +314,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
@@ -286,8 +324,6 @@ func main() {
 }
 ```

-
-
 ### <span id="ToString">ToString</span>

 <p>将interface转成字符串</p>
@@ -295,8 +331,9 @@ func main() {
 <b>函数签名:</b>

 ```go
-func ToString(value any) string
+func ToString(value interface{}) string
 ```
+
 <b>例子:</b>

 ```go
@@ -304,7 +341,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
@@ -314,8 +351,6 @@ func main() {
 }
 ```

-
-
 ### <span id="StructToMap">StructToMap</span>

 <p>将struct转成map，只会转换struct中可导出的字段。struct中导出字段需要设置json tag标记</p>
@@ -323,8 +358,9 @@ func main() {
 <b>函数签名:</b>

 ```go
-func StructToMap(value any) (map[string]any, error)
+func StructToMap(value interface{}) (map[string]interface{}, error)
 ```
+
 <b>列子:</b>

 ```go
@@ -332,7 +368,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )

 func main() {
@@ -348,4 +384,237 @@ func main() {

    fmt.Printf("type: %T, value: %s", pm, pm) //type: map[string]interface {}, value: map[name:test]
 }
+```
+
+### <span id="EncodeByte">EncodeByte</span>
+
+<p>将data编码成字节切片</p>
+
+<b>函数签名:</b>
+
+```go
+func EncodeByte(data any) ([]byte, error)
+```
+
+<b>例子:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    byteData, _ := convertor.EncodeByte("abc")
+    fmt.Println(byteData) //[]byte{6, 12, 0, 3, 97, 98, 99}
+}
+```
+
+### <span id="DecodeByte">DecodeByte</span>
+
+<p>解码字节切片到目标对象，目标对象需要传入一个指针实例子</p>
+
+<b>函数签名:</b>
+
+```go
+func DecodeByte(data []byte, target any) error
+```
+
+<b>例子:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    var result string
+    byteData := []byte{6, 12, 0, 3, 97, 98, 99}
+    convertor.DecodeByte(byteData, &result)
+    fmt.Println(result) //"abc"
+}
+```
+
+### <span id="DeepClone">DeepClone</span>
+
+<p>创建一个传入值的深拷贝, 无法克隆结构体的非导出字段。</p>
+
+<b>函数签名:</b>
+
+```go
+func DeepClone[T any](src T) T
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    type Struct struct {
+        Str        string
+        Int        int
+        Float      float64
+        Bool       bool
+        Nil        interface{}
+        unexported string
+    }
+
+    cases := []interface{}{
+        true,
+        1,
+        0.1,
+        map[string]int{
+            "a": 1,
+            "b": 2,
+        },
+        &Struct{
+            Str:   "test",
+            Int:   1,
+            Float: 0.1,
+            Bool:  true,
+            Nil:   nil,
+            // unexported: "can't be cloned",
+        },
+    }
+
+    for _, item := range cases {
+        cloned := convertor.DeepClone(item)
+
+        isPointerEqual := &cloned == &item
+        fmt.Println(cloned, isPointerEqual)
+    }
+
+    // Output:
+    // true false
+    // 1 false
+    // 0.1 false
+    // map[a:1 b:2] false
+    // &{test 1 0.1 true <nil> } false
+}
+```
+
+
+### <span id="CopyProperties">CopyProperties</span>
+
+<p>拷贝不同结构体之间的同名字段。使用json.Marshal序列化，需要设置dst和src struct字段的json tag。</p>
+
+<b>函数签名:</b>
+
+```go
+func CopyProperties(dst, src interface{}) error
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    type Disk struct {
+        Name    string  `json:"name"`
+        Total   string  `json:"total"`
+        Used    string  `json:"used"`
+        Percent float64 `json:"percent"`
+    }
+
+    type DiskVO struct {
+        Name    string  `json:"name"`
+        Total   string  `json:"total"`
+        Used    string  `json:"used"`
+        Percent float64 `json:"percent"`
+    }
+
+    type Indicator struct {
+        Id      string    `json:"id"`
+        Ip      string    `json:"ip"`
+        UpTime  string    `json:"upTime"`
+        LoadAvg string    `json:"loadAvg"`
+        Cpu     int       `json:"cpu"`
+        Disk    []Disk    `json:"disk"`
+        Stop    chan bool `json:"-"`
+    }
+
+    type IndicatorVO struct {
+        Id      string   `json:"id"`
+        Ip      string   `json:"ip"`
+        UpTime  string   `json:"upTime"`
+        LoadAvg string   `json:"loadAvg"`
+        Cpu     int64    `json:"cpu"`
+        Disk    []DiskVO `json:"disk"`
+    }
+
+    indicator := &Indicator{Id: "001", Ip: "127.0.0.1", Cpu: 1, Disk: []Disk{
+        {Name: "disk-001", Total: "100", Used: "1", Percent: 10},
+        {Name: "disk-002", Total: "200", Used: "1", Percent: 20},
+        {Name: "disk-003", Total: "300", Used: "1", Percent: 30},
+    }}
+
+    indicatorVO := IndicatorVO{}
+
+    err := convertor.CopyProperties(&indicatorVO, indicator)
+
+    if err != nil {
+        return
+    }
+
+    fmt.Println(indicatorVO.Id)
+    fmt.Println(indicatorVO.Ip)
+    fmt.Println(len(indicatorVO.Disk))
+
+    // Output:
+    // 001
+    // 127.0.0.1
+    // 3
+}
+```
+
+### <span id="ToInterface">ToInterface</span>
+
+<p>将反射值转换成对应的interface类型。</p>
+
+<b>函数签名:</b>
+
+```go
+func ToInterface(v reflect.Value) (value interface{}, ok bool)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    val := reflect.ValueOf("abc")
+	iVal, ok := convertor.ToInterface(val)
+
+	fmt.Printf("%T\n", iVal)
+	fmt.Printf("%v\n", iVal)
+	fmt.Println(ok)
+
+	// Output:
+	// string
+	// abc
+	// true    
+}
 ```
--- a/docs/cryptor.md
+++ b/docs/cryptor.md
@@ -1,21 +1,23 @@
 # Cryptor
+
 Package cryptor contains some functions for data encryption and decryption. Support base64, md5, hmac, aes, des, rsa.

 <div STYLE="page-break-after: always;"></div>

 ## Source:

- [https://github.com/duke-git/lancet/blob/main/cryptor/aes.go](https://github.com/duke-git/lancet/blob/main/cryptor/aes.go)
- [https://github.com/duke-git/lancet/blob/main/cryptor/des.go](https://github.com/duke-git/lancet/blob/main/cryptor/des.go)
- [https://github.com/duke-git/lancet/blob/main/cryptor/basic.go](https://github.com/duke-git/lancet/blob/main/cryptor/basic.go)
- [https://github.com/duke-git/lancet/blob/main/cryptor/rsa.go](https://github.com/duke-git/lancet/blob/main/cryptor/rsa.go)
+-   [https://github.com/duke-git/lancet/blob/v1/cryptor/aes.go](https://github.com/duke-git/lancet/blob/v1/cryptor/aes.go)
+-   [https://github.com/duke-git/lancet/blob/v1/cryptor/des.go](https://github.com/duke-git/lancet/blob/v1/cryptor/des.go)
+-   [https://github.com/duke-git/lancet/blob/v1/cryptor/basic.go](https://github.com/duke-git/lancet/blob/v1/cryptor/basic.go)
+-   [https://github.com/duke-git/lancet/blob/v1/cryptor/rsa.go](https://github.com/duke-git/lancet/blob/v1/cryptor/rsa.go)

 <div STYLE="page-break-after: always;"></div>

 ## Usage:
+
 ```go
 import (
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )
 ```

@@ -23,47 +25,43 @@ import (

 ## Index

- [AesEcbEncrypt](#AesEcbEncrypt)
- [AesEcbDecrypt](#AesEcbDecrypt)
- [AesCbcEncrypt](#AesCbcEncrypt)
- [AesCbcDecrypt](#AesCbcDecrypt)
- [AesCtrCrypt](#AesCtrCrypt)
- [AesCfbEncrypt](#AesCfbEncrypt)
- [AesCfbDecrypt](#AesCfbDecrypt)
- [AesOfbEncrypt](#AesOfbEncrypt)
- [AesOfbDecrypt](#AesOfbDecrypt)
- [Base64StdEncode](#Base64StdEncode)
- [Base64StdDecode](#Base64StdDecode)
- [DesEcbEncrypt](#DesEcbEncrypt)
- [DesEcbDecrypt](#DesEcbDecrypt)
- [DesCbcEncrypt](#DesCbcEncrypt)
- [DesCbcDecrypt](#DesCbcDecrypt)
- [DesCtrCrypt](#DesCtrCrypt)
- [DesCfbEncrypt](#DesCfbEncrypt)
- [DesCfbDecrypt](#DesCfbDecrypt)
- [DesOfbEncrypt](#DesOfbEncrypt)
- [DesOfbDecrypt](#DesOfbDecrypt)
- [HmacMd5](#HmacMd5)
- [HmacSha1](#HmacSha1)
- [HmacSha256](#HmacSha256)
- [HmacSha512](#HmacSha512)
-
- [Md5String](#Md5String)
- [Md5File](#Md5File)
- [Sha1](#Sha1)
- [Sha256](#Sha256)
- [Sha512](#Sha512)
- [GenerateRsaKey](#GenerateRsaKey)
- [RsaEncrypt](#RsaEncrypt)
- [RsaDecrypt](#RsaDecrypt)
-
+-   [AesEcbEncrypt](#AesEcbEncrypt)
+-   [AesEcbDecrypt](#AesEcbDecrypt)
+-   [AesCbcEncrypt](#AesCbcEncrypt)
+-   [AesCbcDecrypt](#AesCbcDecrypt)
+-   [AesCtrCrypt](#AesCtrCrypt)
+-   [AesCfbEncrypt](#AesCfbEncrypt)
+-   [AesCfbDecrypt](#AesCfbDecrypt)
+-   [AesOfbEncrypt](#AesOfbEncrypt)
+-   [AesOfbDecrypt](#AesOfbDecrypt)
+-   [Base64StdEncode](#Base64StdEncode)
+-   [Base64StdDecode](#Base64StdDecode)
+-   [DesEcbEncrypt](#DesEcbEncrypt)
+-   [DesEcbDecrypt](#DesEcbDecrypt)
+-   [DesCbcEncrypt](#DesCbcEncrypt)
+-   [DesCbcDecrypt](#DesCbcDecrypt)
+-   [DesCtrCrypt](#DesCtrCrypt)
+-   [DesCfbEncrypt](#DesCfbEncrypt)
+-   [DesCfbDecrypt](#DesCfbDecrypt)
+-   [DesOfbEncrypt](#DesOfbEncrypt)
+-   [DesOfbDecrypt](#DesOfbDecrypt)
+-   [HmacMd5](#HmacMd5)
+-   [HmacSha1](#HmacSha1)
+-   [HmacSha256](#HmacSha256)
+-   [HmacSha512](#HmacSha512)
+-   [Md5String](#Md5String)
+-   [Md5File](#Md5File)
+-   [Sha1](#Sha1)
+-   [Sha256](#Sha256)
+-   [Sha512](#Sha512)
+-   [GenerateRsaKey](#GenerateRsaKey)
+-   [RsaEncrypt](#RsaEncrypt)
+-   [RsaDecrypt](#RsaDecrypt)

 <div STYLE="page-break-after: always;"></div>

 ## Documentation

-
-
 ### <span id="AesEcbEncrypt">AesEcbEncrypt</span>

 <p>Encrypt data with key use AES ECB algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -73,6 +71,7 @@ import (
 ```go
 func AesEcbEncrypt(data, key []byte) []byte
 ```
+
 <b>Example:</b>

 ```go
@@ -80,20 +79,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefghijklmnop"
+      key := "abcdefghijklmnop"
    encrypted := cryptor.AesEcbEncrypt([]byte(data), []byte(key))

    fmt.Println(string(encrypted))
 }
 ```

-
-
 ### <span id="AesEcbDecrypt">AesEcbDecrypt</span>

 <p>Decrypt data with key use AES ECB algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -103,6 +100,7 @@ func main() {
 ```go
 func AesEcbDecrypt(encrypted, key []byte) []byte
 ```
+
 <b>Example:</b>

 ```go
@@ -110,20 +108,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefghijklmnop"
+    key := "abcdefghijklmnop"
    encrypted := cryptor.AesEcbEncrypt([]byte(data), []byte(key))
-	decrypted := cryptor.AesEcbDecrypt(encrypted, []byte(key))
+    decrypted := cryptor.AesEcbDecrypt(encrypted, []byte(key))
    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="AesCbcEncrypt">AesCbcEncrypt</span>

 <p>Encrypt data with key use AES CBC algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -133,6 +129,7 @@ func main() {
 ```go
 func AesCbcEncrypt(data, key []byte) []byte
 ```
+
 <b>Example:</b>

 ```go
@@ -140,20 +137,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefghijklmnop"
+    key := "abcdefghijklmnop"
    encrypted := cryptor.AesCbcEncrypt([]byte(data), []byte(key))

    fmt.Println(string(encrypted))
 }
 ```

-
-
 ### <span id="AesCbcDecrypt">AesCbcDecrypt</span>

 <p>Decrypt data with key use AES CBC algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -171,20 +166,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefghijklmnop"
+    key := "abcdefghijklmnop"
    encrypted := cryptor.AesCbcEncrypt([]byte(data), []byte(key))
-	decrypted := cryptor.AesCbcDecrypt(encrypted, []byte(key))
+    decrypted := cryptor.AesCbcDecrypt(encrypted, []byte(key))
    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="AesCtrCrypt">AesCtrCrypt</span>

 <p>Encrypt or decrypt data with key use AES CTR algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -202,12 +195,12 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefghijklmnop"
+    key := "abcdefghijklmnop"
    encrypted := cryptor.AesCtrCrypt([]byte(data), []byte(key))
    decrypted := cryptor.AesCtrCrypt(encrypted, []byte(key))

@@ -215,8 +208,6 @@ func main() {
 }
 ```

-
-
 ### <span id="AesCfbEncrypt">AesCfbEncrypt</span>

 <p>Encrypt data with key use AES CFB algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -234,19 +225,17 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefghijklmnop"
+    key := "abcdefghijklmnop"
    encrypted := cryptor.AesCfbEncrypt([]byte(data), []byte(key))
    fmt.Println(string(encrypted))
 }
 ```

-
-
 ### <span id="AesCfbDecrypt">AesCfbDecrypt</span>

 <p>Decrypt data with key use AES CBC algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -264,20 +253,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
    key := "abcdefghijklmnop"
    encrypted := cryptor.AesCfbEncrypt([]byte(data), []byte(key))
-	decrypted := cryptor.AesCfbDecrypt(encrypted, []byte(key))
+    decrypted := cryptor.AesCfbDecrypt(encrypted, []byte(key))
    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="AesOfbEncrypt">AesOfbEncrypt</span>

 <p>Enecrypt data with key use AES OFB algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -295,19 +282,17 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefghijklmnop"
+    key := "abcdefghijklmnop"
    encrypted := cryptor.AesOfbEncrypt([]byte(data), []byte(key))
    fmt.Println(string(encrypted))
 }
 ```

-
-
 ### <span id="AesCfbDecrypt">AesOfbDecrypt</span>

 <p>Decrypt data with key use AES OFB algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -325,21 +310,19 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefghijklmnop"
+    key := "abcdefghijklmnop"
    encrypted := cryptor.AesOfbEncrypt([]byte(data), []byte(key))
-	decrypted := cryptor.AesOfbDecrypt(encrypted, []byte(key))
-    
+    decrypted := cryptor.AesOfbDecrypt(encrypted, []byte(key))
+
    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="Base64StdEncode">Base64StdEncode</span>

 <p>Encode string with base64 encoding.</p>
@@ -349,6 +332,7 @@ func main() {
 ```go
 func Base64StdEncode(s string) string
 ```
+
 <b>Example:</b>

 ```go
@@ -356,17 +340,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	base64Str := cryptor.Base64StdEncode("hello world")
+    base64Str := cryptor.Base64StdEncode("hello world")
    fmt.Println(base64Str) //aGVsbG8gd29ybGQ=
 }
 ```

-
-
 ### <span id="Base64StdDecode">Base64StdDecode</span>

 <p>Decode a base64 encoded string.</p>
@@ -384,7 +366,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
@@ -393,8 +375,6 @@ func main() {
 }
 ```

-
-
 ### <span id="DesEcbEncrypt">DesEcbEncrypt</span>

 <p>Encrypt data with key use DES ECB algorithm. Length of `key` param should be 8.</p>
@@ -412,20 +392,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesEcbEncrypt([]byte(data), []byte(key))

    fmt.Println(string(encrypted))
 }
 ```

-
-
 ### <span id="DesEcbDecrypt">DesEcbDecrypt</span>

 <p>Decrypt data with key use DES ECB algorithm. Length of `key` param should be 8.</p>
@@ -443,21 +421,19 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesEcbEncrypt([]byte(data), []byt(key)
-	decrypted := cryptor.DesEcbDecrypt(encrypted, []byte(key))
-  
+    decrypted := cryptor.DesEcbDecrypt(encrypted, []byte(key))
+
    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="DesCbcEncrypt">DesCbcEncrypt</span>

 <p>Encrypt data with key use DES CBC algorithm. Length of `key` param should be 8.</p>
@@ -475,20 +451,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesCbcEncrypt([]byte(data), []byt(key)

    fmt.Println(string(encrypted))
 }
 ```

-
-
 ### <span id="DesCbcDecrypt">DesCbcDecrypt</span>

 <p>Decrypt data with key use DES CBC algorithm. Length of `key` param should be 8.</p>
@@ -506,21 +480,19 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesCbcEncrypt([]byte(data), []byt(key)
-	decrypted := cryptor.DesCbcDecrypt(encrypted, []byte(key))
-    
+    decrypted := cryptor.DesCbcDecrypt(encrypted, []byte(key))
+
    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="DesCtrCrypt">DesCtrCrypt</span>

 <p>Encrypt or decrypt data with key use DES CTR algorithm. Length of `key` param should be 8.</p>
@@ -538,12 +510,12 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesCtrCrypt([]byte(data), []byte(key))
    decrypted := cryptor.DesCtrCrypt(encrypted, []byte(key))

@@ -551,8 +523,6 @@ func main() {
 }
 ```

-
-
 ### <span id="DesCfbEncrypt">DesCfbEncrypt</span>

 <p>Encrypt data with key use DES CFB algorithm. Length of `key` param should be 8.</p>
@@ -570,19 +540,17 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesCfbEncrypt([]byte(data), []byt(key)
    fmt.Println(string(encrypted))
 }
 ```

-
-
 ### <span id="DesCfbDecrypt">DesCfbDecrypt</span>

 <p>Decrypt data with key use DES CBC algorithm. Length of `key` param should be 8.</p>
@@ -600,20 +568,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesCfbEncrypt([]byte(data), []byt(key)
-	decrypted := cryptor.DesCfbDecrypt(encrypted, []byte(key))
+    decrypted := cryptor.DesCfbDecrypt(encrypted, []byte(key))
    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="DesOfbEncrypt">DesOfbEncrypt</span>

 <p>Enecrypt data with key use DES OFB algorithm. Length of `key` param should be 8.</p>
@@ -631,19 +597,17 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesOfbEncrypt([]byte(data), []byte(key))
    fmt.Println(string(encrypted))
 }
 ```

-
-
 ### <span id="DesOfbDecrypt">DesOfbDecrypt</span>

 <p>Decrypt data with key use DES OFB algorithm. Length of `key` param should be 8.</p>
@@ -661,21 +625,19 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesOfbEncrypt([]byte(data), []byte(key))
-	decrypted := cryptor.DesOfbDecrypt(encrypted, []byte(key))
-    
+    decrypted := cryptor.DesOfbDecrypt(encrypted, []byte(key))
+
    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="HmacMd5">HmacMd5</span>

 <p>Get the md5 hmac hash of string.</p>
@@ -693,17 +655,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.HmacMd5("hello world", "12345"))
-  	fmt.Println(s) //5f4c9faaff0a1ad3007d9ddc06abe36d
+    s := cryptor.HmacMd5("hello world", "12345"))
+    fmt.Println(s) //5f4c9faaff0a1ad3007d9ddc06abe36d
 }
 ```

-
-
 ### <span id="HmacSha1">HmacSha1</span>

 <p>Get the sha1 hmac hash of string.</p>
@@ -721,17 +681,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.HmacSha1("hello world", "12345"))
-  	fmt.Println(s) //3826f812255d8683f051ee97346d1359234d5dbd
+    s := cryptor.HmacSha1("hello world", "12345"))
+    fmt.Println(s) //3826f812255d8683f051ee97346d1359234d5dbd
 }
 ```

-
-
 ### <span id="HmacSha256">HmacSha256</span>

 <p>Get the sha256 hmac hash of string</p>
@@ -749,17 +707,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.HmacSha256("hello world", "12345"))
-  	fmt.Println(s) //9dce2609f2d67d41f74c7f9efc8ccd44370d41ad2de52982627588dfe7289ab8
+    s := cryptor.HmacSha256("hello world", "12345"))
+    fmt.Println(s) //9dce2609f2d67d41f74c7f9efc8ccd44370d41ad2de52982627588dfe7289ab8
 }
 ```

-
-
 ### <span id="HmacSha512">HmacSha512</span>

 <p>Get the sha512 hmac hash of string.</p>
@@ -777,18 +733,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.HmacSha512("hello world", "12345"))
-  	fmt.Println(s) 
- //5b1563ac4e9b49c9ada8ccb232588fc4f0c30fd12f756b3a0b95af4985c236ca60925253bae10ce2c6bf9af1c1679b51e5395ff3d2826c0a2c7c0d72225d4175
+    s := cryptor.HmacSha512("hello world", "12345"))
+    fmt.Println(s) //5b1563ac4e9b49c9ada8ccb232588fc4f0c30fd12f756b3a0b95af4985c236ca60925253bae10ce2c6bf9af1c1679b51e5395ff3d2826c0a2c7c0d72225d4175
 }
 ```

-
-
 ### <span id="Md5String">Md5String</span>

 <p>Get the md5 value of string.</p>
@@ -806,17 +759,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.Md5String("hello"))
-  	fmt.Println(s) //5d41402abc4b2a76b9719d911017c592
+    s := cryptor.Md5String("hello"))
+    fmt.Println(s) //5d41402abc4b2a76b9719d911017c592
 }
 ```

-
-
 ### <span id="Md5File">Md5File</span>

 <p>Get the md5 value of file.</p>
@@ -834,17 +785,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.Md5File("./main.go"))
-  	fmt.Println(s)
+    s := cryptor.Md5File("./main.go"))
+    fmt.Println(s)
 }
 ```

-
-
 ### <span id="Sha1">Sha1</span>

 <p>Get the sha1 value of string.</p>
@@ -862,17 +811,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.Sha1("hello world"))
-  	fmt.Println(s) //2aae6c35c94fcfb415dbe95f408b9ce91ee846ed
+    s := cryptor.Sha1("hello world"))
+    fmt.Println(s) //2aae6c35c94fcfb415dbe95f408b9ce91ee846ed
 }
 ```

-
-
 ### <span id="Sha256">Sha256</span>

 <p>Get the sha256 value of string.</p>
@@ -890,17 +837,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.Sha256("hello world"))
-  	fmt.Println(s) //b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9
+    s := cryptor.Sha256("hello world"))
+    fmt.Println(s) //b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9
 }
 ```

-
-
 ### <span id="Sha512">Sha512</span>

 <p>Get the sha512 value of string.</p>
@@ -918,17 +863,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.Sha512("hello world"))
+    s := cryptor.Sha512("hello world"))
    fmt.Println(s) //309ecc489c12d6eb4cc40f50c902f2b4d0ed77ee511a7c7a9bcd3ca86d4cd86f989dd35bc5ff499670da34255b45b0cfd830e81f605dcf7dc5542e93ae9cd76f
 }
 ```

-
-
 ### <span id="GenerateRsaKey">GenerateRsaKey</span>

 <p>Create the rsa public and private key file in current directory.</p>
@@ -946,19 +889,17 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	err := cryptor.GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
+    err := cryptor.GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
    if err != nil {
        fmt.Println(err)
-  	}
+    }
 }
 ```

-
-
 ### <span id="RsaEncrypt">RsaEncrypt</span>

 <p>Encrypt data with public key file useing ras algorithm.</p>
@@ -976,25 +917,23 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	err := cryptor.GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
+    err := cryptor.GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
    if err != nil {
        fmt.Println(err)
    }
-  	
+
    data := []byte("hello world")
-	encrypted := cryptor.RsaEncrypt(data, "rsa_public.pem")
-	decrypted := cryptor.RsaDecrypt(encrypted, "rsa_private.pem")
-  	
+    encrypted := cryptor.RsaEncrypt(data, "rsa_public.pem")
+    decrypted := cryptor.RsaDecrypt(encrypted, "rsa_private.pem")
+
    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="RsaDecrypt">RsaDecrypt</span>

 <p>Decrypt data with private key file useing ras algorithm.</p>
@@ -1012,22 +951,19 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	err := cryptor.GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
+    err := cryptor.GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
    if err != nil {
        fmt.Println(err)
-  	}
-  	
+    }
+
    data := []byte("hello world")
-	encrypted := cryptor.RsaEncrypt(data, "rsa_public.pem")
-	decrypted := cryptor.RsaDecrypt(encrypted, "rsa_private.pem")
-  	
+    encrypted := cryptor.RsaEncrypt(data, "rsa_public.pem")
+    decrypted := cryptor.RsaDecrypt(encrypted, "rsa_private.pem")
+
    fmt.Println(string(decrypted)) //hello world
 }
 ```
-
-
-
--- a/docs/cryptor_zh-CN.md
+++ b/docs/cryptor_zh-CN.md
@@ -1,69 +1,67 @@
 # Cryptor
-cryptor加密包支持数据加密和解密，获取md5，hash值。支持base64, md5, hmac, aes, des, rsa。
+
+cryptor 加密包支持数据加密和解密，获取 md5，hash 值。支持 base64, md5, hmac, aes, des, rsa。

 <div STYLE="page-break-after: always;"></div>

 ## 源码:

- [https://github.com/duke-git/lancet/blob/main/cryptor/aes.go](https://github.com/duke-git/lancet/blob/main/cryptor/aes.go)
- [https://github.com/duke-git/lancet/blob/main/cryptor/des.go](https://github.com/duke-git/lancet/blob/main/cryptor/des.go)
- [https://github.com/duke-git/lancet/blob/main/cryptor/basic.go](https://github.com/duke-git/lancet/blob/main/cryptor/basic.go)
- [https://github.com/duke-git/lancet/blob/main/cryptor/rsa.go](https://github.com/duke-git/lancet/blob/main/cryptor/rsa.go)
+-   [https://github.com/duke-git/lancet/blob/v1/cryptor/aes.go](https://github.com/duke-git/lancet/blob/v1/cryptor/aes.go)
+-   [https://github.com/duke-git/lancet/blob/v1/cryptor/des.go](https://github.com/duke-git/lancet/blob/v1/cryptor/des.go)
+-   [https://github.com/duke-git/lancet/blob/v1/cryptor/basic.go](https://github.com/duke-git/lancet/blob/v1/cryptor/basic.go)
+-   [https://github.com/duke-git/lancet/blob/v1/cryptor/rsa.go](https://github.com/duke-git/lancet/blob/v1/cryptor/rsa.go)

 <div STYLE="page-break-after: always;"></div>

 ## 用法:
+
 ```go
 import (
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )
 ```

 <div STYLE="page-break-after: always;"></div>

 ## 目录
- [AesEcbEncrypt](#AesEcbEncrypt)
- [AesEcbDecrypt](#AesEcbDecrypt)
- [AesCbcEncrypt](#AesCbcEncrypt)
- [AesCbcDecrypt](#AesCbcDecrypt)
- [AesCtrCrypt](#AesCtrCrypt)
- [AesCfbEncrypt](#AesCfbEncrypt)
- [AesCfbDecrypt](#AesCfbDecrypt)
- [AesOfbEncrypt](#AesOfbEncrypt)
- [AesOfbDecrypt](#AesOfbDecrypt)
- [Base64StdEncode](#Base64StdEncode)
- [Base64StdDecode](#Base64StdDecode)
-
- [DesEcbEncrypt](#DesEcbEncrypt)
- [DesEcbDecrypt](#DesEcbDecrypt)
- [DesCbcEncrypt](#DesCbcEncrypt)
- [DesCbcDecrypt](#DesCbcDecrypt)
- [DesCtrCrypt](#DesCtrCrypt)
- [DesCfbEncrypt](#DesCfbEncrypt)
- [DesCfbDecrypt](#DesCfbDecrypt)
- [DesOfbEncrypt](#DesOfbEncrypt)
- [DesOfbDecrypt](#DesOfbDecrypt)
-
- [HmacMd5](#HmacMd5)
- [HmacSha1](#HmacSha1)
- [HmacSha256](#HmacSha256)
- [HmacSha512](#HmacSha512)
- [Md5String](#Md5String)
- [Md5File](#Md5File)
- [Sha1](#Sha1)
- [Sha256](#Sha256)
- [Sha512](#Sha512)
- [GenerateRsaKey](#GenerateRsaKey)
- [RsaEncrypt](#RsaEncrypt)
- [RsaDecrypt](#RsaDecrypt)

+-   [AesEcbEncrypt](#AesEcbEncrypt)
+-   [AesEcbDecrypt](#AesEcbDecrypt)
+-   [AesCbcEncrypt](#AesCbcEncrypt)
+-   [AesCbcDecrypt](#AesCbcDecrypt)
+-   [AesCtrCrypt](#AesCtrCrypt)
+-   [AesCfbEncrypt](#AesCfbEncrypt)
+-   [AesCfbDecrypt](#AesCfbDecrypt)
+-   [AesOfbEncrypt](#AesOfbEncrypt)
+-   [AesOfbDecrypt](#AesOfbDecrypt)
+-   [Base64StdEncode](#Base64StdEncode)
+-   [Base64StdDecode](#Base64StdDecode)
+-   [DesEcbEncrypt](#DesEcbEncrypt)
+-   [DesEcbDecrypt](#DesEcbDecrypt)
+-   [DesCbcEncrypt](#DesCbcEncrypt)
+-   [DesCbcDecrypt](#DesCbcDecrypt)
+-   [DesCtrCrypt](#DesCtrCrypt)
+-   [DesCfbEncrypt](#DesCfbEncrypt)
+-   [DesCfbDecrypt](#DesCfbDecrypt)
+-   [DesOfbEncrypt](#DesOfbEncrypt)
+-   [DesOfbDecrypt](#DesOfbDecrypt)
+-   [HmacMd5](#HmacMd5)
+-   [HmacSha1](#HmacSha1)
+-   [HmacSha256](#HmacSha256)
+-   [HmacSha512](#HmacSha512)
+-   [Md5String](#Md5String)
+-   [Md5File](#Md5File)
+-   [Sha1](#Sha1)
+-   [Sha256](#Sha256)
+-   [Sha512](#Sha512)
+-   [GenerateRsaKey](#GenerateRsaKey)
+-   [RsaEncrypt](#RsaEncrypt)
+-   [RsaDecrypt](#RsaDecrypt)

 <div STYLE="page-break-after: always;"></div>

 ## 文档

-
-
 ### <span id="AesEcbEncrypt">AesEcbEncrypt</span>

 <p>使用AES ECB算法模式加密数据. 参数`key`的长度是16, 24 or 32。</p>
@@ -73,6 +71,7 @@ import (
 ```go
 func AesEcbEncrypt(data, key []byte) []byte
 ```
+
 <b>列子:</b>

 ```go
@@ -80,20 +79,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefghijklmnop"
+    key := "abcdefghijklmnop"
    encrypted := cryptor.AesEcbEncrypt([]byte(data), []byte(key))

    fmt.Println(string(encrypted))
 }
 ```

-
-
 ### <span id="AesEcbDecrypt">AesEcbDecrypt</span>

 <p>使用AES ECB算法模式解密数据. 参数`key`的长度是16, 24 or 32。
@@ -103,6 +100,7 @@ func main() {
 ```go
 func AesEcbDecrypt(encrypted, key []byte) []byte
 ```
+
 <b>列子:</b>

 ```go
@@ -110,20 +108,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefghijklmnop"
+    key := "abcdefghijklmnop"
    encrypted := cryptor.AesEcbEncrypt([]byte(data), []byte(key))
-		decrypted := cryptor.AesEcbDecrypt(encrypted, []byte(key))
+    decrypted := cryptor.AesEcbDecrypt(encrypted, []byte(key))
    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="AesCbcEncrypt">AesCbcEncrypt</span>

 <p>使用AES CBC算法模式加密数据. 参数`key`的长度是16, 24 or 32。</p>
@@ -133,6 +129,7 @@ func main() {
 ```go
 func AesCbcEncrypt(data, key []byte) []byte
 ```
+
 <b>列子:</b>

 ```go
@@ -140,20 +137,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefghijklmnop"
+    key := "abcdefghijklmnop"
    encrypted := cryptor.AesCbcEncrypt([]byte(data), []byte(key))

    fmt.Println(string(encrypted))
 }
 ```

-
-
 ### <span id="AesCbcDecrypt">AesCbcDecrypt</span>

 <p>使用AES CBC算法模式解密数据. 参数`key`的长度是16, 24 or 32。</p>
@@ -171,21 +166,19 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefghijklmnop"
+    key := "abcdefghijklmnop"
    encrypted := cryptor.AesCbcEncrypt([]byte(data), []byte(key))
-		decrypted := cryptor.AesCbcDecrypt(encrypted, []byte(key))
-    
+    decrypted := cryptor.AesCbcDecrypt(encrypted, []byte(key))
+
    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="AesCtrCrypt">AesCtrCrypt</span>

 <p>使用AES CTR算法模式加密/解密数据. 参数`key`的长度是16, 24 or 32。</p>
@@ -203,12 +196,12 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefghijklmnop"
+    key := "abcdefghijklmnop"
    encrypted := cryptor.AesCtrCrypt([]byte(data), []byte(key))
    decrypted := cryptor.AesCtrCrypt(encrypted, []byte(key))

@@ -216,8 +209,6 @@ func main() {
 }
 ```

-
-
 ### <span id="AesCfbEncrypt">AesCfbEncrypt</span>

 <p>使用AES CFB算法模式加密数据. 参数`key`的长度是16, 24 or 32。</p>
@@ -235,19 +226,17 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefghijklmnop"
+    key := "abcdefghijklmnop"
    encrypted := cryptor.AesCfbEncrypt([]byte(data), []byte(key))
    fmt.Println(string(encrypted))
 }
 ```

-
-
 ### <span id="AesCfbDecrypt">AesCfbDecrypt</span>

 <p>使用AES CFB算法模式解密数据. 参数`key`的长度是16, 24 or 32。</p>
@@ -265,20 +254,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefghijklmnop"
+    key := "abcdefghijklmnop"
    encrypted := cryptor.AesCfbEncrypt([]byte(data), []byte(key))
-		decrypted := cryptor.AesCfbDecrypt(encrypted, []byte(key))
+    decrypted := cryptor.AesCfbDecrypt(encrypted, []byte(key))
    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="AesOfbEncrypt">AesOfbEncrypt</span>

 <p>使用AES OFB算法模式加密数据. 参数`key`的长度是16, 24 or 32</p>
@@ -296,19 +283,17 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefghijklmnop"
+    key := "abcdefghijklmnop"
    encrypted := cryptor.AesOfbEncrypt([]byte(data), []byte(key))
    fmt.Println(string(encrypted))
 }
 ```

-
-
 ### <span id="AesCfbDecrypt">AesOfbDecrypt</span>

 <p>使用AES OFB算法模式解密数据. 参数`key`的长度是16, 24 or 32</p>
@@ -326,20 +311,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefghijklmnop"
+    key := "abcdefghijklmnop"
    encrypted := cryptor.AesOfbEncrypt([]byte(data), []byte(key))
-		decrypted := cryptor.AesOfbDecrypt(encrypted, []byte(key))
+    decrypted := cryptor.AesOfbDecrypt(encrypted, []byte(key))
    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="Base64StdEncode">Base64StdEncode</span>

 <p>将字符串base64编码</p>
@@ -349,6 +332,7 @@ func main() {
 ```go
 func Base64StdEncode(s string) string
 ```
+
 <b>列子:</b>

 ```go
@@ -356,17 +340,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	base64Str := cryptor.Base64StdEncode("hello world")
+    base64Str := cryptor.Base64StdEncode("hello world")
    fmt.Println(base64Str) //aGVsbG8gd29ybGQ=
 }
 ```

-
-
 ### <span id="Base64StdDecode">Base64StdDecode</span>

 <p>解码base64字符串</p>
@@ -384,17 +366,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	str := cryptor.Base64StdDecode("aGVsbG8gd29ybGQ=")
+      str := cryptor.Base64StdDecode("aGVsbG8gd29ybGQ=")
    fmt.Println(str) //hello world
 }
 ```

-
-
 ### <span id="DesEcbEncrypt">DesEcbEncrypt</span>

 <p>使用DES ECB算法模式加密数据. 参数`key`的长度是8</p>
@@ -412,20 +392,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesEcbEncrypt([]byte(data), []byte(key))

    fmt.Println(string(encrypted))
 }
 ```

-
-
 ### <span id="DesEcbDecrypt">DesEcbDecrypt</span>

 <p>使用DES ECB算法模式解密数据. 参数`key`的长度是8</p>
@@ -443,21 +421,19 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesEcbEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.DesEcbDecrypt(encrypted, []byte(key))
-  
+
    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="DesCbcEncrypt">DesCbcEncrypt</span>

 <p>使用DES CBC算法模式加密数据. 参数`key`的长度是8</p>
@@ -475,20 +451,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesCbcEncrypt([]byte(data), []byte(key))

    fmt.Println(string(encrypted))
 }
 ```

-
-
 ### <span id="DesCbcDecrypt">DesCbcDecrypt</span>

 <p>使用DES CBC算法模式解密数据. 参数`key`的长度是8</p>
@@ -506,21 +480,19 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesCbcEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.DesCbcDecrypt(encrypted, []byte(key))
-    
+
    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="DesCtrCrypt">DesCtrCrypt</span>

 <p>使用DES CTR算法模式加密/解密数据. 参数`key`的长度是8</p>
@@ -538,12 +510,12 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesCtrCrypt([]byte(data), []byte(key))
    decrypted := cryptor.DesCtrCrypt(encrypted, []byte(key))

@@ -551,8 +523,6 @@ func main() {
 }
 ```

-
-
 ### <span id="DesCfbEncrypt">DesCfbEncrypt</span>

 <p>使用DES CFB算法模式加密数据. 参数`key`的长度是8</p>
@@ -570,19 +540,17 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesCfbEncrypt([]byte(data), []byte(key))
    fmt.Println(string(encrypted))
 }
 ```

-
-
 ### <span id="DesCfbDecrypt">DesCfbDecrypt</span>

 <p>使用DES CFB算法模式解密数据. 参数`key`的长度是8</p>
@@ -600,20 +568,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesCfbEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.DesCfbDecrypt(encrypted, []byte(key))
    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="DesOfbEncrypt">DesOfbEncrypt</span>

 <p>使用DES OFB算法模式加密数据. 参数`key`的长度是8</p>
@@ -631,19 +597,17 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesOfbEncrypt([]byte(data), []byte(key))
    fmt.Println(string(encrypted))
 }
 ```

-
-
 ### <span id="DesOfbDecrypt">DesOfbDecrypt</span>

 <p>使用DES OFB算法模式解密数据. 参数`key`的长度是8</p>
@@ -661,20 +625,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
    data := "hello world"
-  	key := "abcdefgh"
+    key := "abcdefgh"
    encrypted := cryptor.DesOfbEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.DesOfbDecrypt(encrypted, []byte(key))
    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="HmacMd5">HmacMd5</span>

 <p>获取字符串md5 hmac值</p>
@@ -692,17 +654,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.HmacMd5("hello world", "12345"))
-  	fmt.Println(s) //5f4c9faaff0a1ad3007d9ddc06abe36d
+    s := cryptor.HmacMd5("hello world", "12345"))
+    fmt.Println(s) //5f4c9faaff0a1ad3007d9ddc06abe36d
 }
 ```

-
-
 ### <span id="HmacSha1">HmacSha1</span>

 <p>获取字符串sha1 hmac值</p>
@@ -720,17 +680,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.HmacSha1("hello world", "12345"))
-  	fmt.Println(s) //3826f812255d8683f051ee97346d1359234d5dbd
+    s := cryptor.HmacSha1("hello world", "12345"))
+    fmt.Println(s) //3826f812255d8683f051ee97346d1359234d5dbd
 }
 ```

-
-
 ### <span id="HmacSha256">HmacSha256</span>

 <p>获取字符串sha256 hmac值</p>
@@ -748,17 +706,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.HmacSha256("hello world", "12345"))
-  	fmt.Println(s) //9dce2609f2d67d41f74c7f9efc8ccd44370d41ad2de52982627588dfe7289ab8
+    s := cryptor.HmacSha256("hello world", "12345"))
+    fmt.Println(s) //9dce2609f2d67d41f74c7f9efc8ccd44370d41ad2de52982627588dfe7289ab8
 }
 ```

-
-
 ### <span id="HmacSha512">HmacSha512</span>

 <p>获取字符串sha512 hmac值</p>
@@ -776,18 +732,16 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.HmacSha512("hello world", "12345"))
-  	fmt.Println(s) 
+    s := cryptor.HmacSha512("hello world", "12345"))
+    fmt.Println(s)
 //5b1563ac4e9b49c9ada8ccb232588fc4f0c30fd12f756b3a0b95af4985c236ca60925253bae10ce2c6bf9af1c1679b51e5395ff3d2826c0a2c7c0d72225d4175
 }
 ```

-
-
 ### <span id="Md5String">Md5String</span>

 <p>获取字符串md5值</p>
@@ -805,17 +759,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.Md5String("hello"))
-  	fmt.Println(s) //5d41402abc4b2a76b9719d911017c592
+    s := cryptor.Md5String("hello"))
+    fmt.Println(s) //5d41402abc4b2a76b9719d911017c592
 }
 ```

-
-
 ### <span id="Md5File">Md5File</span>

 <p>获取文件md5值.</p>
@@ -833,17 +785,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.Md5File("./main.go"))
-  	fmt.Println(s)
+    s := cryptor.Md5File("./main.go"))
+    fmt.Println(s)
 }
 ```

-
-
 ### <span id="Sha1">Sha1</span>

 <p>获取字符串sha1值</p>
@@ -861,17 +811,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.Sha1("hello world"))
-  	fmt.Println(s) //2aae6c35c94fcfb415dbe95f408b9ce91ee846ed
+    s := cryptor.Sha1("hello world"))
+    fmt.Println(s) //2aae6c35c94fcfb415dbe95f408b9ce91ee846ed
 }
 ```

-
-
 ### <span id="Sha256">Sha256</span>

 <p>获取字符串sha256值</p>
@@ -889,17 +837,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.Sha256("hello world"))
-  	fmt.Println(s) //b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9
+    s := cryptor.Sha256("hello world"))
+    fmt.Println(s) //b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9
 }
 ```

-
-
 ### <span id="Sha512">Sha512</span>

 <p>获取字符串sha512值</p>
@@ -917,17 +863,15 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	s := cryptor.Sha512("hello world"))
-  	fmt.Println(s) //309ecc489c12d6eb4cc40f50c902f2b4d0ed77ee511a7c7a9bcd3ca86d4cd86f989dd35bc5ff499670da34255b45b0cfd830e81f605dcf7dc5542e93ae9cd76f
+    s := cryptor.Sha512("hello world"))
+    fmt.Println(s) //309ecc489c12d6eb4cc40f50c902f2b4d0ed77ee511a7c7a9bcd3ca86d4cd86f989dd35bc5ff499670da34255b45b0cfd830e81f605dcf7dc5542e93ae9cd76f
 }
 ```

-
-
 ### <span id="GenerateRsaKey">GenerateRsaKey</span>

 <p>在当前目录下创建rsa私钥文件和公钥文件</p>
@@ -945,19 +889,17 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	err := cryptor.GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
-  	if err != nil {
-      fmt.Println(err)
-  	}
+    err := cryptor.GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
+    if err != nil {
+        fmt.Println(err)
+    }
 }
 ```

-
-
 ### <span id="RsaEncrypt">RsaEncrypt</span>

 <p>用公钥文件ras加密数据</p>
@@ -975,23 +917,22 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	err := cryptor.GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
-  	if err != nil {
-      fmt.Println(err)
-  	}
-  	data := []byte("hello world")
+    err := cryptor.GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
+    if err != nil {
+        fmt.Println(err)
+    }
+
+    data := []byte("hello world")
    encrypted := cryptor.RsaEncrypt(data, "rsa_public.pem")
    decrypted := cryptor.RsaDecrypt(encrypted, "rsa_private.pem")
-  	fmt.Println(string(decrypted)) //hello world
+    fmt.Println(string(decrypted)) //hello world
 }
 ```

-
-
 ### <span id="RsaDecrypt">RsaDecrypt</span>

 <p>用私钥文件rsa解密数据</p>
@@ -1009,20 +950,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/cryptor"
+    "github.com/duke-git/lancet/cryptor"
 )

 func main() {
-  	err := cryptor.GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
-  	if err != nil {
-      fmt.Println(err)
-  	}
-  	data := []byte("hello world")
+    err := cryptor.GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
+    if err != nil {
+        fmt.Println(err)
+    }
+    
+    data := []byte("hello world")
    encrypted := cryptor.RsaEncrypt(data, "rsa_public.pem")
    decrypted := cryptor.RsaDecrypt(encrypted, "rsa_private.pem")
-  	fmt.Println(string(decrypted)) //hello world
+    fmt.Println(string(decrypted)) //hello world
 }
 ```
-
-
-
--- a/docs/datetime.md
+++ b/docs/datetime.md
--- a/docs/datetime_zh-CN.md
+++ b/docs/datetime_zh-CN.md
--- a/docs/fileutil.md
+++ b/docs/fileutil.md
@@ -1,47 +1,57 @@
 # Fileutil
+
 Package fileutil implements some basic functions for file operations.

 <div STYLE="page-break-after: always;"></div>

 ## Source:

- [https://github.com/duke-git/lancet/blob/main/fileutil/file.go](https://github.com/duke-git/lancet/blob/main/fileutil/file.go)
+[https://github.com/duke-git/lancet/blob/v1/fileutil/file.go](https://github.com/duke-git/lancet/blob/v1/fileutil/file.go)

 <div STYLE="page-break-after: always;"></div>

 ## Usage:
+
 ```go
 import (
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )
 ```

 <div STYLE="page-break-after: always;"></div>

 ## Index
- [ClearFile](#ClearFile)
- [CreateFile](#CreateFile)
- [CopyFile](#CopyFile)
- [FileMode](#FileMode)
- [MiMeType](#MiMeType)
- [IsExist](#IsExist)
- [IsLink](#IsLink)
- [IsDir](#IsDir)
- [ListFileNames](#ListFileNames)
- [RemoveFile](#RemoveFile)
- [ReadFileToString](#ReadFileToString)
- [ReadFileByLine](#ReadFileByLine)
- [Zip](#Zip)

- [UnZip](#UnZip)
+-   [ClearFile](#ClearFile)
+-   [CreateFile](#CreateFile)
+-   [CreateDir](#CreateDir)
+-   [CopyFile](#CopyFile)
+-   [FileMode](#FileMode)
+-   [MiMeType](#MiMeType)
+-   [IsExist](#IsExist)
+-   [IsLink](#IsLink)
+-   [IsDir](#IsDir)
+-   [ListFileNames](#ListFileNames)
+-   [RemoveFile](#RemoveFile)
+-   [ReadFileToString](#ReadFileToString)
+-   [ReadFileByLine](#ReadFileByLine)
+-   [Zip](#Zip)
+-   [UnZip](#UnZip)
+-   [CurrentPath](#CurrentPath)
+-   [IsZipFile](#IsZipFile)
+-   [FileSize](#FileSize)
+-   [MTime](#MTime)
+-   [Sha](#Sha)
+-   [ReadCsvFile](#ReadCsvFile)
+-   [WriteStringToFile](#WriteStringToFile)
+-   [WriteBytesToFile](#WriteBytesToFile)

 <div STYLE="page-break-after: always;"></div>

 ## Documentation

-
-
 ### <span id="ClearFile">ClearFile</span>
+
 <p>Clear the file content, write empty string to the file.</p>

 <b>Signature:</b>
@@ -49,6 +59,7 @@ import (
 ```go
 func ClearFile(path string) error
 ```
+
 <b>Example:</b>

 ```go
@@ -56,7 +67,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
@@ -67,14 +78,16 @@ func main() {
 }
 ```

-### <span id="CreateFile">CreateFile</span>
-<p>Create file in path. return true if create succeed.</p>
+### <span id="CreateDir">CreateDir</span>
+
+<p>Create directory in absolute path. param `absPath` like /a/, /a/b/.</p>

 <b>Signature:</b>

 ```go
-func CreateFile(path string) bool
+func CreateDir(absPath string) error
 ```
+
 <b>Example:</b>

 ```go
@@ -82,7 +95,33 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    err := fileutil.CreateDir("/a/")
+    fmt.Println(err)
+}
+```
+
+### <span id="CreateFile">CreateFile</span>
+
+<p>Create file in path. return true if create succeed.</p>
+
+<b>Signature:</b>
+
+```go
+func CreateFile(path string) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
@@ -91,8 +130,8 @@ func main() {
 }
 ```

-
 ### <span id="CopyFile">CopyFile</span>
+
 <p>Copy src file to dest file. If dest file exist will overwrite it.</p>

 <b>Signature:</b>
@@ -100,6 +139,7 @@ func main() {
 ```go
 func CopyFile(srcFilePath string, dstFilePath string) error
 ```
+
 <b>Example:</b>

 ```go
@@ -107,20 +147,19 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
    err := fileutil.CopyFile("./test.txt", "./test_copy.txt")
-	if err != nil {
-		fmt.Println(err)
-	}
+    if err != nil {
+        fmt.Println(err)
+    }
 }
 ```

-
-
 ### <span id="FileMode">FileMode</span>
+
 <p>Return file mode infomation.</p>

 <b>Signature:</b>
@@ -128,6 +167,7 @@ func main() {
 ```go
 func FileMode(path string) (fs.FileMode, error)
 ```
+
 <b>Example:</b>

 ```go
@@ -135,28 +175,28 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
    mode, err := fileutil.FileMode("./test.txt")
-	if err != nil {
-		fmt.Println(err)
-	}
+    if err != nil {
+        fmt.Println(err)
+    }
    fmt.Println(mode)
 }
 ```

-
-
 ### <span id="MiMeType">MiMeType</span>
+
 <p>Get file mime type, 'file' param's type should be string or *os.File.</p>

 <b>Signature:</b>

 ```go
-func MiMeType(file any) string
+func MiMeType(file interface{}) string
 ```
+
 <b>Example:</b>

 ```go
@@ -165,7 +205,7 @@ package main
 import (
    "fmt"
    "os"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
@@ -178,10 +218,8 @@ func main() {
 }
 ```

-
-
-
 ### <span id="IsExist">IsExist</span>
+
 <p>Checks if a file or directory exists.</p>

 <b>Signature:</b>
@@ -189,6 +227,7 @@ func main() {
 ```go
 func IsExist(path string) bool
 ```
+
 <b>Example:</b>

 ```go
@@ -196,7 +235,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
@@ -206,9 +245,8 @@ func main() {
 }
 ```

-
-
 ### <span id="IsLink">IsLink</span>
+
 <p>Checks if a file is symbol link or not.</p>

 <b>Signature:</b>
@@ -216,6 +254,7 @@ func main() {
 ```go
 func IsLink(path string) bool
 ```
+
 <b>Example:</b>

 ```go
@@ -223,7 +262,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
@@ -232,16 +271,16 @@ func main() {
 }
 ```

-
-
 ### <span id="IsDir">IsDir</span>
+
 <p>Checks if the path is directy or not.</p>

 <b>Signature:</b>

 ```go
-func IsDir(path string) bool 
+func IsDir(path string) bool
 ```
+
 <b>Example:</b>

 ```go
@@ -249,7 +288,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
@@ -261,9 +300,8 @@ func main() {
 }
 ```

-
-
 ### <span id="ListFileNames">ListFileNames</span>
+
 <p>List all file names in given path.</p>

 <b>Signature:</b>
@@ -271,6 +309,7 @@ func main() {
 ```go
 func ListFileNames(path string) ([]string, error)
 ```
+
 <b>Example:</b>

 ```go
@@ -278,7 +317,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
@@ -287,9 +326,8 @@ func main() {
 }
 ```

-
-
 ### <span id="RemoveFile">RemoveFile</span>
+
 <p>Remove the file of path.</p>

 <b>Signature:</b>
@@ -297,6 +335,7 @@ func main() {
 ```go
 func RemoveFile(path string) error
 ```
+
 <b>Example:</b>

 ```go
@@ -304,19 +343,19 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
    err := fileutil.RemoveFile("./test.txt")
    if err != nil {
-		fmt.Println(err)
-	}
+        fmt.Println(err)
+    }
 }
 ```

-
 ### <span id="ReadFileToString">ReadFileToString</span>
+
 <p>Return string of file content.</p>

 <b>Signature:</b>
@@ -324,6 +363,7 @@ func main() {
 ```go
 func ReadFileToString(path string) (string, error)
 ```
+
 <b>Example:</b>

 ```go
@@ -332,24 +372,23 @@ package main
 import (
    "fmt"
    "os"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
    path := "./test.txt"
-	fileutil.CreateFile(path)
+    fileutil.CreateFile(path)

-	f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
-	f.WriteString("hello world")
+    f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
+    f.WriteString("hello world")

-	content, _ := fileutil.ReadFileToString(path)
+    content, _ := fileutil.ReadFileToString(path)
    fmt.Println(content) //hello world
 }
 ```

-
-
 ### <span id="ReadFileByLine">ReadFileByLine</span>
+
 <p>Read file line by line, and return slice of lines</p>

 <b>Signature:</b>
@@ -357,6 +396,7 @@ func main() {
 ```go
 func ReadFileByLine(path string)([]string, error)
 ```
+
 <b>Example:</b>

 ```go
@@ -365,25 +405,24 @@ package main
 import (
    "fmt"
    "os"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
    path := "./text.txt"
-	fileutil.CreateFile(path)
+    fileutil.CreateFile(path)

-	f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
-	defer f.Close()
-	f.WriteString("hello\nworld")
+    f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
+    defer f.Close()
+    f.WriteString("hello\nworld")

-	contents, _ := fileutil.ReadFileByLine(path)
+    contents, _ := fileutil.ReadFileByLine(path)
    fmt.Println(contents) //[]string{"hello", "world"}
 }
 ```

-
-
 ### <span id="Zip">Zip</span>
+
 <p>Create a zip file of fpath, fpath could be a file or a directory.</p>

 <b>Signature:</b>
@@ -391,6 +430,7 @@ func main() {
 ```go
 func Zip(fpath string, destPath string) error
 ```
+
 <b>Example:</b>

 ```go
@@ -398,21 +438,19 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
-	err := fileutil.Zip("./test.txt", "./test.zip")
+    err := fileutil.Zip("./test.txt", "./test.zip")
    if err != nil {
        fmt.Println(err)
    }
 }
 ```

-
-
-
 ### <span id="UnZip">UnZip</span>
+
 <p>Unzip the file and save it to dest path.</p>

 <b>Signature:</b>
@@ -420,6 +458,7 @@ func main() {
 ```go
 func UnZip(zipFile string, destPath string) error
 ```
+
 <b>Example:</b>

 ```go
@@ -427,18 +466,300 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
-	err := fileutil.Zip("./test.zip", "./unzip/test.txt")
+    err := fileutil.Zip("./test.zip", "./unzip/test.txt")
    if err != nil {
        fmt.Println(err)
    }
 }
 ```

+### <span id="CurrentPath">CurrentPath</span>
+
+<p>return current absolute path.</p>
+
+<b>Signature:</b>
+
+```go
+func CurrentPath() string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    absPath := CurrentPath()
+    fmt.Println(absPath)
+}
+```


+### <span id="IsZipFile">IsZipFile</span>
+
+<p>Checks if file is zip file or not.</p>
+
+<b>Signature:</b>
+
+```go
+func IsZipFile(filepath string) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    isZip := IsZipFile("./zipfile.zip")
+    fmt.Println(isZip)
+}
+```
+
+### <span id="FileSize">FileSize</span>
+
+<p>Returns file size in bytes.</p>
+
+<b>Signature:</b>
+
+```go
+func FileSize(path string) (int64, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    size, err := fileutil.FileSize("./testdata/test.txt")
+
+    fmt.Println(size)
+    fmt.Println(err)
+
+    // Output:
+    // 20
+    // <nil>
+}
+```
+
+### <span id="MTime">MTime</span>
+
+<p>Returns file modified time(unix timestamp).</p>
+
+<b>Signature:</b>
+
+```go
+func MTime(filepath string) (int64, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    mtime, err := fileutil.MTime("./testdata/test.txt")
+
+    fmt.Println(mtime)
+    fmt.Println(err)
+
+    // Output:
+    // 1682391110
+    // <nil>
+}
+```
+
+### <span id="Sha">Sha</span>
+
+<p>returns file sha value, param `shaType` should be 1, 256 or 512.</p>
+
+<b>Signature:</b>
+
+```go
+func Sha(filepath string, shaType ...int) (string, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    sha1, err := fileutil.Sha("./testdata/test.txt", 1)
+    sha256, _ := fileutil.Sha("./testdata/test.txt", 256)
+    sha512, _ := fileutil.Sha("./testdata/test.txt", 512)
+
+    fmt.Println(sha1)
+    fmt.Println(sha256)
+    fmt.Println(sha512)
+    fmt.Println(err)
+
+    // Output:
+    // dda3cf10c5a6ff6c6659a497bf7261b287af2bc7
+    // aa6d0a3fbc3442c228d606da09e0c1dc98c69a1cac3da1909199e0266171df35
+    // d22aba2a1b7a2e2f512756255cc1c3708905646920cb1eb95e45b531ba74774dbbb89baebf1f716220eb9cf4908f1cfc5b2a01267704d9a59f59d77cab609870
+    // <nil>
+}
+```
+
+### <span id="ReadCsvFile">ReadCsvFile</span>
+
+<p>Reads file content into slice.</p>
+
+<b>Signature:</b>
+
+```go
+func ReadCsvFile(filepath string) ([][]string, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    content, err := fileutil.ReadCsvFile("./testdata/test.csv")
+
+    fmt.Println(content)
+    fmt.Println(err)
+
+    // Output:
+    // [[Bob  12  male] [Duke  14  male] [Lucy  16  female]]
+    // <nil>
+}
+```


+### <span id="WriteBytesToFile">WriteBytesToFile</span>
+
+<p>Writes bytes to target file.</p>
+
+<b>Signature:</b>
+
+```go
+func WriteBytesToFile(filepath string, content []byte) error
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    filepath := "./bytes.txt"
+
+	file, err := os.Create(filepath)
+	if err != nil {
+		return
+	}
+
+	defer file.Close()
+
+	err = fileutil.WriteBytesToFile(filepath, []byte("hello"))
+	if err != nil {
+		return
+	}
+
+	content, err := fileutil.ReadFileToString(filepath)
+	if err != nil {
+		return
+	}
+
+	os.Remove(filepath)
+
+	fmt.Println(content)
+
+	// Output:
+	// hello
+}
+```
+
+
+### <span id="WriteStringToFile">WriteStringToFile</span>
+
+<p>Writes string to target file.</p>
+
+<b>Signature:</b>
+
+```go
+func WriteStringToFile(filepath string, content string, append bool) error
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    filepath := "./test.txt"
+
+	file, err := os.Create(filepath)
+	if err != nil {
+		return
+	}
+
+	defer file.Close()
+
+	err = fileutil.WriteStringToFile(filepath, "hello", true)
+	if err != nil {
+		return
+	}
+
+	content, err := fileutil.ReadFileToString(filepath)
+	if err != nil {
+		return
+	}
+
+	os.Remove(filepath)
+
+	fmt.Println(content)
+
+	// Output:
+	// hello
+}
+```
--- a/docs/fileutil_zh-CN.md
+++ b/docs/fileutil_zh-CN.md
@@ -1,47 +1,57 @@
 # Fileutil
-fileutil包支持文件基本操作。
+
+fileutil 包支持文件基本操作。

 <div STYLE="page-break-after: always;"></div>

 ## 源码:

- [https://github.com/duke-git/lancet/blob/main/fileutil/file.go](https://github.com/duke-git/lancet/blob/main/fileutil/file.go)
+[https://github.com/duke-git/lancet/blob/v1/fileutil/file.go](https://github.com/duke-git/lancet/blob/v1/fileutil/file.go)

 <div STYLE="page-break-after: always;"></div>

 ## 用法:
+
 ```go
 import (
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )
 ```

 <div STYLE="page-break-after: always;"></div>

 ## 目录
- [ClearFile](#ClearFile)
- [CreateFile](#CreateFile)
- [CopyFile](#CopyFile)
- [FileMode](#FileMode)
- [MiMeType](#MiMeType)
- [IsExist](#IsExist)
- [IsLink](#IsLink)
- [IsDir](#IsDir)

- [ListFileNames](#ListFileNames)
- [RemoveFile](#RemoveFile)
- [ReadFileToString](#ReadFileToString)
- [ReadFileByLine](#ReadFileByLine)
- [Zip](#Zip)
- [UnZip](#UnZip)
+-   [ClearFile](#ClearFile)
+-   [CreateFile](#CreateFile)
+-   [CreateDir](#CreateDir)
+-   [CopyFile](#CopyFile)
+-   [FileMode](#FileMode)
+-   [MiMeType](#MiMeType)
+-   [IsExist](#IsExist)
+-   [IsLink](#IsLink)
+-   [IsDir](#IsDir)
+-   [ListFileNames](#ListFileNames)
+-   [RemoveFile](#RemoveFile)
+-   [ReadFileToString](#ReadFileToString)
+-   [ReadFileByLine](#ReadFileByLine)
+-   [Zip](#Zip)
+-   [UnZip](#UnZip)
+-   [CurrentPath](#CurrentPath)
+-   [IsZipFile](#IsZipFile)
+-   [FileSize](#FileSize)
+-   [MTime](#MTime)
+-   [Sha](#Sha)
+-   [ReadCsvFile](#ReadCsvFile)
+-   [WriteStringToFile](#WriteStringToFile)
+-   [WriteBytesToFile](#WriteBytesToFile)

 <div STYLE="page-break-after: always;"></div>

 ## 文档

-
-
 ### <span id="ClearFile">ClearFile</span>
+
 <p>清空文件内容</p>

 <b>函数签名:</b>
@@ -49,6 +59,7 @@ import (
 ```go
 func ClearFile(path string) error
 ```
+
 <b>例子:</b>

 ```go
@@ -56,7 +67,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
@@ -67,14 +78,16 @@ func main() {
 }
 ```

-### <span id="CreateFile">CreateFile</span>
-<p>创建文件，创建成功返回true, 否则返回false</p>
+### <span id="CreateDir">CreateDir</span>
+
+<p>使用绝对路径创建嵌套目录，例如/a/, /a/b/</p>

 <b>函数签名:</b>

 ```go
-func CreateFile(path string) bool
+func CreateDir(absPath string) error
 ```
+
 <b>例子:</b>

 ```go
@@ -82,7 +95,33 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    err := fileutil.CreateDir("/a/")
+    fmt.Println(err)
+}
+```
+
+### <span id="CreateFile">CreateFile</span>
+
+<p>创建文件，创建成功返回true, 否则返回false</p>
+
+<b>函数签名:</b>
+
+```go
+func CreateFile(path string) bool
+```
+
+<b>例子:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
@@ -91,8 +130,8 @@ func main() {
 }
 ```

-
 ### <span id="CopyFile">CopyFile</span>
+
 <p>拷贝文件，会覆盖原有的拷贝文件</p>

 <b>函数签名:</b>
@@ -100,6 +139,7 @@ func main() {
 ```go
 func CopyFile(srcFilePath string, dstFilePath string) error
 ```
+
 <b>例子:</b>

 ```go
@@ -107,20 +147,19 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
    err := fileutil.CopyFile("./test.txt", "./test_copy.txt")
-	if err != nil {
-		fmt.Println(err)
-	}
+    if err != nil {
+        fmt.Println(err)
+    }
 }
 ```

-
-
 ### <span id="FileMode">FileMode</span>
+
 <p>获取文件mode信息</p>

 <b>函数签名:</b>
@@ -128,6 +167,7 @@ func main() {
 ```go
 func FileMode(path string) (fs.FileMode, error)
 ```
+
 <b>例子:</b>

 ```go
@@ -135,28 +175,28 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
    mode, err := fileutil.FileMode("./test.txt")
-	if err != nil {
-		fmt.Println(err)
-	}
+    if err != nil {
+        fmt.Println(err)
+    }
    fmt.Println(mode)
 }
 ```

-
-
 ### <span id="MiMeType">MiMeType</span>
+
 <p>获取文件mime类型, 'file'参数的类型必须是string或者*os.File</p>

 <b>函数签名:</b>

 ```go
-func MiMeType(file any) string
+func MiMeType(file interface{}) string
 ```
+
 <b>例子:</b>

 ```go
@@ -165,7 +205,7 @@ package main
 import (
    "fmt"
    "os"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
@@ -178,10 +218,8 @@ func main() {
 }
 ```

-
-
-
 ### <span id="IsExist">IsExist</span>
+
 <p>判断文件或目录是否存在</p>

 <b>函数签名:</b>
@@ -189,6 +227,7 @@ func main() {
 ```go
 func IsExist(path string) bool
 ```
+
 <b>例子:</b>

 ```go
@@ -196,7 +235,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
@@ -206,9 +245,8 @@ func main() {
 }
 ```

-
-
 ### <span id="IsLink">IsLink</span>
+
 <p>判断文件是否是符号链接</p>

 <b>函数签名:</b>
@@ -216,6 +254,7 @@ func main() {
 ```go
 func IsLink(path string) bool
 ```
+
 <b>例子:</b>

 ```go
@@ -223,7 +262,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
@@ -232,16 +271,16 @@ func main() {
 }
 ```

-
-
 ### <span id="IsDir">IsDir</span>
+
 <p>判断目录是否存在</p>

 <b>函数签名:</b>

 ```go
-func IsDir(path string) bool 
+func IsDir(path string) bool
 ```
+
 <b>例子:</b>

 ```go
@@ -249,7 +288,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
@@ -261,9 +300,8 @@ func main() {
 }
 ```

-
-
 ### <span id="ListFileNames">ListFileNames</span>
+
 <p>返回目录下所有文件名</p>

 <b>函数签名:</b>
@@ -271,6 +309,7 @@ func main() {
 ```go
 func ListFileNames(path string) ([]string, error)
 ```
+
 <b>例子:</b>

 ```go
@@ -278,7 +317,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
@@ -287,9 +326,8 @@ func main() {
 }
 ```

-
-
 ### <span id="RemoveFile">RemoveFile</span>
+
 <p>删除文件</p>

 <b>函数签名:</b>
@@ -297,6 +335,7 @@ func main() {
 ```go
 func RemoveFile(path string) error
 ```
+
 <b>例子:</b>

 ```go
@@ -304,19 +343,19 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
    err := fileutil.RemoveFile("./test.txt")
    if err != nil {
-		fmt.Println(err)
-	}
+        fmt.Println(err)
+    }
 }
 ```

-
 ### <span id="ReadFileToString">ReadFileToString</span>
+
 <p>读取文件内容并返回字符串</p>

 <b>函数签名:</b>
@@ -324,6 +363,7 @@ func main() {
 ```go
 func ReadFileToString(path string) (string, error)
 ```
+
 <b>例子:</b>

 ```go
@@ -332,24 +372,23 @@ package main
 import (
    "fmt"
    "os"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
    path := "./test.txt"
-	fileutil.CreateFile(path)
+    fileutil.CreateFile(path)

-	f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
-	f.WriteString("hello world")
+    f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
+    f.WriteString("hello world")

-	content, _ := fileutil.ReadFileToString(path)
+    content, _ := fileutil.ReadFileToString(path)
    fmt.Println(content) //hello world
 }
 ```

-
-
 ### <span id="ReadFileByLine">ReadFileByLine</span>
+
 <p>按行读取文件内容，返回字符串切片包含每一行</p>

 <b>函数签名:</b>
@@ -357,6 +396,7 @@ func main() {
 ```go
 func ReadFileByLine(path string)([]string, error)
 ```
+
 <b>例子:</b>

 ```go
@@ -365,25 +405,24 @@ package main
 import (
    "fmt"
    "os"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
    path := "./text.txt"
-	fileutil.CreateFile(path)
+    fileutil.CreateFile(path)

-	f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
-	defer f.Close()
-	f.WriteString("hello\nworld")
+    f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
+    defer f.Close()
+    f.WriteString("hello\nworld")

-	contents, _ := fileutil.ReadFileByLine(path)
+    contents, _ := fileutil.ReadFileByLine(path)
    fmt.Println(contents) //[]string{"hello", "world"}
 }
 ```

-
-
 ### <span id="Zip">Zip</span>
+
 <p>zip压缩文件, fpath参数可以是文件或目录</p>

 <b>函数签名:</b>
@@ -391,6 +430,7 @@ func main() {
 ```go
 func Zip(fpath string, destPath string) error
 ```
+
 <b>例子:</b>

 ```go
@@ -398,28 +438,27 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
-	err := fileutil.Zip("./test.txt", "./test.zip")
+    err := fileutil.Zip("./test.txt", "./test.zip")
    if err != nil {
        fmt.Println(err)
    }
 }
 ```

-
-
-
 ### <span id="UnZip">UnZip</span>
+
 <p>zip解压缩文件并保存在目录中</p>

-<b>Signature:</b>
+<b>函数签名:</b>

 ```go
 func UnZip(zipFile string, destPath string) error
 ```
+
 <b>例子:</b>

 ```go
@@ -427,18 +466,299 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/fileutil"
+    "github.com/duke-git/lancet/fileutil"
 )

 func main() {
-	err := fileutil.Zip("./test.zip", "./unzip/test.txt")
+    err := fileutil.Zip("./test.zip", "./unzip/test.txt")
    if err != nil {
        fmt.Println(err)
    }
 }
 ```

+### <span id="CurrentPath">CurrentPath</span>
+
+<p>返回当前位置的绝对路径。</p>
+
+<b>函数签名:</b>
+
+```go
+func CurrentPath() string
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    absPath := CurrentPath()
+    fmt.Println(absPath)
+}
+```


+### <span id="IsZipFile">IsZipFile</span>
+
+<p>判断文件是否是zip压缩文件。</p>
+
+<b>函数签名:</b>
+
+```go
+func IsZipFile(filepath string) bool
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    isZip := IsZipFile("./zipfile.zip")
+    fmt.Println(isZip)
+}
+```
+
+### <span id="FileSize">FileSize</span>
+
+<p>返回文件字节大小。</p>
+
+<b>函数签名:</b>
+
+```go
+func FileSize(path string) (int64, error)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    size, err := fileutil.FileSize("./testdata/test.txt")
+
+    fmt.Println(size)
+    fmt.Println(err)
+
+    // Output:
+    // 20
+    // <nil>
+}
+```
+
+### <span id="MTime">MTime</span>
+
+<p>返回文件修改时间(unix timestamp).</p>
+
+<b>函数签名:</b>
+
+```go
+func MTime(filepath string) (int64, error)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    mtime, err := fileutil.MTime("./testdata/test.txt")
+
+    fmt.Println(mtime)
+    fmt.Println(err)
+
+    // Output:
+    // 1682391110
+    // <nil>
+}
+```
+
+### <span id="Sha">Sha</span>
+
+<p>返回文件sha值，参数`shaType` 应传值为: 1, 256，512.</p>
+
+<b>函数签名:</b>
+
+```go
+func Sha(filepath string, shaType ...int) (string, error)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    sha1, err := fileutil.Sha("./testdata/test.txt", 1)
+    sha256, _ := fileutil.Sha("./testdata/test.txt", 256)
+    sha512, _ := fileutil.Sha("./testdata/test.txt", 512)
+
+    fmt.Println(sha1)
+    fmt.Println(sha256)
+    fmt.Println(sha512)
+    fmt.Println(err)
+
+    // Output:
+    // dda3cf10c5a6ff6c6659a497bf7261b287af2bc7
+    // aa6d0a3fbc3442c228d606da09e0c1dc98c69a1cac3da1909199e0266171df35
+    // d22aba2a1b7a2e2f512756255cc1c3708905646920cb1eb95e45b531ba74774dbbb89baebf1f716220eb9cf4908f1cfc5b2a01267704d9a59f59d77cab609870
+    // <nil>
+}
+```
+
+### <span id="ReadCsvFile">ReadCsvFile</span>
+
+<p>读取csv文件内容到切片</p>
+
+<b>函数签名:</b>
+
+```go
+func ReadCsvFile(filepath string) ([][]string, error)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    content, err := fileutil.ReadCsvFile("./testdata/test.csv")
+
+    fmt.Println(content)
+    fmt.Println(err)
+
+    // Output:
+    // [[Bob  12  male] [Duke  14  male] [Lucy  16  female]]
+    // <nil>
+}
+```
+
+### <span id="WriteBytesToFile">WriteBytesToFile</span>
+
+<p>将bytes写入文件。</p>
+
+<b>函数签名:</b>
+
+```go
+func WriteBytesToFile(filepath string, content []byte) error
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    filepath := "./bytes.txt"
+
+	file, err := os.Create(filepath)
+	if err != nil {
+		return
+	}
+
+	defer file.Close()
+
+	err = fileutil.WriteBytesToFile(filepath, []byte("hello"))
+	if err != nil {
+		return
+	}
+
+	content, err := fileutil.ReadFileToString(filepath)
+	if err != nil {
+		return
+	}
+
+	os.Remove(filepath)
+
+	fmt.Println(content)
+
+	// Output:
+	// hello
+}
+```


+### <span id="WriteStringToFile">WriteStringToFile</span>
+
+<p>将字符串写入文件。</p>
+
+<b>函数签名:</b>
+
+```go
+func WriteStringToFile(filepath string, content string, append bool) error
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    filepath := "./test.txt"
+
+	file, err := os.Create(filepath)
+	if err != nil {
+		return
+	}
+
+	defer file.Close()
+
+	err = fileutil.WriteStringToFile(filepath, "hello", true)
+	if err != nil {
+		return
+	}
+
+	content, err := fileutil.ReadFileToString(filepath)
+	if err != nil {
+		return
+	}
+
+	os.Remove(filepath)
+
+	fmt.Println(content)
+
+	// Output:
+	// hello
+}
+```
--- a/docs/formatter.md
+++ b/docs/formatter.md
@@ -1,41 +1,50 @@
 # Formatter
+
 formatter contains some functions for data formatting.

 <div STYLE="page-break-after: always;"></div>

 ## Source:

- [https://github.com/duke-git/lancet/blob/main/formatter/formatter.go](https://github.com/duke-git/lancet/blob/main/formatter/formatter.go)
+[https://github.com/duke-git/lancet/blob/v1/formatter/formatter.go](https://github.com/duke-git/lancet/blob/v1/formatter/formatter.go)

 <div STYLE="page-break-after: always;"></div>

 ## Usage:
+
 ```go
 import (
-    "github.com/duke-git/lancet/v2/formatter"
+    "github.com/duke-git/lancet/formatter"
 )
 ```

 <div STYLE="page-break-after: always;"></div>

 ## Index
- [Comma](#Comma)
+
+-   [Comma](#Comma)
+-   [Pretty](#Pretty)
+-   [PrettyToWriter](#PrettyToWriter)
+-   [DecimalBytes](#DecimalBytes)
+-   [BinaryBytes](#BinaryBytes)
+-   [ParseDecimalBytes](#ParseDecimalBytes)
+-   [ParseBinaryBytes](#ParseBinaryBytes)

 <div STYLE="page-break-after: always;"></div>

 ## Documentation

-
-
 ### <span id="Comma">Comma</span>
+
 <p>Add comma to number by every 3 numbers from right. ahead by symbol char.
 Param should be number or numberic string.</p>

 <b>Signature:</b>

 ```go
-func Comma(v any, symbol string) string
+func Comma(value interface{}, symbol string) string
 ```
+
 <b>Example:</b>

 ```go
@@ -43,7 +52,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/formatter"
+    "github.com/duke-git/lancet/formatter"
 )

 func main() {
@@ -51,3 +60,241 @@ func main() {
    fmt.Println(formatter.Comma(12345.67, "¥")) // "¥12,345.67"
 }
 ```
+
+### <span id="Pretty">Pretty</span>
+
+<p>Pretty data to JSON string.</p>
+
+<b>Signature:</b>
+
+```go
+func Pretty(v interface{}) (string, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1, _ := formatter.Pretty([]string{"a", "b", "c"})
+    result2, _ := formatter.Pretty(map[string]int{"a": 1})
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // [
+    //     "a",
+    //     "b",
+    //     "c"
+    // ]
+    // {
+    //     "a": 1
+    // }
+}
+```
+
+### <span id="PrettyToWriter">PrettyToWriter</span>
+
+<p>Pretty encode data to writer.</p>
+
+<b>Signature:</b>
+
+```go
+func PrettyToWriter(v interface{}, out io.Writer) error
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    type User struct {
+        Name string `json:"name"`
+        Aage uint   `json:"age"`
+    }
+    user := User{Name: "King", Aage: 10000}
+
+    buf := &bytes.Buffer{}
+    err := formatter.PrettyToWriter(user, buf)
+
+    fmt.Println(buf)
+    fmt.Println(err)
+
+    // Output:
+    // {
+    //     "name": "King",
+    //     "age": 10000
+    // }
+    //
+    // <nil>
+}
+```
+
+### <span id="DecimalBytes">DecimalBytes</span>
+
+<p>Returns a human readable byte size under decimal standard (base 1000). The precision parameter specifies the number of digits after the decimal point, which is 4 for default.</p>
+
+<b>Signature:</b>
+
+```go
+func DecimalBytes(size float64, precision ...int) string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1 := formatter.DecimalBytes(1000)
+    result2 := formatter.DecimalBytes(1024)
+    result3 := formatter.DecimalBytes(1234567)
+    result4 := formatter.DecimalBytes(1234567, 3)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // 1KB
+    // 1.024KB
+    // 1.2346MB
+    // 1.235MB
+}
+```
+
+### <span id="BinaryBytes">BinaryBytes</span>
+
+<p>Returns a human readable byte size under binary standard (base 1024). The precision parameter specifies the number of digits after the decimal point, which is 4 for default.</p>
+
+<b>Signature:</b>
+
+```go
+func BinaryBytes(size float64, precision ...int) string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1 := formatter.BinaryBytes(1024)
+    result2 := formatter.BinaryBytes(1024 * 1024)
+    result3 := formatter.BinaryBytes(1234567)
+    result4 := formatter.BinaryBytes(1234567, 2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // 1KiB
+    // 1MiB
+    // 1.1774MiB
+    // 1.18MiB
+}
+```
+
+### <span id="ParseDecimalBytes">ParseDecimalBytes</span>
+
+<p>Returns the human readable bytes size string into the amount it represents(base 1000).</p>
+
+<b>Signature:</b>
+
+```go
+func ParseDecimalBytes(size string) (uint64, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1, _ := formatter.ParseDecimalBytes("12")
+    result2, _ := formatter.ParseDecimalBytes("12k")
+    result3, _ := formatter.ParseDecimalBytes("12 Kb")
+    result4, _ := formatter.ParseDecimalBytes("12.2 kb")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // 12
+    // 12000
+    // 12000
+    // 12200
+}
+```
+
+### <span id="ParseBinaryBytes">ParseBinaryBytes</span>
+
+<p>Returns the human readable bytes size string into the amount it represents(base 1024).</p>
+
+<b>Signature:</b>
+
+```go
+func ParseBinaryBytes(size string) (uint64, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1, _ := formatter.ParseBinaryBytes("12")
+    result2, _ := formatter.ParseBinaryBytes("12ki")
+    result3, _ := formatter.ParseBinaryBytes("12 KiB")
+    result4, _ := formatter.ParseBinaryBytes("12.2 kib")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // 12
+    // 12288
+    // 12288
+    // 12492
+}
+```
--- a/docs/formatter_zh-CN.md
+++ b/docs/formatter_zh-CN.md
@@ -1,40 +1,49 @@
 # Formatter
-formatter格式化器包含一些数据格式化处理方法。
+
+formatter 格式化器包含一些数据格式化处理方法。

 <div STYLE="page-break-after: always;"></div>

 ## 源码:

- [https://github.com/duke-git/lancet/blob/main/formatter/formatter.go](https://github.com/duke-git/lancet/blob/main/formatter/formatter.go)
+[https://github.com/duke-git/lancet/blob/v1/formatter/formatter.go](https://github.com/duke-git/lancet/blob/v1/formatter/formatter.go)

 <div STYLE="page-break-after: always;"></div>

 ## 用法:
+
 ```go
 import (
-    "github.com/duke-git/lancet/v2/formatter"
+    "github.com/duke-git/lancet/formatter"
 )
 ```

 <div STYLE="page-break-after: always;"></div>

 ## 目录
- [Comma](#Comma)
+
+-   [Comma](#Comma)
+-   [Pretty](#Pretty)
+-   [PrettyToWriter](#PrettyToWriter)
+-   [DecimalBytes](#DecimalBytes)
+-   [BinaryBytes](#BinaryBytes)
+-   [ParseDecimalBytes](#ParseDecimalBytes)
+-   [ParseBinaryBytes](#ParseBinaryBytes)

 <div STYLE="page-break-after: always;"></div>

 ## 文档

-
-
 ### <span id="Comma">Comma</span>
+
 <p>用逗号每隔3位分割数字/字符串，签名添加符号。参数必须是数字或者可以转为数字的字符串</p>

 <b>函数签名:</b>

 ```go
-func Comma(v any, symbol string) string
+func Comma(v interface{}, symbol string) string
 ```
+
 <b>例子:</b>

 ```go
@@ -42,7 +51,7 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/formatter"
+    "github.com/duke-git/lancet/formatter"
 )

 func main() {
@@ -50,3 +59,241 @@ func main() {
    fmt.Println(formatter.Comma(12345.67, "¥")) // "¥12,345.67"
 }
 ```
+
+### <span id="Pretty">Pretty</span>
+
+<p>返回pretty JSON字符串.</p>
+
+<b>函数签名:</b>
+
+```go
+func Pretty(v interface{}) (string, error)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1, _ := formatter.Pretty([]string{"a", "b", "c"})
+    result2, _ := formatter.Pretty(map[string]int{"a": 1})
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // [
+    //     "a",
+    //     "b",
+    //     "c"
+    // ]
+    // {
+    //     "a": 1
+    // }
+}
+```
+
+### <span id="PrettyToWriter">PrettyToWriter</span>
+
+<p>Pretty encode数据到writer。</p>
+
+<b>函数签名:</b>
+
+```go
+func PrettyToWriter(v interface{}, out io.Writer) error
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    type User struct {
+        Name string `json:"name"`
+        Aage uint   `json:"age"`
+    }
+    user := User{Name: "King", Aage: 10000}
+
+    buf := &bytes.Buffer{}
+    err := formatter.PrettyToWriter(user, buf)
+
+    fmt.Println(buf)
+    fmt.Println(err)
+
+    // Output:
+    // {
+    //     "name": "King",
+    //     "age": 10000
+    // }
+    //
+    // <nil>
+}
+```
+
+### <span id="DecimalBytes">DecimalBytes</span>
+
+<p>返回十进制标准（以1000为基数）下的可读字节单位字符串。precision参数指定小数点后的位数，默认为4。</p>
+
+<b>函数签名:</b>
+
+```go
+func DecimalBytes(size float64, precision ...int) string
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1 := formatter.DecimalBytes(1000)
+    result2 := formatter.DecimalBytes(1024)
+    result3 := formatter.DecimalBytes(1234567)
+    result4 := formatter.DecimalBytes(1234567, 3)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // 1KB
+    // 1.024KB
+    // 1.2346MB
+    // 1.235MB
+}
+```
+
+### <span id="BinaryBytes">BinaryBytes</span>
+
+<p>返回binary标准（以1024为基数）下的可读字节单位字符串。precision参数指定小数点后的位数，默认为4。</p>
+
+<b>函数签名:</b>
+
+```go
+func BinaryBytes(size float64, precision ...int) string
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1 := formatter.BinaryBytes(1024)
+    result2 := formatter.BinaryBytes(1024 * 1024)
+    result3 := formatter.BinaryBytes(1234567)
+    result4 := formatter.BinaryBytes(1234567, 2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // 1KiB
+    // 1MiB
+    // 1.1774MiB
+    // 1.18MiB
+}
+```
+
+### <span id="ParseDecimalBytes">ParseDecimalBytes</span>
+
+<p>将字节单位字符串转换成其所表示的字节数（以1000为基数）。</p>
+
+<b>函数签名:</b>
+
+```go
+func ParseDecimalBytes(size string) (uint64, error)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1, _ := formatter.ParseDecimalBytes("12")
+    result2, _ := formatter.ParseDecimalBytes("12k")
+    result3, _ := formatter.ParseDecimalBytes("12 Kb")
+    result4, _ := formatter.ParseDecimalBytes("12.2 kb")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // 12
+    // 12000
+    // 12000
+    // 12200
+}
+```
+
+### <span id="ParseBinaryBytes">ParseBinaryBytes</span>
+
+<p>将字节单位字符串转换成其所表示的字节数（以1024为基数）。</p>
+
+<b>函数签名:</b>
+
+```go
+func ParseBinaryBytes(size string) (uint64, error)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1, _ := formatter.ParseBinaryBytes("12")
+    result2, _ := formatter.ParseBinaryBytes("12ki")
+    result3, _ := formatter.ParseBinaryBytes("12 KiB")
+    result4, _ := formatter.ParseBinaryBytes("12.2 kib")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // 12
+    // 12288
+    // 12288
+    // 12492
+}
+```
--- a/docs/function.md
+++ b/docs/function.md
@@ -1,47 +1,52 @@
 # Function
+
 Package function can control the flow of function execution and support part of functional programming.

 <div STYLE="page-break-after: always;"></div>

 ## Source:

- [https://github.com/duke-git/lancet/blob/main/function/function.go](https://github.com/duke-git/lancet/blob/main/function/function.go)
- [https://github.com/duke-git/lancet/blob/main/function/watcher.go](https://github.com/duke-git/lancet/blob/main/function/watcher.go)
+[https://github.com/duke-git/lancet/blob/v1/function/function.go](https://github.com/duke-git/lancet/blob/v1/function/function.go)
+[https://github.com/duke-git/lancet/blob/v1/function/watcher.go](https://github.com/duke-git/lancet/blob/v1/function/watcher.go)

 <div STYLE="page-break-after: always;"></div>

 ## Usage:
+
 ```go
 import (
-    "github.com/duke-git/lancet/v2/function"
+    "github.com/duke-git/lancet/function"
 )
 ```

 <div STYLE="page-break-after: always;"></div>

 ## Index
- [After](#After)
- [Before](#Before)
- [Curry](#Curry)
- [Compose](#Compose)
- [Debounced](#Debounced)
- [Delay](#Delay)
- [Watcher](#Watcher)
+
+-   [After](#After)
+-   [Before](#Before)
+-   [Curry](#Curry)
+-   [Compose](#Compose)
+-   [Debounced](#Debounced)
+-   [Delay](#Delay)
+-   [Pipeline](#Pipeline)
+-   [Schedule](#Schedule)
+-   [Watcher](#Watcher)

 <div STYLE="page-break-after: always;"></div>

 ## Documentation

-
-
 ### <span id="After">After</span>
+
 <p>Creates a function that invokes given func once it's called n or more times.</p>

 <b>Signature:</b>

 ```go
-func After(n int, fn any) func(args ...any) []reflect.Value
+func After(n int, fn interface{}) func(args ...interface{}) []reflect.Value
 ```
+
 <b>Example:</b>

 ```go
@@ -49,37 +54,35 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/function"
+    "github.com/duke-git/lancet/function"
 )

 func main() {
-	arr := []string{"a", "b"}
-	f := function.After(len(arr), func(i int) int {
-		fmt.Println("last print")
-		return i
-	})
+    arr := []string{"a", "b"}
+    f := function.After(len(arr), func(i int) int {
+        fmt.Println("last print")
+        return i
+    })

-	type cb func(args ...any) []reflect.Value
-	print := func(i int, s string, fn cb) {
-		fmt.Printf("arr[%d] is %s \n", i, s)
-		fn(i)
-	}
+    type cb func(args ...interface{}) []reflect.Value
+    print := func(i int, s string, fn cb) {
+        fmt.Printf("arr[%d] is %s \n", i, s)
+        fn(i)
+    }

-	fmt.Println("arr is", arr)
-	for i := 0; i < len(arr); i++ {
-		print(i, arr[i], f)
-	}
+    fmt.Println("arr is", arr)
+    for i := 0; i < len(arr); i++ {
+        print(i, arr[i], f)
+    }

    //output:
    // arr is [a b]
-    // arr[0] is a 
-    // arr[1] is b 
+    // arr[0] is a
+    // arr[1] is b
    // last print
 }
 ```

-
-
 ### <span id="Before">Before</span>

 <p>creates a function that invokes func once it's called less than n times.</p>
@@ -87,8 +90,9 @@ func main() {
 <b>Signature:</b>

 ```go
-func Before(n int, fn any) func(args ...any) []reflect.Value
+func Before(n int, fn interface{}) func(args ...interface{}) []reflect.Value
 ```
+
 <b>Example:</b>

 ```go
@@ -96,36 +100,34 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/function"
-    "github.com/duke-git/lancet/v2/internal"
+    "github.com/duke-git/lancet/function"
+    "github.com/duke-git/lancet/internal"
 )

 func main() {
    assert := internal.NewAssert(t, "TestBefore")

-	arr := []string{"a", "b", "c", "d", "e"}
-	f := function.Before(3, func(i int) int {
-		return i
-	})
+    arr := []string{"a", "b", "c", "d", "e"}
+    f := function.Before(3, func(i int) int {
+        return i
+    })

-	var res []int64
-	type cb func(args ...any) []reflect.Value
-	appendStr := func(i int, s string, fn cb) {
-		v := fn(i)
-		res = append(res, v[0].Int())
-	}
+    var res []int64
+    type cb func(args ...interface{}) []reflect.Value
+    appendStr := func(i int, s string, fn cb) {
+        v := fn(i)
+        res = append(res, v[0].Int())
+    }

-	for i := 0; i < len(arr); i++ {
-		appendStr(i, arr[i], f)
-	}
+    for i := 0; i < len(arr); i++ {
+        appendStr(i, arr[i], f)
+    }

-	expected := []int64{0, 1, 2, 2, 2}
-	assert.Equal(expected, res)
+    expected := []int64{0, 1, 2, 2, 2}
+    assert.Equal(expected, res)
 }
 ```

-
-
 ### <span id="Curry">Curry</span>

 <p>Make a curry function.</p>
@@ -133,9 +135,10 @@ func main() {
 <b>Signature:</b>

 ```go
-type Fn func(...any) any
-func (f Fn) Curry(i any) func(...any) any
+type Fn func(...interface{}) interface{}
+func (f Fn) Curry(i interface{}) func(...interface{}) interface{}
 ```
+
 <b>Example:</b>

 ```go
@@ -143,24 +146,22 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/function"
+    "github.com/duke-git/lancet/function"
 )

 func main() {
    add := func(a, b int) int {
-		return a + b
-	}
-	var addCurry function.Fn = func(values ...any) any {
-		return add(values[0].(int), values[1].(int))
-	}
-	add1 := addCurry.Curry(1)
-	result := add1(2)
+        return a + b
+    }
+    var addCurry function.Fn = func(values ...interface{}) interface{} {
+        return add(values[0].(int), values[1].(int))
+    }
+    add1 := addCurry.Curry(1)
+    result := add1(2)
    fmt.Println(result) //3
 }
 ```

-
-
 ### <span id="Compose">Compose</span>

 <p>Compose the function list from right to left, then return the composed function.</p>
@@ -168,8 +169,9 @@ func main() {
 <b>Signature:</b>

 ```go
-func Compose(fnList ...func(...any) any) func(...any) any
+func Compose(fnList ...func(...interface{}) interface{}) func(...interface{}) interface{}
 ```
+
 <b>Example:</b>

 ```go
@@ -177,26 +179,24 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/function"
+    "github.com/duke-git/lancet/function"
 )

 func main() {
-    add1 := func(v ...any) any {
-		return v[0].(int) + 1
-	}
-    add2 := func(v ...any) any {
-		return v[0].(int) + 2
-	}
+    add1 := func(v ...interface{}) interface{} {
+        return v[0].(int) + 1
+    }
+    add2 := func(v ...interface{}) interface{} {
+        return v[0].(int) + 2
+    }

    add3 := function.Compose(add1, add2)
-	result := add3(1)
+    result := add3(1)

    fmt.Println(result) //4
 }
 ```

-
-
 ### <span id="Debounced">Debounced</span>

 <p>Creates a debounced function that delays invoking fn until after wait duration have elapsed since the last time the debounced function was invoked.</p>
@@ -206,6 +206,7 @@ func main() {
 ```go
 func Debounced(fn func(), duration time.Duration) func()
 ```
+
 <b>Example:</b>

 ```go
@@ -213,32 +214,30 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/function"
+    "github.com/duke-git/lancet/function"
 )

 func main() {
    count := 0
-	add := func() {
-		count++
-	}
+    add := func() {
+        count++
+    }

-	debouncedAdd := function.Debounced(add, 50*time.Microsecond)
-	function.debouncedAdd()
-	function.debouncedAdd()
-	function.debouncedAdd()
-	function.debouncedAdd()
+    debouncedAdd := function.Debounced(add, 50*time.Microsecond)
+    function.debouncedAdd()
+    function.debouncedAdd()
+    function.debouncedAdd()
+    function.debouncedAdd()

-	time.Sleep(100 * time.Millisecond)
-	fmt.Println(count) //1
+    time.Sleep(100 * time.Millisecond)
+    fmt.Println(count) //1

-	function.debouncedAdd()
-	time.Sleep(100 * time.Millisecond)
-	fmt.Println(count) //2
+    function.debouncedAdd()
+    time.Sleep(100 * time.Millisecond)
+    fmt.Println(count) //2
 }
 ```

-
-
 ### <span id="Delay">Delay</span>

 <p>Invoke function after delayed time.</p>
@@ -246,8 +245,9 @@ func main() {
 <b>Signature:</b>

 ```go
-func Delay(delay time.Duration, fn any, args ...any)
+func Delay(delay time.Duration, fn interface{}, args ...interface{})
 ```
+
 <b>Example:</b>

 ```go
@@ -255,19 +255,17 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/function"
+    "github.com/duke-git/lancet/function"
 )

 func main() {
-	var print = func(s string) {
-		fmt.Println(count) //test delay
-	}
-	function.Delay(2*time.Second, print, "test delay")
+    var print = func(s string) {
+        fmt.Println(count) //test delay
+    }
+    function.Delay(2*time.Second, print, "test delay")
 }
 ```

-
-
 ### <span id="Schedule">Schedule</span>

 <p>Invoke function every duration time, until close the returned bool chan.</p>
@@ -275,8 +273,9 @@ func main() {
 <b>Signature:</b>

 ```go
-func Schedule(d time.Duration, fn any, args ...any) chan bool
+func Schedule(d time.Duration, fn interface{}, args ...interface{}) chan bool
 ```
+
 <b>Example:</b>

 ```go
@@ -284,24 +283,65 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/function"
+    "github.com/duke-git/lancet/function"
 )

 func main() {
    var res []string
-	appendStr := func(s string) {
-		res = append(res, s)
-	}
+    appendStr := func(s string) {
+        res = append(res, s)
+    }

-	stop := function.Schedule(1*time.Second, appendStr, "*")
-	time.Sleep(5 * time.Second)
-	close(stop)
+    stop := function.Schedule(1*time.Second, appendStr, "*")
+    time.Sleep(5 * time.Second)
+    close(stop)

-	fmt.Println(res) //[* * * * *]
+    fmt.Println(res) //[* * * * *]
 }
 ```

+### <span id="Pipeline">Pipeline</span>

+<p>Pipeline takes a list of functions and returns a function whose param will be passed into
+the functions one by one.</p>
+
+<b>Signature:</b>
+
+```go
+func Pipeline(funcs ...func(interface{}) interface{}) func(interface{}) interface{}
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/function"
+)
+
+func main() {
+    addOne := func(x interface{}) interface{} {
+		return x.(int) + 1
+	}
+	double := func(x interface{}) interface{} {
+		return 2 * x.(int)
+	}
+	square := func(x interface{}) interface{} {
+		return x.(int) * x.(int)
+	}
+
+	f := function.Pipeline(addOne, double, square)
+
+    result := fn(2)
+
+    fmt.Println(result)
+
+    // Output:
+    // 36
+}
+```

 ### <span id="Watcher">Watcher</span>

@@ -311,15 +351,16 @@ func main() {

 ```go
 type Watcher struct {
-	startTime int64
-	stopTime  int64
-	excuting  bool
+    startTime int64
+    stopTime  int64
+    excuting  bool
 }
 func (w *Watcher) Start() //start the watcher
 func (w *Watcher) Stop() //stop the watcher
 func (w *Watcher) Reset() //reset the watcher
 func (w *Watcher) GetElapsedTime() time.Duration //get the elapsed time of function execution
 ```
+
 <b>Example:</b>

 ```go
@@ -327,38 +368,35 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/function"
+    "github.com/duke-git/lancet/function"
 )

 func main() {
    w := &function.Watcher{}
-	w.Start()
+    w.Start()

-	longRunningTask()
+    longRunningTask()

-	fmt.Println(w.excuting) //true
+    fmt.Println(w.excuting) //true

-	w.Stop()
+    w.Stop()

-	eapsedTime := w.GetElapsedTime().Milliseconds()
-	fmt.Println(eapsedTime)
+    eapsedTime := w.GetElapsedTime().Milliseconds()
+    fmt.Println(eapsedTime)

-	w.Reset()
+    w.Reset()

-	fmt.Println(w.excuting) //false
+    fmt.Println(w.excuting) //false

-	fmt.Println(w.startTime) //0
-	fmt.Println(w.stopTime) //0
+    fmt.Println(w.startTime) //0
+    fmt.Println(w.stopTime) //0
 }

 func longRunningTask() {
-	var slice []int64
-	for i := 0; i < 10000000; i++ {
-		slice = append(slice, int64(i))
-	}
+    var slice []int64
+    for i := 0; i < 10000000; i++ {
+        slice = append(slice, int64(i))
+    }
 }

 ```
-
-
-
--- a/docs/function_zh-CN.md
+++ b/docs/function_zh-CN.md
@@ -1,47 +1,52 @@
 # Function
-function函数包控制函数执行流程，包含部分函数式编程。
+
+function 函数包控制函数执行流程，包含部分函数式编程。

 <div STYLE="page-break-after: always;"></div>

 ## 源码:

- [https://github.com/duke-git/lancet/blob/main/function/function.go](https://github.com/duke-git/lancet/blob/main/function/function.go)
- [https://github.com/duke-git/lancet/blob/main/function/watcher.go](https://github.com/duke-git/lancet/blob/main/function/watcher.go)
+[https://github.com/duke-git/lancet/blob/v1/function/function.go](https://github.com/duke-git/lancet/blob/v1/function/function.go)
+[https://github.com/duke-git/lancet/blob/v1/function/watcher.go](https://github.com/duke-git/lancet/blob/v1/function/watcher.go)

 <div STYLE="page-break-after: always;"></div>

 ## 用法:
+
 ```go
 import (
-    "github.com/duke-git/lancet/v2/function"
+    "github.com/duke-git/lancet/function"
 )
 ```

 <div STYLE="page-break-after: always;"></div>

 ## 目录
- [After](#After)
- [Before](#Before)
- [Curry](#Curry)
- [Compose](#Compose)
- [Debounced](#Debounced)
- [Delay](#Delay)
- [Watcher](#Watcher)
+
+-   [After](#After)
+-   [Before](#Before)
+-   [Curry](#Curry)
+-   [Compose](#Compose)
+-   [Debounced](#Debounced)
+-   [Delay](#Delay)
+-   [Pipeline](#Pipeline)
+-   [Schedule](#Schedule)
+-   [Watcher](#Watcher)

 <div STYLE="page-break-after: always;"></div>

 ## 文档

-
-
 ### <span id="After">After</span>
+
 <p>创建一个函数，当他被调用n或更多次之后将马上触发fn</p>

 <b>函数签名:</b>

 ```go
-func After(n int, fn any) func(args ...any) []reflect.Value
+func After(n int, fn interface{}) func(args ...interface{}) []reflect.Value
 ```
+
 <b>例子:</b>

 ```go
@@ -49,37 +54,35 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/function"
+    "github.com/duke-git/lancet/function"
 )

 func main() {
-	arr := []string{"a", "b"}
-	f := function.After(len(arr), func(i int) int {
-		fmt.Println("last print")
-		return i
-	})
+    arr := []string{"a", "b"}
+    f := function.After(len(arr), func(i int) int {
+        fmt.Println("last print")
+        return i
+    })

-	type cb func(args ...any) []reflect.Value
-	print := func(i int, s string, fn cb) {
-		fmt.Printf("arr[%d] is %s \n", i, s)
-		fn(i)
-	}
+    type cb func(args ...interface{}) []reflect.Value
+    print := func(i int, s string, fn cb) {
+        fmt.Printf("arr[%d] is %s \n", i, s)
+        fn(i)
+    }

-	fmt.Println("arr is", arr)
-	for i := 0; i < len(arr); i++ {
-		print(i, arr[i], f)
-	}
+    fmt.Println("arr is", arr)
+    for i := 0; i < len(arr); i++ {
+        print(i, arr[i], f)
+    }

    //output:
    // arr is [a b]
-    // arr[0] is a 
-    // arr[1] is b 
+    // arr[0] is a
+    // arr[1] is b
    // last print
 }
 ```

-
-
 ### <span id="Before">Before</span>

 <p>创建一个函数，调用次数不超过n次，之后再调用这个函数，将返回一次最后调用fn的结果</p>
@@ -87,8 +90,9 @@ func main() {
 <b>函数签名:</b>

 ```go
-func Before(n int, fn any) func(args ...any) []reflect.Value
+func Before(n int, fn interface{}) func(args ...interface{}) []reflect.Value
 ```
+
 <b>例子:</b>

 ```go
@@ -96,36 +100,34 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/function"
-    "github.com/duke-git/lancet/v2/internal"
+    "github.com/duke-git/lancet/function"
+    "github.com/duke-git/lancet/internal"
 )

 func main() {
-	assert := internal.NewAssert(t, "TestBefore")
+    assert := internal.NewAssert(t, "TestBefore")

-	arr := []string{"a", "b", "c", "d", "e"}
-	f := function.Before(3, func(i int) int {
-		return i
-	})
+    arr := []string{"a", "b", "c", "d", "e"}
+    f := function.Before(3, func(i int) int {
+        return i
+    })

-	var res []int64
-	type cb func(args ...any) []reflect.Value
-	appendStr := func(i int, s string, fn cb) {
-		v := fn(i)
-		res = append(res, v[0].Int())
-	}
+    var res []int64
+    type cb func(args ...interface{}) []reflect.Value
+    appendStr := func(i int, s string, fn cb) {
+        v := fn(i)
+        res = append(res, v[0].Int())
+    }

-	for i := 0; i < len(arr); i++ {
-		appendStr(i, arr[i], f)
-	}
+    for i := 0; i < len(arr); i++ {
+        appendStr(i, arr[i], f)
+    }

-	expected := []int64{0, 1, 2, 2, 2}
-	assert.Equal(expected, res)
+    expected := []int64{0, 1, 2, 2, 2}
+    assert.Equal(expected, res)
 }
 ```

-
-
 ### <span id="Curry">Curry</span>

 <p>创建一个柯里化的函数</p>
@@ -133,9 +135,10 @@ func main() {
 <b>函数签名:</b>

 ```go
-type Fn func(...any) any
-func (f Fn) Curry(i any) func(...any) any
+type Fn func(...interface{}) interface{}
+func (f Fn) Curry(i interface{}) func(...interface{}) interface{}
 ```
+
 <b>例子:</b>

 ```go
@@ -143,24 +146,22 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/function"
+    "github.com/duke-git/lancet/function"
 )

 func main() {
-	add := func(a, b int) int {
-		return a + b
-	}
-	var addCurry function.Fn = func(values ...any) any {
-		return add(values[0].(int), values[1].(int))
-	}
-	add1 := addCurry.Curry(1)
-	result := add1(2)
-	fmt.Println(result) //3
+    add := func(a, b int) int {
+        return a + b
+    }
+    var addCurry function.Fn = func(values ...interface{}) interface{} {
+        return add(values[0].(int), values[1].(int))
+    }
+    add1 := addCurry.Curry(1)
+    result := add1(2)
+    fmt.Println(result) //3
 }
 ```

-
-
 ### <span id="Compose">Compose</span>

 <p>从右至左组合函数列表fnList， 返回组合后的函数</p>
@@ -168,8 +169,9 @@ func main() {
 <b>函数签名:</b>

 ```go
-func Compose(fnList ...func(...any) any) func(...any) any
+func Compose(fnList ...func(...interface{}) interface{}) func(...interface{}) interface{}
 ```
+
 <b>例子:</b>

 ```go
@@ -177,26 +179,24 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/function"
+    "github.com/duke-git/lancet/function"
 )

 func main() {
-	add1 := func(v ...any) any {
-		return v[0].(int) + 1
-	}
-	add2 := func(v ...any) any {
-		return v[0].(int) + 2
-	}
+    add1 := func(v ...interface{}) interface{} {
+        return v[0].(int) + 1
+    }
+    add2 := func(v ...interface{}) interface{} {
+        return v[0].(int) + 2
+    }

-	add3 := function.Compose(add1, add2)
-	result := add3(1)
+    add3 := function.Compose(add1, add2)
+    result := add3(1)

-	fmt.Println(result) //4
+    fmt.Println(result) //4
 }
 ```

-
-
 ### <span id="Debounced">Debounced</span>

 <p>创建一个 debounced 函数，该函数延迟调用 fn 直到自上次调用 debounced 函数后等待持续时间过去。</p>
@@ -206,6 +206,7 @@ func main() {
 ```go
 func Debounced(fn func(), duration time.Duration) func()
 ```
+
 <b>例子:</b>

 ```go
@@ -213,32 +214,30 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/function"
+    "github.com/duke-git/lancet/function"
 )

 func main() {
-	count := 0
-	add := func() {
-		count++
-	}
+    count := 0
+    add := func() {
+        count++
+    }

-	debouncedAdd := function.Debounced(add, 50*time.Microsecond)
-	function.debouncedAdd()
-	function.debouncedAdd()
-	function.debouncedAdd()
-	function.debouncedAdd()
+    debouncedAdd := function.Debounced(add, 50*time.Microsecond)
+    function.debouncedAdd()
+    function.debouncedAdd()
+    function.debouncedAdd()
+    function.debouncedAdd()

-	time.Sleep(100 * time.Millisecond)
-	fmt.Println(count) //1
+    time.Sleep(100 * time.Millisecond)
+    fmt.Println(count) //1

-	function.debouncedAdd()
-	time.Sleep(100 * time.Millisecond)
-	fmt.Println(count) //2
+    function.debouncedAdd()
+    time.Sleep(100 * time.Millisecond)
+    fmt.Println(count) //2
 }
 ```

-
-
 ### <span id="Delay">Delay</span>

 <p>延迟delay时间后调用函数</p>
@@ -246,8 +245,9 @@ func main() {
 <b>函数签名:</b>

 ```go
-func Delay(delay time.Duration, fn any, args ...any)
+func Delay(delay time.Duration, fn interface{}, args ...interface{})
 ```
+
 <b>例子:</b>

 ```go
@@ -255,19 +255,17 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/function"
+    "github.com/duke-git/lancet/function"
 )

 func main() {
-	var print = func(s string) {
-		fmt.Println(count) //test delay
-	}
-	function.Delay(2*time.Second, print, "test delay")
+    var print = func(s string) {
+        fmt.Println(count) //test delay
+    }
+    function.Delay(2*time.Second, print, "test delay")
 }
 ```

-
-
 ### <span id="Schedule">Schedule</span>

 <p>每次持续时间调用函数，直到关闭返回的 bool chan</p>
@@ -275,8 +273,9 @@ func main() {
 <b>函数签名:</b>

 ```go
-func Schedule(d time.Duration, fn any, args ...any) chan bool
+func Schedule(d time.Duration, fn interface{}, args ...interface{}) chan bool
 ```
+
 <b>例子:</b>

 ```go
@@ -284,24 +283,64 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/function"
+    "github.com/duke-git/lancet/function"
 )

 func main() {
    var res []string
-	appendStr := func(s string) {
-		res = append(res, s)
-	}
+    appendStr := func(s string) {
+        res = append(res, s)
+    }

-	stop := function.Schedule(1*time.Second, appendStr, "*")
-	time.Sleep(5 * time.Second)
-	close(stop)
+    stop := function.Schedule(1*time.Second, appendStr, "*")
+    time.Sleep(5 * time.Second)
+    close(stop)

    fmt.Println(res) //[* * * * *]
 }
 ```

+### <span id="Pipeline">Pipeline</span>

+<p>管道执行多个函数</p>
+
+<b>函数签名:</b>
+
+```go
+func Pipeline(funcs ...func(interface{}) interface{}) func(interface{}) interface{}
+```
+
+<b>例子:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/function"
+)
+
+func main() {
+    addOne := func(x interface{}) interface{} {
+		return x.(int) + 1
+	}
+	double := func(x interface{}) interface{} {
+		return 2 * x.(int)
+	}
+	square := func(x interface{}) interface{} {
+		return x.(int) * x.(int)
+	}
+
+	f := function.Pipeline(addOne, double, square)
+
+    result := fn(2)
+
+    fmt.Println(result)
+
+    // Output:
+    // 36
+}
+```

 ### <span id="Watcher">Watcher</span>

@@ -311,15 +350,16 @@ func main() {

 ```go
 type Watcher struct {
-	startTime int64
-	stopTime  int64
-	excuting  bool
+    startTime int64
+    stopTime  int64
+    excuting  bool
 }
 func (w *Watcher) Start() //start the watcher
 func (w *Watcher) Stop() //stop the watcher
 func (w *Watcher) Reset() //reset the watcher
 func (w *Watcher) GetElapsedTime() time.Duration //get the elapsed time of function execution
 ```
+
 <b>例子:</b>

 ```go
@@ -327,38 +367,35 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/function"
+    "github.com/duke-git/lancet/function"
 )

 func main() {
    w := &function.Watcher{}
-	w.Start()
+    w.Start()

-	longRunningTask()
+    longRunningTask()

-	fmt.Println(w.excuting) //true
+    fmt.Println(w.excuting) //true

-	w.Stop()
+    w.Stop()

-	eapsedTime := w.GetElapsedTime().Milliseconds()
-	fmt.Println(eapsedTime)
+    eapsedTime := w.GetElapsedTime().Milliseconds()
+    fmt.Println(eapsedTime)

-	w.Reset()
+    w.Reset()

-	fmt.Println(w.excuting) //false
+    fmt.Println(w.excuting) //false

-	fmt.Println(w.startTime) //0
-	fmt.Println(w.stopTime) //0
+    fmt.Println(w.startTime) //0
+    fmt.Println(w.stopTime) //0
 }

 func longRunningTask() {
-	var slice []int64
-	for i := 0; i < 10000000; i++ {
-		slice = append(slice, int64(i))
-	}
+    var slice []int64
+    for i := 0; i < 10000000; i++ {
+        slice = append(slice, int64(i))
+    }
 }

 ```
-
-
-
--- a/docs/mathutil.md
+++ b/docs/mathutil.md
@@ -1,72 +1,49 @@
 # Mathutil
+
 Package mathutil implements some functions for math calculation.

 <div STYLE="page-break-after: always;"></div>

 ## Source:

- [https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go](https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go)
-
+[https://github.com/duke-git/lancet/blob/v1/mathutil/mathutil.go](https://github.com/duke-git/lancet/blob/v1/mathutil/mathutil.go)

 <div STYLE="page-break-after: always;"></div>

 ## Example:
+
 ```go
 import (
-    "github.com/duke-git/lancet/v2/mathutil"
+    "github.com/duke-git/lancet/mathutil"
 )
 ```

 <div STYLE="page-break-after: always;"></div>

 ## Index
- [Average](#Average)
- [Exponent](#Exponent)
- [Fibonacci](#Fibonacci)
- [Factorial](#Factorial)
- [Max](#Max)
- [Min](#Min)

- [Percent](#Percent)
- [RoundToFloat](#RoundToFloat)
- [RoundToString](#RoundToString)
- [TruncRound](#TruncRound)
+-   [Exponent](#Exponent)
+-   [Fibonacci](#Fibonacci)
+-   [Factorial](#Factorial)
+-   [Percent](#Percent)
+-   [RoundToFloat](#RoundToFloat)
+-   [RoundToString](#RoundToString)
+-   [TruncRound](#TruncRound)
+-   [AngleToRadian](#AngleToRadian)
+-   [RadianToAngle](#RadianToAngle)
+-   [PointDistance](#PointDistance)
+-   [IsPrime](#IsPrime)
+-   [GCD](#GCD)
+-   [LCM](#LCM)
+-   [Cos](#Cos)
+-   [Sin](#Sin)

 <div STYLE="page-break-after: always;"></div>

 ## Documentation

-
-
-### <span id="Average">Average</span>
-<p>Return average value of numbers. Maybe call RoundToFloat to round result.</p>
-
-<b>Signature:</b>
-
-```go
-func Average[T lancetconstraints.Number](numbers ...T) T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
-)
-
-func main() {
-	fmt.Println(mathutil.Average(0, 0)) //0
-	fmt.Println(mathutil.Average(1, 1)) //1
-	avg := mathutil.Average(1.2, 1.4) //1.2999999998
-	roundAvg := mmathutil.RoundToFloat(avg, 1) // 1.3
-}
-```
-
-
-
 ### <span id="Exponent">Exponent</span>
+
 <p>Calculate x to the nth power.</p>

 <b>Signature:</b>
@@ -74,6 +51,7 @@ func main() {
 ```go
 func Exponent(x, n int64) int64
 ```
+
 <b>Example:</b>

 ```go
@@ -81,19 +59,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
+    "github.com/duke-git/lancet/mathutil"
 )

 func main() {
-	fmt.Println(mathutil.Exponent(10, 0)) //1
-	fmt.Println(mathutil.Exponent(10, 1)) //10
-	fmt.Println(mathutil.Exponent(10, 2)) //100
+    fmt.Println(mathutil.Exponent(10, 0)) //1
+    fmt.Println(mathutil.Exponent(10, 1)) //10
+    fmt.Println(mathutil.Exponent(10, 2)) //100
 }
 ```

-
-
 ### <span id="Fibonacci">Fibonacci</span>
+
 <p>Calculate the nth number of fibonacci sequence.</p>

 <b>Signature:</b>
@@ -101,6 +78,7 @@ func main() {
 ```go
 func Fibonacci(first, second, n int) int
 ```
+
 <b>Example:</b>

 ```go
@@ -108,21 +86,20 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
+    "github.com/duke-git/lancet/mathutil"
 )

 func main() {
-	fmt.Println(mathutil.Fibonacci(1, 1, 1)) //1
-	fmt.Println(mathutil.Fibonacci(1, 1, 2)) //1
-	fmt.Println(mathutil.Fibonacci(1, 1, 3)) //2
-	fmt.Println(mathutil.Fibonacci(1, 1, 4)) //3
-	fmt.Println(mathutil.Fibonacci(1, 1, 5)) //5
+    fmt.Println(mathutil.Fibonacci(1, 1, 1)) //1
+    fmt.Println(mathutil.Fibonacci(1, 1, 2)) //1
+    fmt.Println(mathutil.Fibonacci(1, 1, 3)) //2
+    fmt.Println(mathutil.Fibonacci(1, 1, 4)) //3
+    fmt.Println(mathutil.Fibonacci(1, 1, 5)) //5
 }
 ```

-
-
 ### <span id="Factorial">Factorial</span>
+
 <p>Calculate the factorial of x.</p>

 <b>Signature:</b>
@@ -130,6 +107,7 @@ func main() {
 ```go
 func Factorial(x uint) uint
 ```
+
 <b>Example:</b>

 ```go
@@ -137,74 +115,19 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
+    "github.com/duke-git/lancet/mathutil"
 )

 func main() {
-	fmt.Println(mathutil.Factorial(0)) //1
-	fmt.Println(mathutil.Factorial(1)) //1
-	fmt.Println(mathutil.Factorial(2)) //2
-	fmt.Println(mathutil.Factorial(3)) //6
+    fmt.Println(mathutil.Factorial(0)) //1
+    fmt.Println(mathutil.Factorial(1)) //1
+    fmt.Println(mathutil.Factorial(2)) //2
+    fmt.Println(mathutil.Factorial(3)) //6
 }
 ```

-
-
-### <span id="Max">Max</span>
-<p>Return max value of numbers.</p>
-
-<b>Signature:</b>
-
-```go
-func Max[T lancetconstraints.Number](numbers ...T) T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
-)
-
-func main() {
-	fmt.Println(mathutil.Max(0, 0)) //0
-	fmt.Println(mathutil.Max(1, 2, 3)) //3
-	fmt.Println(mathutil.Max(1.2, 1.4, 1.1, 1.4)) //1.4
-}
-```
-
-
-
-### <span id="Min">Min</span>
-<p>Return min value of numbers.</p>
-
-<b>Signature:</b>
-
-```go
-func Min[T lancetconstraints.Number](numbers ...T) T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
-)
-
-func main() {
-	fmt.Println(mathutil.Min(0, 0)) //0
-	fmt.Println(mathutil.Min(1, 2, 3)) //1
-	fmt.Println(mathutil.Min(1.2, 1.4, 1.1, 1.4)) //1.1
-}
-```
-
-
-
 ### <span id="Percent">Percent</span>
+
 <p>calculate the percentage of val to total, retain n decimal places.</p>

 <b>Signature:</b>
@@ -212,6 +135,7 @@ func main() {
 ```go
 func Percent(val, total float64, n int) float64
 ```
+
 <b>Example:</b>

 ```go
@@ -219,18 +143,17 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
+    "github.com/duke-git/lancet/mathutil"
 )

 func main() {
-	fmt.Println(mathutil.Percent(1, 2, 2)) //1
-	fmt.Println(mathutil.Percent(0.1, 0.3, 2)) //33.33
+    fmt.Println(mathutil.Percent(1, 2, 2)) //1
+    fmt.Println(mathutil.Percent(0.1, 0.3, 2)) //33.33
 }
 ```

-
-
 ### <span id="RoundToFloat">RoundToFloat</span>
+
 <p>Round float up to n decimal places.</p>

 <b>Signature:</b>
@@ -238,6 +161,7 @@ func main() {
 ```go
 func RoundToFloat(x float64, n int) float64
 ```
+
 <b>Example:</b>

 ```go
@@ -245,22 +169,20 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
+    "github.com/duke-git/lancet/mathutil"
 )

 func main() {
-	fmt.Println(mathutil.RoundToFloat(0, 0)) //0
-	fmt.Println(mathutil.RoundToFloat(0, 1)) //0
-	fmt.Println(mathutil.RoundToFloat(0.124, 2)) //0.12
-	fmt.Println(mathutil.RoundToFloat(0.125, 2)) //0.13
-	fmt.Println(mathutil.RoundToFloat(0.125, 3)) //0.125
+    fmt.Println(mathutil.RoundToFloat(0, 0)) //0
+    fmt.Println(mathutil.RoundToFloat(0, 1)) //0
+    fmt.Println(mathutil.RoundToFloat(0.124, 2)) //0.12
+    fmt.Println(mathutil.RoundToFloat(0.125, 2)) //0.13
+    fmt.Println(mathutil.RoundToFloat(0.125, 3)) //0.125
 }
 ```

-
-
-
 ### <span id="RoundToString">RoundToString</span>
+
 <p>Round float up to n decimal places. will return string.</p>

 <b>Signature:</b>
@@ -268,6 +190,7 @@ func main() {
 ```go
 func RoundToString(x float64, n int) string
 ```
+
 <b>Example:</b>

 ```go
@@ -275,21 +198,20 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
+    "github.com/duke-git/lancet/mathutil"
 )

 func main() {
-	fmt.Println(mathutil.RoundToString(0, 0)) //"0"
-	fmt.Println(mathutil.RoundToString(0, 1)) //"0.0:
-	fmt.Println(mathutil.RoundToString(0.124, 2)) //"0.12"
-	fmt.Println(mathutil.RoundToString(0.125, 2)) //"0.13"
-	fmt.Println(mathutil.RoundToString(0.125, 3)) //"0.125"
+    fmt.Println(mathutil.RoundToString(0, 0)) //"0"
+    fmt.Println(mathutil.RoundToString(0, 1)) //"0.0:
+    fmt.Println(mathutil.RoundToString(0.124, 2)) //"0.12"
+    fmt.Println(mathutil.RoundToString(0.125, 2)) //"0.13"
+    fmt.Println(mathutil.RoundToString(0.125, 3)) //"0.125"
 }
 ```

-
-
 ### <span id="TruncRound">TruncRound</span>
+
 <p>Round float off n decimal places.</p>

 <b>Signature:</b>
@@ -297,6 +219,7 @@ func main() {
 ```go
 func TruncRound(x float64, n int) float64
 ```
+
 <b>Example:</b>

 ```go
@@ -304,17 +227,319 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
+    "github.com/duke-git/lancet/mathutil"
 )

 func main() {
-	fmt.Println(mathutil.TruncRound(0, 0)) //0
-	fmt.Println(mathutil.TruncRound(0, 1)) //0
-	fmt.Println(mathutil.TruncRound(0.124, 2)) //0.12
-	fmt.Println(mathutil.TruncRound(0.125, 2)) //0.12
-	fmt.Println(mathutil.TruncRound(0.125, 3)) //0.125
+    fmt.Println(mathutil.TruncRound(0, 0)) //0
+    fmt.Println(mathutil.TruncRound(0, 1)) //0
+    fmt.Println(mathutil.TruncRound(0.124, 2)) //0.12
+    fmt.Println(mathutil.TruncRound(0.125, 2)) //0.12
+    fmt.Println(mathutil.TruncRound(0.125, 3)) //0.125
+}
+```
+
+### <span id="AngleToRadian">AngleToRadian</span>
+
+<p>Converts angle value to radian value.</p>
+
+<b>Signature:</b>
+
+```go
+func AngleToRadian(angle float64) float64
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.AngleToRadian(45)
+    result2 := mathutil.AngleToRadian(90)
+    result3 := mathutil.AngleToRadian(180)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 0.7853981633974483
+    // 1.5707963267948966
+    // 3.141592653589793
+}
+```
+
+### <span id="RadianToAngle">RadianToAngle</span>
+
+<p>Converts radian value to angle value.</p>
+
+<b>Signature:</b>
+
+```go
+func RadianToAngle(radian float64) float64
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.RadianToAngle(math.Pi)
+    result2 := mathutil.RadianToAngle(math.Pi / 2)
+    result3 := mathutil.RadianToAngle(math.Pi / 4)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 180
+    // 90
+    // 45
+}
+```
+
+### <span id="PointDistance">PointDistance</span>
+
+<p>Caculates two points distance.</p>
+
+<b>Signature:</b>
+
+```go
+func PointDistance(x1, y1, x2, y2 float64) float64
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.PointDistance(1, 1, 4, 5)
+
+    fmt.Println(result1)
+
+    // Output:
+    // 5
+}
+```
+
+### <span id="IsPrime">IsPrime</span>
+
+<p>Checks if number is prime number.</p>
+
+<b>Signature:</b>
+
+```go
+func IsPrime(n int) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.IsPrime(-1)
+	result2 := mathutil.IsPrime(0)
+	result3 := mathutil.IsPrime(1)
+	result4 := mathutil.IsPrime(2)
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+
+	// Output:
+	// false
+	// false
+	// false
+	// true
+}
+```
+
+### <span id="GCD">GCD</span>
+
+<p>Return greatest common divisor (GCD) of integers.</p>
+
+<b>Signature:</b>
+
+```go
+func GCD(integers ...int) int
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.GCD(1, 1)
+    result2 := mathutil.GCD(1, -1)
+    result3 := mathutil.GCD(-1, 1)
+    result4 := mathutil.GCD(-1, -1)
+    result5 := mathutil.GCD(3, 6, 9)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+
+    // Output:
+    // 1
+    // 1
+    // -1
+    // -1
+    // 3
+}
+```
+
+### <span id="LCM">LCM</span>
+
+<p>Return Least Common Multiple (LCM) of integers.</p>
+
+<b>Signature:</b>
+
+```go
+func LCM(integers ...int) int
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.LCM(1, 1)
+    result2 := mathutil.LCM(1, 2)
+    result3 := mathutil.LCM(3, 6, 9)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 1
+    // 2
+    // 18
 }
 ```


+### <span id="Cos">Cos</span>

+<p>Returns the cosine of the radian argument.</p>
+
+<b>Signature:</b>
+
+```go
+func Cos(radian float64, precision ...int) float64
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.Cos(0)
+    result2 := mathutil.Cos(90)
+    result3 := mathutil.Cos(180)
+    result4 := mathutil.Cos(math.Pi)
+    result5 := mathutil.Cos(math.Pi / 2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+
+    // Output:
+    // 1
+    // -0.447
+    // -0.598
+    // -1
+    // 0
+}
+```
+
+
+### <span id="Sin">Sin</span>
+
+<p>Returns the sine of the radian argument.</p>
+
+<b>Signature:</b>
+
+```go
+func Sin(radian float64, precision ...int) float64
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.Sin(0)
+    result2 := mathutil.Sin(90)
+    result3 := mathutil.Sin(180)
+    result4 := mathutil.Sin(math.Pi)
+    result5 := mathutil.Sin(math.Pi / 2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+
+    // Output:
+    // 0
+    // 0.894
+    // -0.801
+    // 0
+    // 1
+}
+```
--- a/docs/mathutil_zh-CN.md
+++ b/docs/mathutil_zh-CN.md
@@ -1,70 +1,49 @@
 # Mathutil
-mathutil包实现了一些数学计算的函数.
+
+mathutil 包实现了一些数学计算的函数.

 <div STYLE="page-break-after: always;"></div>

 ## 源码:

- [https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go](https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go)
-
+[https://github.com/duke-git/lancet/blob/v1/mathutil/mathutil.go](https://github.com/duke-git/lancet/blob/v1/mathutil/mathutil.go)

 <div STYLE="page-break-after: always;"></div>

 ## 用法:
+
 ```go
 import (
-    "github.com/duke-git/lancet/v2/mathutil"
+    "github.com/duke-git/lancet/mathutil"
 )
 ```

 <div STYLE="page-break-after: always;"></div>

 ## 目录
- [Average](#Average)
- [Exponent](#Exponent)
- [Fibonacci](#Fibonacci)
- [Factorial](#Factorial)
- [Max](#Max)
- [Min](#Min)
-  
- [Percent](#Percent)
- [RoundToFloat](#RoundToFloat)
- [RoundToString](#RoundToString)
- [TruncRound](#TruncRound)
+
+-   [Exponent](#Exponent)
+-   [Fibonacci](#Fibonacci)
+-   [Factorial](#Factorial)
+-   [Percent](#Percent)
+-   [RoundToFloat](#RoundToFloat)
+-   [RoundToString](#RoundToString)
+-   [TruncRound](#TruncRound)
+-   [AngleToRadian](#AngleToRadian)
+-   [RadianToAngle](#RadianToAngle)
+-   [PointDistance](#PointDistance)
+-   [IsPrime](#IsPrime)
+-   [GCD](#GCD)
+-   [LCM](#LCM)
+-   [Cos](#Cos)
+-   [Sin](#Sin)

 <div STYLE="page-break-after: always;"></div>

 ## Documentation

-
-### <span id="Average">Average</span>
-<p>计算平均数. 可能需要对结果调用RoundToFloat方法四舍五入</p>
-
-<b>函数签名:</b>
-
-```go
-func Average[T lancetconstraints.Number](numbers ...T) T
-```
-<b>例子:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
-)
-
-func main() {
-	fmt.Println(mathutil.Average(0, 0)) //0
-	fmt.Println(mathutil.Average(1, 1)) //1
-	avg := mathutil.Average(1.2, 1.4) //1.2999999998
-	roundAvg := mmathutil.RoundToFloat(avg, 1) // 1.3
-}
-```
-
-
 ### <span id="Exponent">Exponent</span>
+
 <p>指数计算（x的n次方）</p>

 <b>函数签名:</b>
@@ -72,6 +51,7 @@ func main() {
 ```go
 func Exponent(x, n int64) int64
 ```
+
 <b>例子:</b>

 ```go
@@ -79,19 +59,18 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
+    "github.com/duke-git/lancet/mathutil"
 )

 func main() {
-	fmt.Println(mathutil.Exponent(10, 0)) //1
-	fmt.Println(mathutil.Exponent(10, 1)) //10
-	fmt.Println(mathutil.Exponent(10, 2)) //100
+    fmt.Println(mathutil.Exponent(10, 0)) //1
+    fmt.Println(mathutil.Exponent(10, 1)) //10
+    fmt.Println(mathutil.Exponent(10, 2)) //100
 }
 ```

-
-
 ### <span id="Fibonacci">Fibonacci</span>
+
 <p>计算斐波那契数列的第n个数</p>

 <b>函数签名:</b>
@@ -99,6 +78,7 @@ func main() {
 ```go
 func Fibonacci(first, second, n int) int
 ```
+
 <b>例子:</b>

 ```go
@@ -106,21 +86,20 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
+    "github.com/duke-git/lancet/mathutil"
 )

 func main() {
-	fmt.Println(mathutil.Fibonacci(1, 1, 1)) //1
-	fmt.Println(mathutil.Fibonacci(1, 1, 2)) //1
-	fmt.Println(mathutil.Fibonacci(1, 1, 3)) //2
-	fmt.Println(mathutil.Fibonacci(1, 1, 4)) //3
-	fmt.Println(mathutil.Fibonacci(1, 1, 5)) //5
+    fmt.Println(mathutil.Fibonacci(1, 1, 1)) //1
+    fmt.Println(mathutil.Fibonacci(1, 1, 2)) //1
+    fmt.Println(mathutil.Fibonacci(1, 1, 3)) //2
+    fmt.Println(mathutil.Fibonacci(1, 1, 4)) //3
+    fmt.Println(mathutil.Fibonacci(1, 1, 5)) //5
 }
 ```

-
-
 ### <span id="Factorial">Factorial</span>
+
 <p>计算阶乘</p>

 <b>函数签名:</b>
@@ -128,6 +107,7 @@ func main() {
 ```go
 func Factorial(x uint) uint
 ```
+
 <b>例子:</b>

 ```go
@@ -135,73 +115,19 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
+    "github.com/duke-git/lancet/mathutil"
 )

 func main() {
-	fmt.Println(mathutil.Factorial(0)) //1
-	fmt.Println(mathutil.Factorial(1)) //1
-	fmt.Println(mathutil.Factorial(2)) //2
-	fmt.Println(mathutil.Factorial(3)) //6
+    fmt.Println(mathutil.Factorial(0)) //1
+    fmt.Println(mathutil.Factorial(1)) //1
+    fmt.Println(mathutil.Factorial(2)) //2
+    fmt.Println(mathutil.Factorial(3)) //6
 }
 ```

-
-### <span id="Max">Max</span>
-<p>返回参数中的最大数</p>
-
-<b>函数签名:</b>
-
-```go
-func Max[T lancetconstraints.Number](numbers ...T) T
-```
-<b>例子:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
-)
-
-func main() {
-	fmt.Println(mathutil.Max(0, 0)) //0
-	fmt.Println(mathutil.Max(1, 2, 3)) //3
-	fmt.Println(mathutil.Max(1.2, 1.4, 1.1, 1.4)) //1.4
-}
-```
-
-
-
-### <span id="Min">Min</span>
-<p>返回参数中的最小数</p>
-
-<b>函数签名:</b>
-
-```go
-func Min[T lancetconstraints.Number](numbers ...T) T
-```
-<b>例子:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
-)
-
-func main() {
-	fmt.Println(mathutil.Min(0, 0)) //0
-	fmt.Println(mathutil.Min(1, 2, 3)) //1
-	fmt.Println(mathutil.Min(1.2, 1.4, 1.1, 1.4)) //1.1
-}
-```
-
-
-
 ### <span id="Percent">Percent</span>
+
 <p>计算百分比，保留n位小数</p>

 <b>函数签名:</b>
@@ -209,6 +135,7 @@ func main() {
 ```go
 func Percent(val, total float64, n int) float64
 ```
+
 <b>例子:</b>

 ```go
@@ -216,18 +143,17 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
+    "github.com/duke-git/lancet/mathutil"
 )

 func main() {
-	fmt.Println(mathutil.Percent(1, 2, 2)) //1
-	fmt.Println(mathutil.Percent(0.1, 0.3, 2)) //33.33
+    fmt.Println(mathutil.Percent(1, 2, 2)) //1
+    fmt.Println(mathutil.Percent(0.1, 0.3, 2)) //33.33
 }
 ```

-
-
 ### <span id="RoundToFloat">RoundToFloat</span>
+
 <p>四舍五入，保留n位小数</p>

 <b>函数签名:</b>
@@ -235,6 +161,7 @@ func main() {
 ```go
 func RoundToFloat(x float64, n int) float64
 ```
+
 <b>例子:</b>

 ```go
@@ -242,22 +169,20 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
+    "github.com/duke-git/lancet/mathutil"
 )

 func main() {
-	fmt.Println(mathutil.RoundToFloat(0, 0)) //0
-	fmt.Println(mathutil.RoundToFloat(0, 1)) //0
-	fmt.Println(mathutil.RoundToFloat(0.124, 2)) //0.12
-	fmt.Println(mathutil.RoundToFloat(0.125, 2)) //0.13
-	fmt.Println(mathutil.RoundToFloat(0.125, 3)) //0.125
+    fmt.Println(mathutil.RoundToFloat(0, 0)) //0
+    fmt.Println(mathutil.RoundToFloat(0, 1)) //0
+    fmt.Println(mathutil.RoundToFloat(0.124, 2)) //0.12
+    fmt.Println(mathutil.RoundToFloat(0.125, 2)) //0.13
+    fmt.Println(mathutil.RoundToFloat(0.125, 3)) //0.125
 }
 ```

-
-
-
 ### <span id="RoundToString">RoundToString</span>
+
 <p>四舍五入，保留n位小数，返回字符串</p>

 <b>函数签名:</b>
@@ -265,6 +190,7 @@ func main() {
 ```go
 func RoundToString(x float64, n int) string
 ```
+
 <b>例子:</b>

 ```go
@@ -272,21 +198,20 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
+    "github.com/duke-git/lancet/mathutil"
 )

 func main() {
-	fmt.Println(mathutil.RoundToString(0, 0)) //"0"
-	fmt.Println(mathutil.RoundToString(0, 1)) //"0.0:
-	fmt.Println(mathutil.RoundToString(0.124, 2)) //"0.12"
-	fmt.Println(mathutil.RoundToString(0.125, 2)) //"0.13"
-	fmt.Println(mathutil.RoundToString(0.125, 3)) //"0.125"
+    fmt.Println(mathutil.RoundToString(0, 0)) //"0"
+    fmt.Println(mathutil.RoundToString(0, 1)) //"0.0:
+    fmt.Println(mathutil.RoundToString(0.124, 2)) //"0.12"
+    fmt.Println(mathutil.RoundToString(0.125, 2)) //"0.13"
+    fmt.Println(mathutil.RoundToString(0.125, 3)) //"0.125"
 }
 ```

-
-
 ### <span id="TruncRound">TruncRound</span>
+
 <p>截短n位小数（不进行四舍五入）</p>

 <b>函数签名:</b>
@@ -294,6 +219,7 @@ func main() {
 ```go
 func TruncRound(x float64, n int) float64
 ```
+
 <b>例子:</b>

 ```go
@@ -301,17 +227,320 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/mathutil"
+    "github.com/duke-git/lancet/mathutil"
 )

 func main() {
-	fmt.Println(mathutil.TruncRound(0, 0)) //0
-	fmt.Println(mathutil.TruncRound(0, 1)) //0
-	fmt.Println(mathutil.TruncRound(0.124, 2)) //0.12
-	fmt.Println(mathutil.TruncRound(0.125, 2)) //0.12
-	fmt.Println(mathutil.TruncRound(0.125, 3)) //0.125
+    fmt.Println(mathutil.TruncRound(0, 0)) //0
+    fmt.Println(mathutil.TruncRound(0, 1)) //0
+    fmt.Println(mathutil.TruncRound(0.124, 2)) //0.12
+    fmt.Println(mathutil.TruncRound(0.125, 2)) //0.12
+    fmt.Println(mathutil.TruncRound(0.125, 3)) //0.125
+}
+```
+
+### <span id="AngleToRadian">AngleToRadian</span>
+
+<p>将角度值转为弧度值</p>
+
+<b>函数签名:</b>
+
+```go
+func AngleToRadian(angle float64) float64
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.AngleToRadian(45)
+    result2 := mathutil.AngleToRadian(90)
+    result3 := mathutil.AngleToRadian(180)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 0.7853981633974483
+    // 1.5707963267948966
+    // 3.141592653589793
+}
+```
+
+### <span id="RadianToAngle">RadianToAngle</span>
+
+<p>将弧度值转为角度值</p>
+
+<b>函数签名:</b>
+
+```go
+func RadianToAngle(radian float64) float64
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.RadianToAngle(math.Pi)
+    result2 := mathutil.RadianToAngle(math.Pi / 2)
+    result3 := mathutil.RadianToAngle(math.Pi / 4)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 180
+    // 90
+    // 45
+}
+```
+
+### <span id="PointDistance">PointDistance</span>
+
+<p>计算两个坐标点的距离</p>
+
+<b>函数签名:</b>
+
+```go
+func PointDistance(x1, y1, x2, y2 float64) float64
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.PointDistance(1, 1, 4, 5)
+
+    fmt.Println(result1)
+
+    // Output:
+    // 5
+}
+```
+
+### <span id="IsPrime">IsPrime</span>
+
+<p>判断质数。</p>
+
+<b>函数签名:</b>
+
+```go
+func IsPrime(n int) bool
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.IsPrime(-1)
+	result2 := mathutil.IsPrime(0)
+	result3 := mathutil.IsPrime(1)
+	result4 := mathutil.IsPrime(2)
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+
+	// Output:
+	// false
+	// false
+	// false
+	// true
 }
 ```


+### <span id="GCD">GCD</span>

+<p>计算整数最大公约数。</p>
+
+<b>函数签名:</b>
+
+```go
+func GCD(integers ...int) int
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.GCD(1, 1)
+    result2 := mathutil.GCD(1, -1)
+    result3 := mathutil.GCD(-1, 1)
+    result4 := mathutil.GCD(-1, -1)
+    result5 := mathutil.GCD(3, 6, 9)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+
+    // Output:
+    // 1
+    // 1
+    // -1
+    // -1
+    // 3
+}
+```
+
+### <span id="LCM">LCM</span>
+
+<p>计算整数最小公倍数。</p>
+
+<b>函数签名:</b>
+
+```go
+func LCM(integers ...int) int
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.LCM(1, 1)
+    result2 := mathutil.LCM(1, 2)
+    result3 := mathutil.LCM(3, 6, 9)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 1
+    // 2
+    // 18
+}
+```
+
+
+### <span id="Cos">Cos</span>
+
+<p>计算弧度的余弦值。</p>
+
+<b>函数签名:</b>
+
+```go
+func Cos(radian float64, precision ...int) float64
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.Cos(0)
+    result2 := mathutil.Cos(90)
+    result3 := mathutil.Cos(180)
+    result4 := mathutil.Cos(math.Pi)
+    result5 := mathutil.Cos(math.Pi / 2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+
+    // Output:
+    // 1
+    // -0.447
+    // -0.598
+    // -1
+    // 0
+}
+```
+
+
+### <span id="Sin">Sin</span>
+
+<p>计算弧度的正弦值。</p>
+
+<b>函数签名:</b>
+
+```go
+func Sin(radian float64, precision ...int) float64
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.Sin(0)
+    result2 := mathutil.Sin(90)
+    result3 := mathutil.Sin(180)
+    result4 := mathutil.Sin(math.Pi)
+    result5 := mathutil.Sin(math.Pi / 2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+
+    // Output:
+    // 0
+    // 0.894
+    // -0.801
+    // 0
+    // 1
+}
+```
--- a/docs/netutil.md
+++ b/docs/netutil.md
--- a/docs/netutil_zh-CN.md
+++ b/docs/netutil_zh-CN.md
--- a/docs/random.md
+++ b/docs/random.md
@@ -1,36 +1,42 @@
 # Random
+
 Package random implements some basic functions to generate random int and string.

 <div STYLE="page-break-after: always;"></div>

 ## Source:

- [https://github.com/duke-git/lancet/blob/main/random/random.go](https://github.com/duke-git/lancet/blob/main/random/random.go)
-
+[https://github.com/duke-git/lancet/blob/v1/random/random.go](https://github.com/duke-git/lancet/blob/v1/random/random.go)

 <div STYLE="page-break-after: always;"></div>

 ## Usage:
+
 ```go
 import (
-    "github.com/duke-git/lancet/v2/random"
+    "github.com/duke-git/lancet/random"
 )
 ```

 <div STYLE="page-break-after: always;"></div>

 ## Index
- [RandBytes](#RandBytes)
- [RandInt](#RandInt)
- [RandString](#RandString)
- [UUIdV4](#UUIdV4)
+
+-   [RandBytes](#RandBytes)
+-   [RandInt](#RandInt)
+-   [RandString](#RandString)
+-   [RandUpper](#RandUpper)
+-   [RandLower](#RandLower)
+-   [RandNumeral](#RandNumeral)
+-   [RandNumeralOrLetter](#RandNumeralOrLetter)
+-   [UUIdV4](#UUIdV4)

 <div STYLE="page-break-after: always;"></div>

 ## Documentation

-
 ### <span id="RandBytes">RandBytes</span>
+
 <p>Generate random byte slice.</p>

 <b>Signature:</b>
@@ -38,6 +44,7 @@ import (
 ```go
 func RandBytes(length int) []byte
 ```
+
 <b>Example:</b>

 ```go
@@ -45,17 +52,17 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/random"
+    "github.com/duke-git/lancet/random"
 )

 func main() {
-	randBytes := random.RandBytes(4)
-	fmt.Println(randBytes)
+    randBytes := random.RandBytes(4)
+    fmt.Println(randBytes)
 }
 ```

-
 ### <span id="RandInt">RandInt</span>
+
 <p>Generate random int between min and max, may contain min, not max.</p>

 <b>Signature:</b>
@@ -63,6 +70,7 @@ func main() {
 ```go
 func RandInt(min, max int) int
 ```
+
 <b>Example:</b>

 ```go
@@ -70,25 +78,25 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/random"
+    "github.com/duke-git/lancet/random"
 )

 func main() {
-	rInt := random.RandInt(1, 10)
-	fmt.Println(rInt)
+    rInt := random.RandInt(1, 10)
+    fmt.Println(rInt)
 }
 ```

+### <span id="RandString">RandString</span>

-
-### <span id="RandString">RandInt</span>
-<p>Generate random given length string.</p>
+<p>Generate random given length string. only contains letter (a-zA-Z)</p>

 <b>Signature:</b>

 ```go
 func RandString(length int) string
 ```
+
 <b>Example:</b>

 ```go
@@ -96,19 +104,121 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/random"
+    "github.com/duke-git/lancet/random"
 )

 func main() {
-	randStr := random.RandString(6)
-	fmt.Println(randStr)
+    randStr := random.RandString(6)
+    fmt.Println(randStr) //pGWsze
 }
 ```

+### <span id="RandUpper">RandUpper</span>

+<p>Generate a random upper case string</p>

+<b>Signature:</b>
+
+```go
+func RandUpper(length int) string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    randStr := random.RandString(6)
+    fmt.Println(randStr) //PACWGF
+}
+```
+
+### <span id="RandLower">RandLower</span>
+
+<p>Generate a random lower case string</p>
+
+<b>Signature:</b>
+
+```go
+func RandLower(length int) string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    randStr := random.RandLower(6)
+    fmt.Println(randStr) //siqbew
+}
+```
+
+### <span id="RandNumeral">RandNumeral</span>
+
+<p>Generate a random numeral string</p>
+
+<b>Signature:</b>
+
+```go
+func RandNumeral(length int) string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    randStr := random.RandNumeral(6)
+    fmt.Println(randStr) //035172
+}
+```
+
+### <span id="RandNumeralOrLetter">RandNumeralOrLetter</span>
+
+<p>generate a random numeral or letter string</p>
+
+<b>Signature:</b>
+
+```go
+func RandNumeralOrLetter(length int) string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    randStr := random.RandNumeralOrLetter(6)
+    fmt.Println(randStr) //0aW7cQ
+}
+```

 ### <span id="UUIdV4">UUIdV4</span>
+
 <p>Generate a random UUID of version 4 according to RFC 4122.</p>

 <b>Signature:</b>
@@ -116,6 +226,7 @@ func main() {
 ```go
 func UUIdV4() (string, error)
 ```
+
 <b>Example:</b>

 ```go
@@ -123,16 +234,14 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/random"
+    "github.com/duke-git/lancet/random"
 )

 func main() {
-	uuid, err := random.UUIdV4()
+    uuid, err := random.UUIdV4()
    if err != nil {
        return
    }
-	fmt.Println(uuid)
+    fmt.Println(uuid)
 }
 ```
-
-
--- a/docs/random_zh-CN.md
+++ b/docs/random_zh-CN.md
@@ -1,37 +1,42 @@
 # Random
-random随机数生成器包，可以生成随机[]bytes, int, string。
+
+random 随机数生成器包，可以生成随机[]bytes, int, string。

 <div STYLE="page-break-after: always;"></div>

 ## 源码:

- [https://github.com/duke-git/lancet/blob/main/random/random.go](https://github.com/duke-git/lancet/blob/main/random/random.go)
-
+[https://github.com/duke-git/lancet/blob/v1/random/random.go](https://github.com/duke-git/lancet/blob/v1/random/random.go)

 <div STYLE="page-break-after: always;"></div>

 ## 用法:
+
 ```go
 import (
-    "github.com/duke-git/lancet/v2/random"
+    "github.com/duke-git/lancet/random"
 )
 ```

 <div STYLE="page-break-after: always;"></div>

 ## 目录
- [RandBytes](#RandBytes)
- [RandInt](#RandInt)
- [RandString](#RandString)
- [UUIdV4](#UUIdV4)

+-   [RandBytes](#RandBytes)
+-   [RandInt](#RandInt)
+-   [RandString](#RandString)
+-   [RandUpper](#RandUpper)
+-   [RandLower](#RandLower)
+-   [RandNumeral](#RandNumeral)
+-   [RandNumeralOrLetter](#RandNumeralOrLetter)
+-   [UUIdV4](#UUIdV4)

 <div STYLE="page-break-after: always;"></div>

 ## 文档

-
 ### <span id="RandBytes">RandBytes</span>
+
 <p>生成随机字节切片</p>

 <b>函数签名:</b>
@@ -39,6 +44,7 @@ import (
 ```go
 func RandBytes(length int) []byte
 ```
+
 <b>例子:</b>

 ```go
@@ -46,17 +52,17 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/random"
+    "github.com/duke-git/lancet/random"
 )

 func main() {
-	randBytes := random.RandBytes(4)
-	fmt.Println(randBytes)
+    randBytes := random.RandBytes(4)
+    fmt.Println(randBytes)
 }
 ```

-
 ### <span id="RandInt">RandInt</span>
+
 <p>生成随机int, 范围[min, max)</p>

 <b>函数签名:</b>
@@ -64,6 +70,7 @@ func main() {
 ```go
 func RandInt(min, max int) int
 ```
+
 <b>例子:</b>

 ```go
@@ -71,25 +78,25 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/random"
+    "github.com/duke-git/lancet/random"
 )

 func main() {
-	rInt := random.RandInt(1, 10)
-	fmt.Println(rInt)
+    rInt := random.RandInt(1, 10)
+    fmt.Println(rInt)
 }
 ```

+### <span id="RandString">RandString</span>

-
-### <span id="RandString">RandInt</span>
-<p>生成随机给定长度的随机字符串</p>
+<p>生成给定长度的随机字符串，只包含字母(a-zA-Z)</p>

 <b>函数签名:</b>

 ```go
 func RandString(length int) string
 ```
+
 <b>例子:</b>

 ```go
@@ -97,18 +104,121 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/random"
+    "github.com/duke-git/lancet/random"
 )

 func main() {
-	randStr := random.RandString(6)
-	fmt.Println(randStr)
+    randStr := random.RandString(6)
+    fmt.Println(randStr) //pGWsze
 }
 ```

+### <span id="RandUpper">RandUpper</span>

+<p>生成给定长度的随机大写字母字符串</p>
+
+<b>函数签名:</b>
+
+```go
+func RandUpper(length int) string
+```
+
+<b>例子:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    randStr := random.RandString(6)
+    fmt.Println(randStr) //PACWGF
+}
+```
+
+### <span id="RandLower">RandLower</span>
+
+<p>生成给定长度的随机小写字母字符串</p>
+
+<b>函数签名:</b>
+
+```go
+func RandLower(length int) string
+```
+
+<b>例子:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    randStr := random.RandLower(6)
+    fmt.Println(randStr) //siqbew
+}
+```
+
+### <span id="RandNumeral">RandNumeral</span>
+
+<p>生成给定长度的随机数字字符串</p>
+
+<b>函数签名:</b>
+
+```go
+func RandNumeral(length int) string
+```
+
+<b>例子:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    randStr := random.RandNumeral(6)
+    fmt.Println(randStr) //035172
+}
+```
+
+### <span id="RandNumeralOrLetter">RandNumeralOrLetter</span>
+
+<p>生成给定长度的随机字符串（数字+字母)</p>
+
+<b>函数签名:</b>
+
+```go
+func RandNumeralOrLetter(length int) string
+```
+
+<b>例子:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    randStr := random.RandNumeralOrLetter(6)
+    fmt.Println(randStr) //0aW7cQ
+}
+```

 ### <span id="UUIdV4">UUIdV4</span>
+
 <p>生成UUID v4字符串</p>

 <b>函数签名:</b>
@@ -116,6 +226,7 @@ func main() {
 ```go
 func UUIdV4() (string, error)
 ```
+
 <b>例子:</b>

 ```go
@@ -123,16 +234,14 @@ package main

 import (
    "fmt"
-    "github.com/duke-git/lancet/v2/random"
+    "github.com/duke-git/lancet/random"
 )

 func main() {
-	uuid, err := random.UUIdV4()
+    uuid, err := random.UUIdV4()
    if err != nil {
        return
    }
-	fmt.Println(uuid)
+    fmt.Println(uuid)
 }
 ```
-
-
--- a/docs/retry.md
+++ b/docs/retry.md
@@ -1,37 +1,39 @@
 # Retry
+
 Package retry is for executing a function repeatedly until it was successful or canceled by the context.

 <div STYLE="page-break-after: always;"></div>

 ## Source:

- [https://github.com/duke-git/lancet/blob/main/retry/retry.go](https://github.com/duke-git/lancet/blob/main/retry/retry.go)
-
+[https://github.com/duke-git/lancet/blob/v1/retry/retry.go](https://github.com/duke-git/lancet/blob/v1/retry/retry.go)

 <div STYLE="page-break-after: always;"></div>

 ## Usage:
+
 ```go
 import (
-    "github.com/duke-git/lancet/v2/retry"
+    "github.com/duke-git/lancet/retry"
 )
 ```

 <div STYLE="page-break-after: always;"></div>

 ## Index
- [Context](#Context)
- [Retry](#Retry)
- [RetryFunc](#RetryFunc)
- [RetryDuration](#RetryDuration)
- [RetryTimes](#RetryTimes)
+
+-   [Context](#Context)
+-   [Retry](#Retry)
+-   [RetryFunc](#RetryFunc)
+-   [RetryDuration](#RetryDuration)
+-   [RetryTimes](#RetryTimes)

 <div STYLE="page-break-after: always;"></div>

 ## Documentation

-
 ### <span id="Context">Context</span>
+
 <p>Set retry context config, can cancel the retry with context.</p>

 <b>Signature:</b>
@@ -39,43 +41,42 @@ import (
 ```go
 func Context(ctx context.Context)
 ```
+
 <b>Example:</b>

 ```go
 import (
-	"context"
-	"errors"
-	"fmt"
-	"github.com/duke-git/lancet/v2/retry"
-	"time"
+    "context"
+    "errors"
+    "fmt"
+    "github.com/duke-git/lancet/retry"
+    "time"
 )

 func main() {
-	ctx, cancel := context.WithCancel(context.TODO())
-	var number int
-	increaseNumber := func() error {
-		number++
-		if number > 3 {
-			cancel()
-		}
-		return errors.New("error occurs")
-	}
+    ctx, cancel := context.WithCancel(context.TODO())
+    var number int
+    increaseNumber := func() error {
+        number++
+        if number > 3 {
+            cancel()
+        }
+        return errors.New("error occurs")
+    }

-	err := retry.Retry(increaseNumber,
-		retry.RetryDuration(time.Microsecond*50),
-		retry.Context(ctx),
-	)
+    err := retry.Retry(increaseNumber,
+        retry.RetryDuration(time.Microsecond*50),
+        retry.Context(ctx),
+    )

-	if err != nil {
-		fmt.Println(err) //retry is cancelled
-	}
+    if err != nil {
+        fmt.Println(err) //retry is cancelled
+    }
 }
 ```

-
-
-
 ### <span id="RetryFunc">RetryFunc</span>
+
 <p>Function that retry executes.</p>

 <b>Signature:</b>
@@ -83,6 +84,7 @@ func main() {
 ```go
 type RetryFunc func() error
 ```
+
 <b>Example:</b>

 ```go
@@ -92,32 +94,31 @@ import (
    "fmt"
    "errors"
    "log"
-    "github.com/duke-git/lancet/v2/retry"
+    "github.com/duke-git/lancet/retry"
 )

 func main() {
    var number int
    var increaseNumber retry.RetryFunc
-	increaseNumber = func() error {
-		number++
-		if number == 3 {
-			return nil
-		}
-		return errors.New("error occurs")
-	}
+    increaseNumber = func() error {
+        number++
+        if number == 3 {
+            return nil
+        }
+        return errors.New("error occurs")
+    }

-	err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
+    err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
    if err != nil {
-		log.Fatal(err)
-	}
+        log.Fatal(err)
+    }

    fmt.Println(number) //3
 }
 ```

-
-
 ### <span id="RetryTimes">RetryTimes</span>
+
 <p>Set times of retry. Default times is 5.</p>

 <b>Signature:</b>
@@ -125,6 +126,7 @@ func main() {
 ```go
 func RetryTimes(n uint)
 ```
+
 <b>Example:</b>

 ```go
@@ -134,29 +136,28 @@ import (
    "fmt"
    "errors"
    "log"
-    "github.com/duke-git/lancet/v2/retry"
+    "github.com/duke-git/lancet/retry"
 )

 func main() {
    var number int
-	increaseNumber := func() error {
-		number++
-		if number == 3 {
-			return nil
-		}
-		return errors.New("error occurs")
-	}
+    increaseNumber := func() error {
+        number++
+        if number == 3 {
+            return nil
+        }
+        return errors.New("error occurs")
+    }

-	err := retry.Retry(increaseNumber, retry.RetryTimes(2))
+    err := retry.Retry(increaseNumber, retry.RetryTimes(2))
    if err != nil {
-		log.Fatal(err) //2022/02/01 18:42:25 function main.main.func1 run failed after 2 times retry exit status 1
-	}
+        log.Fatal(err) //2022/02/01 18:42:25 function main.main.func1 run failed after 2 times retry exit status 1
+    }
 }
 ```

-
-
 ### <span id="RetryDuration">RetryDuration</span>
+
 <p>Set duration of retries. Default duration is 3 second.</p>

 <b>Signature:</b>
@@ -164,6 +165,7 @@ func main() {
 ```go
 func RetryDuration(d time.Duration)
 ```
+
 <b>Example:</b>

 ```go
@@ -173,30 +175,30 @@ import (
    "fmt"
    "errors"
    "log"
-    "github.com/duke-git/lancet/v2/retry"
+    "github.com/duke-git/lancet/retry"
 )

 func main() {
    var number int
-	increaseNumber := func() error {
-		number++
-		if number == 3 {
-			return nil
-		}
-		return errors.New("error occurs")
-	}
+    increaseNumber := func() error {
+        number++
+        if number == 3 {
+            return nil
+        }
+        return errors.New("error occurs")
+    }

-	err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
+    err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
    if err != nil {
-		log.Fatal(err)
-	}
+        log.Fatal(err)
+    }

    fmt.Println(number) //3
 }
 ```

-
 ### <span id="Retry">Retry</span>
+
 <p>Executes the retryFunc repeatedly until it was successful or canceled by the context.</p>

 <b>Signature:</b>
@@ -204,6 +206,7 @@ func main() {
 ```go
 func Retry(retryFunc RetryFunc, opts ...Option) error
 ```
+
 <b>Example:</b>

 ```go
@@ -213,23 +216,23 @@ import (
    "fmt"
    "errors"
    "log"
-    "github.com/duke-git/lancet/v2/retry"
+    "github.com/duke-git/lancet/retry"
 )

 func main() {
    var number int
-	increaseNumber := func() error {
-		number++
-		if number == 3 {
-			return nil
-		}
-		return errors.New("error occurs")
-	}
+    increaseNumber := func() error {
+        number++
+        if number == 3 {
+            return nil
+        }
+        return errors.New("error occurs")
+    }

-	err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
+    err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
    if err != nil {
-		log.Fatal(err)
-	}
+        log.Fatal(err)
+    }

    fmt.Println(number) //3
 }
--- a/docs/retry_zh-CN.md
+++ b/docs/retry_zh-CN.md
@@ -1,39 +1,39 @@
 # Retry
-retry重试执行函数直到函数运行成功或被context cancel。
+
+retry 重试执行函数直到函数运行成功或被 context cancel。

 <div STYLE="page-break-after: always;"></div>

 ## 源码:

- [https://github.com/duke-git/lancet/blob/main/retry/retry.go](https://github.com/duke-git/lancet/blob/main/retry/retry.go)
-
+[https://github.com/duke-git/lancet/blob/v1/retry/retry.go](https://github.com/duke-git/lancet/blob/v1/retry/retry.go)

 <div STYLE="page-break-after: always;"></div>

 ## 用法:
+
 ```go
 import (
-    "github.com/duke-git/lancet/v2/retry"
+    "github.com/duke-git/lancet/retry"
 )
 ```

 <div STYLE="page-break-after: always;"></div>

 ## 目录
- [Context](#Context)
- [Retry](#Retry)
- [RetryFunc](#RetryFunc)
- [RetryDuration](#RetryDuration)
- [RetryTimes](#RetryTimes)

+-   [Context](#Context)
+-   [Retry](#Retry)
+-   [RetryFunc](#RetryFunc)
+-   [RetryDuration](#RetryDuration)
+-   [RetryTimes](#RetryTimes)

 <div STYLE="page-break-after: always;"></div>

-
-## Document文档
-
+## Document 文档

 ### <span id="Context">Context</span>
+
 <p>设置重试context参数</p>

 <b>函数签名:</b>
@@ -41,43 +41,42 @@ import (
 ```go
 func Context(ctx context.Context)
 ```
+
 <b>例子:</b>

 ```go
 import (
-	"context"
-	"errors"
-	"fmt"
-	"lancet-demo/retry"
-	"time"
+    "context"
+    "errors"
+    "fmt"
+    "lancet-demo/retry"
+    "time"
 )

 func main() {
-	ctx, cancel := context.WithCancel(context.TODO())
-	var number int
-	increaseNumber := func() error {
-		number++
-		if number > 3 {
-			cancel()
-		}
-		return errors.New("error occurs")
-	}
+    ctx, cancel := context.WithCancel(context.TODO())
+    var number int
+    increaseNumber := func() error {
+        number++
+        if number > 3 {
+            cancel()
+        }
+        return errors.New("error occurs")
+    }

-	err := retry.Retry(increaseNumber,
-		retry.RetryDuration(time.Microsecond*50),
-		retry.Context(ctx),
-	)
+    err := retry.Retry(increaseNumber,
+        retry.RetryDuration(time.Microsecond*50),
+        retry.Context(ctx),
+    )

-	if err != nil {
-		fmt.Println(err) //retry is cancelled
-	}
+    if err != nil {
+        fmt.Println(err) //retry is cancelled
+    }
 }
 ```

-
-
-
 ### <span id="RetryFunc">RetryFunc</span>
+
 <p>被重试执行的函数</p>

 <b>函数签名:</b>
@@ -85,6 +84,7 @@ func main() {
 ```go
 type RetryFunc func() error
 ```
+
 <b>例子:</b>

 ```go
@@ -94,32 +94,31 @@ import (
    "fmt"
    "errors"
    "log"
-    "github.com/duke-git/lancet/v2/retry"
+    "github.com/duke-git/lancet/retry"
 )

 func main() {
    var number int
    var increaseNumber retry.RetryFunc
-	increaseNumber = func() error {
-		number++
-		if number == 3 {
-			return nil
-		}
-		return errors.New("error occurs")
-	}
+    increaseNumber = func() error {
+        number++
+        if number == 3 {
+            return nil
+        }
+        return errors.New("error occurs")
+    }

-	err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
+    err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
    if err != nil {
-		log.Fatal(err)
-	}
+        log.Fatal(err)
+    }

    fmt.Println(number) //3
 }
 ```

-
-
 ### <span id="RetryTimes">RetryTimes</span>
+
 <p>设置重试次数，默认5</p>

 <b>函数签名:</b>
@@ -127,6 +126,7 @@ func main() {
 ```go
 func RetryTimes(n uint)
 ```
+
 <b>例子:</b>

 ```go
@@ -136,29 +136,28 @@ import (
    "fmt"
    "errors"
    "log"
-    "github.com/duke-git/lancet/v2/retry"
+    "github.com/duke-git/lancet/retry"
 )

 func main() {
    var number int
-	increaseNumber := func() error {
-		number++
-		if number == 3 {
-			return nil
-		}
-		return errors.New("error occurs")
-	}
+    increaseNumber := func() error {
+        number++
+        if number == 3 {
+            return nil
+        }
+        return errors.New("error occurs")
+    }

-	err := retry.Retry(increaseNumber, retry.RetryTimes(2))
+    err := retry.Retry(increaseNumber, retry.RetryTimes(2))
    if err != nil {
-		log.Fatal(err) //2022/02/01 18:42:25 function main.main.func1 run failed after 2 times retry exit status 1
-	}
+        log.Fatal(err) //2022/02/01 18:42:25 function main.main.func1 run failed after 2 times retry exit status 1
+    }
 }
 ```

-
-
 ### <span id="RetryDuration">RetryDuration</span>
+
 <p>设置重试间隔时间，默认3秒</p>

 <b>函数签名:</b>
@@ -166,6 +165,7 @@ func main() {
 ```go
 func RetryDuration(d time.Duration)
 ```
+
 <b>例子:</b>

 ```go
@@ -175,30 +175,30 @@ import (
    "fmt"
    "errors"
    "log"
-    "github.com/duke-git/lancet/v2/retry"
+    "github.com/duke-git/lancet/retry"
 )

 func main() {
    var number int
-	increaseNumber := func() error {
-		number++
-		if number == 3 {
-			return nil
-		}
-		return errors.New("error occurs")
-	}
+    increaseNumber := func() error {
+        number++
+        if number == 3 {
+            return nil
+        }
+        return errors.New("error occurs")
+    }

-	err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
+    err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
    if err != nil {
-		log.Fatal(err)
-	}
+        log.Fatal(err)
+    }

    fmt.Println(number) //3
 }
 ```

-
 ### <span id="Retry">Retry</span>
+
 <p>重试执行函数retryFunc，直到函数运行成功，或被context停止</p>

 <b>函数签名:</b>
@@ -206,6 +206,7 @@ func main() {
 ```go
 func Retry(retryFunc RetryFunc, opts ...Option) error
 ```
+
 <b>例子:</b>

 ```go
@@ -215,23 +216,23 @@ import (
    "fmt"
    "errors"
    "log"
-    "github.com/duke-git/lancet/v2/retry"
+    "github.com/duke-git/lancet/retry"
 )

 func main() {
    var number int
-	increaseNumber := func() error {
-		number++
-		if number == 3 {
-			return nil
-		}
-		return errors.New("error occurs")
-	}
+    increaseNumber := func() error {
+        number++
+        if number == 3 {
+            return nil
+        }
+        return errors.New("error occurs")
+    }

-	err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
+    err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
    if err != nil {
-		log.Fatal(err)
-	}
+        log.Fatal(err)
+    }

    fmt.Println(number) //3
 }
--- a/docs/slice.md
+++ b/docs/slice.md
--- a/docs/slice_zh-CN.md
+++ b/docs/slice_zh-CN.md
--- a/docs/strutil.md
+++ b/docs/strutil.md
--- a/docs/strutil_zh-CN.md
+++ b/docs/strutil_zh-CN.md
--- a/docs/system.md
+++ b/docs/system.md
@@ -1,41 +1,43 @@
 # System
+
 Package system contains some functions about os, runtime, shell command.

 <div STYLE="page-break-after: always;"></div>

 ## Source:

- [https://github.com/duke-git/lancet/blob/main/system/os.go](https://github.com/duke-git/lancet/blob/main/system/os.go)
-
+[https://github.com/duke-git/lancet/blob/v1/system/os.go](https://github.com/duke-git/lancet/blob/v1/system/os.go)

 <div STYLE="page-break-after: always;"></div>

 ## Usage:
+
 ```go
 import (
-    "github.com/duke-git/lancet/v2/system"
+    "github.com/duke-git/lancet/system"
 )
 ```

 <div STYLE="page-break-after: always;"></div>

 ## Index
- [IsWindows](#IsWindows)
- [IsLinux](#IsLinux)
- [IsMac](#IsMac)
- [GetOsEnv](#GetOsEnv)
- [SetOsEnv](#SetOsEnv)
- [RemoveOsEnv](#RemoveOsEnv)
- [CompareOsEnv](#CompareOsEnv)
- [ExecCommand](#ExecCommand)
-  
+
+-   [IsWindows](#IsWindows)
+-   [IsLinux](#IsLinux)
+-   [IsMac](#IsMac)
+-   [GetOsEnv](#GetOsEnv)
+-   [SetOsEnv](#SetOsEnv)
+-   [RemoveOsEnv](#RemoveOsEnv)
+-   [CompareOsEnv](#CompareOsEnv)
+-   [ExecCommand](#ExecCommand)
+-   [GetOsBits](#GetOsBits)

 <div STYLE="page-break-after: always;"></div>

 ## Documentation

-
 ### <span id="IsWindows">IsWindows</span>
+
 <p>Check if current os is windows.</p>

 <b>Signature:</b>
@@ -43,24 +45,23 @@ import (
 ```go
 func IsWindows() bool
 ```
+
 <b>Example:</b>

 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )

 func main() {
-	isOsWindows := system.IsWindows()
-	fmt.Println(isOsWindows)
+    isOsWindows := system.IsWindows()
+    fmt.Println(isOsWindows)
 }
 ```

-
-
-
 ### <span id="IsLinux">IsLinux</span>
+
 <p>Check if current os is linux.</p>

 <b>Signature:</b>
@@ -68,23 +69,23 @@ func main() {
 ```go
 func IsLinux() bool
 ```
+
 <b>Example:</b>

 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )

 func main() {
-	isOsLinux := system.IsLinux()
-	fmt.Println(isOsLinux)
+    isOsLinux := system.IsLinux()
+    fmt.Println(isOsLinux)
 }
 ```

-
-
 ### <span id="IsMac">IsMac</span>
+
 <p>Check if current os is macos.</p>

 <b>Signature:</b>
@@ -92,23 +93,23 @@ func main() {
 ```go
 func IsMac() bool
 ```
+
 <b>Example:</b>

 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )

 func main() {
-	isOsMac := system.IsMac
-	fmt.Println(isOsMac)
+    isOsMac := system.IsMac
+    fmt.Println(isOsMac)
 }
 ```

-
-
 ### <span id="GetOsEnv">GetOsEnv</span>
+
 <p>Gets the value of the environment variable named by the key.</p>

 <b>Signature:</b>
@@ -116,23 +117,23 @@ func main() {
 ```go
 func GetOsEnv(key string) string
 ```
+
 <b>Example:</b>

 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )

 func main() {
-	fooEnv := system.GetOsEnv("foo")
-	fmt.Println(fooEnv)
+    fooEnv := system.GetOsEnv("foo")
+    fmt.Println(fooEnv)
 }
 ```

-
-
 ### <span id="SetOsEnv">SetOsEnv</span>
+
 <p>Sets the value of the environment variable named by the key.</p>

 <b>Signature:</b>
@@ -140,24 +141,23 @@ func main() {
 ```go
 func SetOsEnv(key, value string) error
 ```
+
 <b>Example:</b>

 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )

 func main() {
-	err := system.SetOsEnv("foo", "foo_value")
-	fmt.Println(err)
+    err := system.SetOsEnv("foo", "foo_value")
+    fmt.Println(err)
 }
 ```

-
-
-
 ### <span id="RemoveOsEnv">RemoveOsEnv</span>
+
 <p>Remove a single environment variable.</p>

 <b>Signature:</b>
@@ -165,25 +165,25 @@ func main() {
 ```go
 func RemoveOsEnv(key string) error
 ```
+
 <b>Example:</b>

 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )

 func main() {
-	err := system.RemoveOsEnv("foo")
-	if err != nil {
-		fmt.Println(err)
-	}
+    err := system.RemoveOsEnv("foo")
+    if err != nil {
+        fmt.Println(err)
+    }
 }
 ```

-
-
 ### <span id="CompareOsEnv">CompareOsEnv</span>
+
 <p>Get env named by the key and compare it with comparedEnv.</p>

 <b>Signature:</b>
@@ -191,52 +191,71 @@ func main() {
 ```go
 func CompareOsEnv(key, comparedEnv string) bool
 ```
+
 <b>Example:</b>

 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )

 func main() {
-	system.SetOsEnv("foo", "foo_value")
-	res := system.CompareOsEnv("foo", "foo_value")
-	fmt.Println(res) //true
+    system.SetOsEnv("foo", "foo_value")
+    res := system.CompareOsEnv("foo", "foo_value")
+    fmt.Println(res) //true
 }
 ```

+### <span id="ExecCommand">ExecCommand</span>

-
-
-### <span id="ExecCommand">CompareOsEnv</span>
 <p>use shell /bin/bash -c(linux) or cmd (windows) to execute command.</p>

 <b>Signature:</b>

 ```go
-func ExecCommand(command string) (stdout, stderr string, err error)
+type (
+	Option func(*exec.Cmd)
+)
+func ExecCommand(command string, opts ...Option) (stdout, stderr string, err error)
 ```
+
 <b>Example:</b>

 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )

 func main() {
-	out, errout, err := system.ExecCommand("ls")
-	fmt.Println(out)
-	fmt.Println(errout)
-	fmt.Println(err)
+    out, errout, err := system.ExecCommand("ls", system.WithForeground())
+    fmt.Println(out)
+    fmt.Println(errout)
+    fmt.Println(err)
 }
 ```

+### <span id="GetOsBits">GetOsBits</span>

+<p>获取当前操作系统位数，返回32或64</p>

+<b>函数签名:</b>

+```go
+func GetOsBits() int
+```

+<b>例子:</b>

+```go
+import (
+    "fmt"
+    "github.com/duke-git/lancet/system"
+)

-
+func main() {
+    osBit := system.GetOsBits()
+    fmt.Println(osBit)
+}
+```
--- a/docs/system_zh-CN.md
+++ b/docs/system_zh-CN.md
@@ -1,41 +1,43 @@
 # System
-system包含os, runtime, shell command相关函数。
+
+system 包含 os, runtime, shell command 相关函数。

 <div STYLE="page-break-after: always;"></div>

 ## 源码:

- [https://github.com/duke-git/lancet/blob/main/system/os.go](https://github.com/duke-git/lancet/blob/main/system/os.go)
-
+[https://github.com/duke-git/lancet/blob/v1/system/os.go](https://github.com/duke-git/lancet/blob/v1/system/os.go)

 <div STYLE="page-break-after: always;"></div>

 ## 用法:
+
 ```go
 import (
-    "github.com/duke-git/lancet/v2/system"
+    "github.com/duke-git/lancet/system"
 )
 ```

 <div STYLE="page-break-after: always;"></div>

 ## 目录
- [IsWindows](#IsWindows)
- [IsLinux](#IsLinux)
- [IsMac](#IsMac)
- [GetOsEnv](#GetOsEnv)
- [SetOsEnv](#SetOsEnv)
- [RemoveOsEnv](#RemoveOsEnv)
- [CompareOsEnv](#CompareOsEnv)
- [ExecCommand](#ExecCommand)
-  
+
+-   [IsWindows](#IsWindows)
+-   [IsLinux](#IsLinux)
+-   [IsMac](#IsMac)
+-   [GetOsEnv](#GetOsEnv)
+-   [SetOsEnv](#SetOsEnv)
+-   [RemoveOsEnv](#RemoveOsEnv)
+-   [CompareOsEnv](#CompareOsEnv)
+-   [ExecCommand](#ExecCommand)
+-   [GetOsBits](#GetOsBits)

 <div STYLE="page-break-after: always;"></div>

-## Documentation文档
-
+## Documentation 文档

 ### <span id="IsWindows">IsWindows</span>
+
 <p>检查当前操作系统是否是windows</p>

 <b>Signature:</b>
@@ -43,24 +45,23 @@ import (
 ```go
 func IsWindows() bool
 ```
+
 <b>Example:</b>

 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )

 func main() {
-	isOsWindows := system.IsWindows()
-	fmt.Println(isOsWindows)
+    isOsWindows := system.IsWindows()
+    fmt.Println(isOsWindows)
 }
 ```

-
-
-
 ### <span id="IsLinux">IsLinux</span>
+
 <p>检查当前操作系统是否是linux</p>

 <b>Signature:</b>
@@ -68,23 +69,23 @@ func main() {
 ```go
 func IsLinux() bool
 ```
+
 <b>Example:</b>

 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )

 func main() {
-	isOsLinux := system.IsLinux()
-	fmt.Println(isOsLinux)
+    isOsLinux := system.IsLinux()
+    fmt.Println(isOsLinux)
 }
 ```

-
-
 ### <span id="IsMac">IsMac</span>
+
 <p>检查当前操作系统是否是macos</p>

 <b>Signature:</b>
@@ -92,23 +93,23 @@ func main() {
 ```go
 func IsMac() bool
 ```
+
 <b>Example:</b>

 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )

 func main() {
-	isOsMac := system.IsMac
-	fmt.Println(isOsMac)
+    isOsMac := system.IsMac
+    fmt.Println(isOsMac)
 }
 ```

-
-
 ### <span id="GetOsEnv">GetOsEnv</span>
+
 <p>获取key命名的环境变量的值</p>

 <b>Signature:</b>
@@ -116,23 +117,23 @@ func main() {
 ```go
 func GetOsEnv(key string) string
 ```
+
 <b>Example:</b>

 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )

 func main() {
-	fooEnv := system.GetOsEnv("foo")
-	fmt.Println(fooEnv)
+    fooEnv := system.GetOsEnv("foo")
+    fmt.Println(fooEnv)
 }
 ```

-
-
 ### <span id="SetOsEnv">SetOsEnv</span>
+
 <p>设置由key命名的环境变量的值</p>

 <b>Signature:</b>
@@ -140,24 +141,23 @@ func main() {
 ```go
 func SetOsEnv(key, value string) error
 ```
+
 <b>Example:</b>

 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )

 func main() {
-	err := system.SetOsEnv("foo", "foo_value")
-	fmt.Println(err)
+    err := system.SetOsEnv("foo", "foo_value")
+    fmt.Println(err)
 }
 ```

-
-
-
 ### <span id="RemoveOsEnv">RemoveOsEnv</span>
+
 <p>删除单个环境变量</p>

 <b>Signature:</b>
@@ -165,25 +165,25 @@ func main() {
 ```go
 func RemoveOsEnv(key string) error
 ```
+
 <b>Example:</b>

 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )

 func main() {
-	err := system.RemoveOsEnv("foo")
-	if err != nil {
-		fmt.Println(err)
-	}
+    err := system.RemoveOsEnv("foo")
+    if err != nil {
+        fmt.Println(err)
+    }
 }
 ```

-
-
 ### <span id="CompareOsEnv">CompareOsEnv</span>
+
 <p>获取key命名的环境变量值并与compareEnv进行比较</p>

 <b>Signature:</b>
@@ -191,52 +191,71 @@ func main() {
 ```go
 func CompareOsEnv(key, comparedEnv string) bool
 ```
+
 <b>Example:</b>

 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )

 func main() {
-	system.SetOsEnv("foo", "foo_value")
-	res := system.CompareOsEnv("foo", "foo_value")
-	fmt.Println(res) //true
+    system.SetOsEnv("foo", "foo_value")
+    res := system.CompareOsEnv("foo", "foo_value")
+    fmt.Println(res) //true
 }
 ```

+### <span id="ExecCommand">ExecCommand</span>

-
-
-### <span id="ExecCommand">CompareOsEnv</span>
 <p>使用shell /bin/bash -c(linux) 或 cmd (windows) 执行shell命令</p>

 <b>Signature:</b>

 ```go
-func ExecCommand(command string) (stdout, stderr string, err error)
+type (
+	Option func(*exec.Cmd)
+)
+func ExecCommand(command string, opts ...Option) (stdout, stderr string, err error)
 ```
+
 <b>Example:</b>

 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )

 func main() {
-	out, errout, err := system.ExecCommand("ls")
-	fmt.Println(out)
-	fmt.Println(errout)
-	fmt.Println(err)
+    out, errout, err := system.ExecCommand("ls", system.WithForeground())
+    fmt.Println(out)
+    fmt.Println(errout)
+    fmt.Println(err)
 }
 ```

+### <span id="GetOsBits">GetOsBits</span>

+<p>Get current os bits, 32bit or 64bit. return 32 or 64</p>

+<b>Signature:</b>

+```go
+func GetOsBits() int
+```

+<b>Example:</b>

+```go
+import (
+    "fmt"
+    "github.com/duke-git/lancet/system"
+)

-
+func main() {
+    osBit := system.GetOsBits()
+    fmt.Println(osBit)
+}
+```
--- a/docs/validator.md
+++ b/docs/validator.md
--- a/docs/validator_zh-CN.md
+++ b/docs/validator_zh-CN.md
--- a/docs/xerror.md
+++ b/docs/xerror.md
@@ -1,57 +0,0 @@
-# Xerror
-Package xerror implements helpers for errors.
-
-<div STYLE="page-break-after: always;"></div>
-
-## Source:
-
- [https://github.com/duke-git/lancet/blob/main/xerror/xerror.go](https://github.com/duke-git/lancet/blob/main/xerror/xerror.go)
-
-<div STYLE="page-break-after: always;"></div>
-
-## Usage:
-```go
-import (
-    "github.com/duke-git/lancet/v2/xerror"
-)
-```
-
-<div STYLE="page-break-after: always;"></div>
-
-## Index
- [Unwrap](#Unwrap)
-
-<div STYLE="page-break-after: always;"></div>
-
-## Documentation
-
-
-
-### <span id="Unwrap">Unwrap</span>
-<p>Unwrap if err is nil then it returns a valid value. If err is not nil, Unwrap panics with err.</p>
-
-<b>Signature:</b>
-
-```go
-func Unwrap[T any](val T, err error) T
-```
-<b>Example:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/xerror"
-)
-
-func main() {
-    _, err := strconv.Atoi("4o2")
-	defer func() {
-		v := recover()
-		fmt.Println(err.Error()) // err.Error() == v.(*strconv.NumError).Error()
-	}()
-
-	xerror.Unwrap(strconv.Atoi("4o2"))
-}
-```
--- a/docs/xerror_zh-CN.md
+++ b/docs/xerror_zh-CN.md
@@ -1,57 +0,0 @@
-# Xerror
-xerror错误处理逻辑封装
-
-<div STYLE="page-break-after: always;"></div>
-
-## 源码:
-
- [https://github.com/duke-git/lancet/blob/main/xerror/xerror.go](https://github.com/duke-git/lancet/blob/main/xerror/xerror.go)
-
-<div STYLE="page-break-after: always;"></div>
-
-## 用法:
-```go
-import (
-    "github.com/duke-git/lancet/v2/xerror"
-)
-```
-
-<div STYLE="page-break-after: always;"></div>
-
-## 目录
- [Unwrap](#Unwrap)
-
-<div STYLE="page-break-after: always;"></div>
-
-## 文档
-
-
-
-### <span id="Unwrap">Unwrap</span>
-<p>如果err为nil则展开，则它返回一个有效值。 如果err不是nil则Unwrap使用err发生恐慌。</p>
-
-<b>函数签名:</b>
-
-```go
-func Unwrap[T any](val T, err error) T
-```
-<b>例子:</b>
-
-```go
-package main
-
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/xerror"
-)
-
-func main() {
-    _, err := strconv.Atoi("4o2")
-	defer func() {
-		v := recover()
-		fmt.Println(err.Error()) // err.Error() == v.(*strconv.NumError).Error()
-	}()
-
-	xerror.Unwrap(strconv.Atoi("4o2"))
-}
-```
--- a/fileutil/file.go
+++ b/fileutil/file.go
@@ -7,13 +7,21 @@ package fileutil
 import (
 	"archive/zip"
 	"bufio"
+	"bytes"
+	"crypto/sha1"
+	"crypto/sha256"
+	"crypto/sha512"
+	"encoding/csv"
 	"errors"
+	"fmt"
 	"io"
 	"io/fs"
 	"io/ioutil"
 	"net/http"
 	"os"
+	"path"
 	"path/filepath"
+	"runtime"
 	"strings"
 )

@@ -40,6 +48,11 @@ func CreateFile(path string) bool {
 	return true
 }

+// CreateDir create directory in absolute path. param `absPath` like /a/, /a/b/
+func CreateDir(absPath string) error {
+	return os.MkdirAll(path.Dir(absPath), os.ModePerm)
+}
+
 // IsDir checks if the path is directory or not
 func IsDir(path string) bool {
 	file, err := os.Stat(path)
@@ -81,7 +94,7 @@ func CopyFile(srcFilePath string, dstFilePath string) error {
 	}
 }

-//ClearFile write empty string to path file
+// ClearFile write empty string to path file
 func ClearFile(path string) error {
 	f, err := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
 	if err != nil {
@@ -93,7 +106,7 @@ func ClearFile(path string) error {
 	return err
 }

-//ReadFileToString return string of file content
+// ReadFileToString return string of file content
 func ReadFileToString(path string) (string, error) {
 	bytes, err := ioutil.ReadFile(path)
 	if err != nil {
@@ -214,7 +227,11 @@ func UnZip(zipFile string, destPath string) error {
 	defer zipReader.Close()

 	for _, f := range zipReader.File {
-		path := filepath.Join(destPath, f.Name)
+		//issue#62: fix ZipSlip bug
+		path, err := safeFilepathJoin(destPath, f.Name)
+		if err != nil {
+			return err
+		}
 		if f.FileInfo().IsDir() {
 			os.MkdirAll(path, os.ModePerm)
 		} else {
@@ -243,6 +260,17 @@ func UnZip(zipFile string, destPath string) error {
 	return nil
 }

+func safeFilepathJoin(path1, path2 string) (string, error) {
+	relPath, err := filepath.Rel(".", path2)
+	if err != nil || strings.HasPrefix(relPath, "..") {
+		return "", fmt.Errorf("(zipslip) filepath is unsafe %q: %v", path2, err)
+	}
+	if path1 == "" {
+		path1 = "."
+	}
+	return filepath.Join(path1, filepath.Join("/", relPath)), nil
+}
+
 // IsLink checks if a file is symbol link or not
 func IsLink(path string) bool {
 	fi, err := os.Lstat(path)
@@ -263,7 +291,7 @@ func FileMode(path string) (fs.FileMode, error) {

 // MiMeType return file mime type
 // param `file` should be string(file path) or *os.File
-func MiMeType(file any) string {
+func MiMeType(file interface{}) string {
 	var mediatype string

 	readBuffer := func(f *os.File) ([]byte, error) {
@@ -296,3 +324,128 @@ func MiMeType(file any) string {
 	}
 	return mediatype
 }
+
+// CurrentPath return current absolute path.
+func CurrentPath() string {
+	var absPath string
+	_, filename, _, ok := runtime.Caller(1)
+	if ok {
+		absPath = path.Dir(filename)
+	}
+
+	return absPath
+}
+
+// IsZipFile checks if file is zip or not.
+func IsZipFile(filepath string) bool {
+	f, err := os.Open(filepath)
+	if err != nil {
+		return false
+	}
+	defer f.Close()
+
+	buf := make([]byte, 4)
+	if n, err := f.Read(buf); err != nil || n < 4 {
+		return false
+	}
+
+	return bytes.Equal(buf, []byte("PK\x03\x04"))
+}
+
+// FileSize returns file size in bytes.
+func FileSize(path string) (int64, error) {
+	f, err := os.Stat(path)
+	if err != nil {
+		return 0, err
+	}
+	return f.Size(), nil
+}
+
+// MTime returns file modified time.
+func MTime(filepath string) (int64, error) {
+	f, err := os.Stat(filepath)
+	if err != nil {
+		return 0, err
+	}
+	return f.ModTime().Unix(), nil
+}
+
+// MTime returns file sha value, param `shaType` should be 1, 256 or 512.
+func Sha(filepath string, shaType ...int) (string, error) {
+	file, err := os.Open(filepath)
+	if err != nil {
+		return "", err
+	}
+	defer file.Close()
+
+	h := sha1.New()
+	if len(shaType) > 0 {
+		if shaType[0] == 1 {
+			h = sha1.New()
+		} else if shaType[0] == 256 {
+			h = sha256.New()
+		} else if shaType[0] == 512 {
+			h = sha512.New()
+		} else {
+			return "", errors.New("param `shaType` should be 1, 256 or 512.")
+		}
+	}
+
+	_, err = io.Copy(h, file)
+
+	if err != nil {
+		return "", err
+	}
+
+	sha := fmt.Sprintf("%x", h.Sum(nil))
+
+	return sha, nil
+
+}
+
+// ReadCsvFile read file content into slice.
+func ReadCsvFile(filepath string) ([][]string, error) {
+	f, err := os.Open(filepath)
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	csvReader := csv.NewReader(f)
+	records, err := csvReader.ReadAll()
+	if err != nil {
+		return nil, err
+	}
+
+	return records, nil
+}
+
+// WriteStringToFile write string to target file.
+func WriteStringToFile(filepath string, content string, append bool) error {
+	flag := os.O_RDWR | os.O_CREATE
+	if append {
+		flag = flag | os.O_APPEND
+	}
+
+	f, err := os.OpenFile(filepath, flag, 0644)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	_, err = f.WriteString(content)
+	return err
+}
+
+// WriteBytesToFile write bytes to target file.
+func WriteBytesToFile(filepath string, content []byte) error {
+	f, err := os.OpenFile(filepath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
+	if err != nil {
+		return err
+	}
+
+	defer f.Close()
+
+	_, err = f.Write(content)
+	return err
+}
--- a/fileutil/file_test.go
+++ b/fileutil/file_test.go
@@ -4,7 +4,7 @@ import (
 	"os"
 	"testing"

-	"github.com/duke-git/lancet/v2/internal"
+	"github.com/duke-git/lancet/internal"
 )

 func TestIsExist(t *testing.T) {
@@ -33,6 +33,27 @@ func TestCreateFile(t *testing.T) {
 	os.Remove(f)
 }

+func TestCreateDir(t *testing.T) {
+	assert := internal.NewAssert(t, "TestCreateDir")
+
+	pwd, err := os.Getwd()
+	if err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+
+	dirPath := pwd + "/a/"
+	err = CreateDir(dirPath)
+	if err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+
+	assert.Equal(true, IsExist(dirPath))
+	os.Remove(dirPath)
+	assert.Equal(false, IsExist(dirPath))
+}
+
 func TestIsDir(t *testing.T) {
 	assert := internal.NewAssert(t, "TestIsDir")

@@ -76,10 +97,10 @@ func TestCopyFile(t *testing.T) {
 func TestListFileNames(t *testing.T) {
 	assert := internal.NewAssert(t, "TestListFileNames")

-	filesInPath, err := ListFileNames("./")
+	filesInPath, err := ListFileNames("../datetime/")
 	assert.IsNil(err)

-	expected := []string{"file.go", "file_test.go"}
+	expected := []string{"conversion.go", "conversion_test.go", "datetime.go", "datetime_test.go"}
 	assert.Equal(expected, filesInPath)
 }

@@ -200,3 +221,124 @@ func TestMiMeType(t *testing.T) {
 	assert.Equal("text/plain; charset=utf-8", MiMeType(f))
 	assert.Equal("text/plain; charset=utf-8", MiMeType("./file.go"))
 }
+
+func TestCurrentPath(t *testing.T) {
+	absPath := CurrentPath()
+	t.Log(absPath)
+}
+
+func TestIsZipFile(t *testing.T) {
+	assert := internal.NewAssert(t, "TestIsZipFile")
+
+	assert.Equal(false, IsZipFile("./file.go"))
+	assert.Equal(true, IsZipFile("./testdata/file.go.zip"))
+}
+
+func TestFileSize(t *testing.T) {
+	assert := internal.NewAssert(t, "TestFileSize")
+
+	size, err := FileSize("./testdata/test.txt")
+
+	assert.IsNil(err)
+	assert.Equal(int64(20), size)
+}
+
+func TestMTime(t *testing.T) {
+	// assert := internal.NewAssert(t, "TestMTime")
+
+	// mtime, err := MTime("./testdata/test.txt")
+
+	// assert.IsNil(err)
+	// assert.Equal(int64(1682478195), mtime)
+}
+
+func TestSha(t *testing.T) {
+	assert := internal.NewAssert(t, "TestSha")
+
+	sha1, err := Sha("./testdata/test.txt", 1)
+	sha256, err := Sha("./testdata/test.txt", 256)
+	sha512, err := Sha("./testdata/test.txt", 512)
+
+	assert.IsNil(err)
+	assert.Equal("dda3cf10c5a6ff6c6659a497bf7261b287af2bc7", sha1)
+	assert.Equal("aa6d0a3fbc3442c228d606da09e0c1dc98c69a1cac3da1909199e0266171df35", sha256)
+	assert.Equal("d22aba2a1b7a2e2f512756255cc1c3708905646920cb1eb95e45b531ba74774dbbb89baebf1f716220eb9cf4908f1cfc5b2a01267704d9a59f59d77cab609870", sha512)
+}
+
+func TestReadCsvFile(t *testing.T) {
+	assert := internal.NewAssert(t, "TestReadCsvFile")
+
+	content, err := ReadCsvFile("./testdata/test.csv")
+	t.Log(content)
+
+	assert.IsNil(err)
+
+	assert.Equal(3, len(content))
+	assert.Equal(3, len(content[0]))
+	assert.Equal("Bob", content[0][0])
+}
+
+func TestWriteStringToFile(t *testing.T) {
+	assert := internal.NewAssert(t, "TestWriteStringToFile")
+
+	filepath := "./test.txt"
+
+	file, err := os.Create(filepath)
+	if err != nil {
+		t.Fail()
+	}
+
+	defer file.Close()
+
+	err = WriteStringToFile(filepath, "hello", false)
+	if err != nil {
+		t.Fail()
+	}
+
+	content1, err := ReadFileToString(filepath)
+	if err != nil {
+		t.Fail()
+	}
+
+	err = WriteStringToFile(filepath, " world", true)
+	if err != nil {
+		t.Fail()
+	}
+
+	content2, err := os.ReadFile(filepath)
+	if err != nil {
+		t.Fail()
+	}
+
+	assert.Equal("hello", content1)
+	assert.Equal("hello world", string(content2))
+
+	os.Remove(filepath)
+}
+
+func TestWriteBytesToFile(t *testing.T) {
+	assert := internal.NewAssert(t, "TestWriteBytesToFile")
+
+	filepath := "./bytes.txt"
+
+	file, err := os.Create(filepath)
+	if err != nil {
+		t.Fail()
+	}
+
+	defer file.Close()
+
+	err = WriteBytesToFile(filepath, []byte("hello"))
+	if err != nil {
+		t.Fail()
+	}
+
+	content, err := os.ReadFile(filepath)
+	if err != nil {
+		t.Fail()
+	}
+
+	assert.Equal("hello", string(content))
+
+	os.Remove(filepath)
+}
--- a/fileutil/testdata/file.go.zip
+++ b/fileutil/testdata/file.go.zip
--- a/fileutil/testdata/test.csv
+++ b/fileutil/testdata/test.csv
@@ -0,0 +1,3 @@
+Bob, 12, male
+Duke, 14, male
+Lucy, 16, female
--- a/fileutil/testdata/test.txt
+++ b/fileutil/testdata/test.txt
@@ -0,0 +1 @@
+this is a test file.
--- a/formatter/formatter.go
+++ b/formatter/formatter.go
@@ -4,14 +4,176 @@
 // Package formatter implements some functions to format string, struct.
 package formatter

-import "strings"
+import (
+	"encoding/json"
+	"fmt"
+	"io"

-// Comma add comma to number by every 3 numbers from right. ahead by symbol char
-func Comma(v any, symbol string) string {
-	s := numString(v)
-	dotIndex := strings.Index(s, ".")
-	if dotIndex != -1 {
-		return symbol + commaString(s[:dotIndex]) + s[dotIndex:]
+	"github.com/duke-git/lancet/convertor"
+	"github.com/duke-git/lancet/strutil"
+	"github.com/duke-git/lancet/validator"
+)
+
+// Comma add comma to a number value by every 3 numbers from right. ahead by symbol char.
+// if value is invalid number string eg "aa", return empty string
+// Comma("12345", "$") => "$12,345", Comma(12345, "$") => "$12,345"
+func Comma(value interface{}, symbol string) string {
+	if validator.IsInt(value) {
+		v, err := convertor.ToInt(value)
+		if err != nil {
+			return ""
+		}
+		return symbol + commaInt(v)
 	}
-	return symbol + commaString(s)
+
+	if validator.IsFloat(value) {
+		v, err := convertor.ToFloat(value)
+		if err != nil {
+			return ""
+		}
+		return symbol + commaFloat(v)
+	}
+
+	if strutil.IsString(value) {
+		v := fmt.Sprintf("%v", value)
+		if validator.IsNumberStr(v) {
+			return symbol + commaStr(v)
+		}
+		return ""
+	}
+
+	return ""
+}
+
+// Pretty data to JSON string.
+func Pretty(v interface{}) (string, error) {
+	out, err := json.MarshalIndent(v, "", "    ")
+	return string(out), err
+}
+
+// PrettyToWriter pretty encode data to writer.
+func PrettyToWriter(v interface{}, out io.Writer) error {
+	enc := json.NewEncoder(out)
+	enc.SetIndent("", "    ")
+
+	if err := enc.Encode(v); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// http://en.wikipedia.org/wiki/Binary_prefix
+const (
+	// Decimal
+	UnitB  = 1
+	UnitKB = 1000
+	UnitMB = 1000 * UnitKB
+	UnitGB = 1000 * UnitMB
+	UnitTB = 1000 * UnitGB
+	UnitPB = 1000 * UnitTB
+	UnitEB = 1000 * UnitPB
+
+	// Binary
+	UnitBiB = 1
+	UnitKiB = 1024
+	UnitMiB = 1024 * UnitKiB
+	UnitGiB = 1024 * UnitMiB
+	UnitTiB = 1024 * UnitGiB
+	UnitPiB = 1024 * UnitTiB
+	UnitEiB = 1024 * UnitPiB
+)
+
+// type byteUnitMap map[byte]int64
+
+var (
+	decimalByteMap = map[string]uint64{
+		"b":  UnitB,
+		"kb": UnitKB,
+		"mb": UnitMB,
+		"gb": UnitGB,
+		"tb": UnitTB,
+		"pb": UnitPB,
+		"eb": UnitEB,
+
+		// Without suffix
+		"":  UnitB,
+		"k": UnitKB,
+		"m": UnitMB,
+		"g": UnitGB,
+		"t": UnitTB,
+		"p": UnitPB,
+		"e": UnitEB,
+	}
+
+	binaryByteMap = map[string]uint64{
+		"bi":  UnitBiB,
+		"kib": UnitKiB,
+		"mib": UnitMiB,
+		"gib": UnitGiB,
+		"tib": UnitTiB,
+		"pib": UnitPiB,
+		"eib": UnitEiB,
+
+		// Without suffix
+		"":   UnitBiB,
+		"ki": UnitKiB,
+		"mi": UnitMiB,
+		"gi": UnitGiB,
+		"ti": UnitTiB,
+		"pi": UnitPiB,
+		"ei": UnitEiB,
+	}
+)
+
+var (
+	decimalByteUnits = []string{"B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"}
+	binaryByteUnits  = []string{"B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB"}
+)
+
+// DecimalBytes returns a human readable byte size under decimal standard (base 1000)
+// The precision parameter specifies the number of digits after the decimal point, which defaults to 4.
+// Play: https://go.dev/play/p/FPXs1suwRcs
+func DecimalBytes(size float64, precision ...int) string {
+	p := 5
+	if len(precision) > 0 {
+		p = precision[0] + 1
+	}
+	size, unit := calculateByteSize(size, 1000.0, decimalByteUnits)
+
+	return fmt.Sprintf("%.*g%s", p, size, unit)
+}
+
+// BinaryBytes returns a human-readable byte size under binary standard (base 1024)
+// The precision parameter specifies the number of digits after the decimal point, which defaults to 4.
+func BinaryBytes(size float64, precision ...int) string {
+	p := 5
+	if len(precision) > 0 {
+		p = precision[0] + 1
+	}
+	size, unit := calculateByteSize(size, 1024.0, binaryByteUnits)
+
+	return fmt.Sprintf("%.*g%s", p, size, unit)
+}
+
+func calculateByteSize(size float64, base float64, byteUnits []string) (float64, string) {
+	i := 0
+	unitsLimit := len(byteUnits) - 1
+	for size >= base && i < unitsLimit {
+		size = size / base
+		i++
+	}
+	return size, byteUnits[i]
+}
+
+// ParseDecimalBytes return the human readable bytes size string into the amount it represents(base 1000).
+// ParseDecimalBytes("42 MB") -> 42000000, nil
+func ParseDecimalBytes(size string) (uint64, error) {
+	return parseBytes(size, "decimal")
+}
+
+// ParseBinaryBytes return the human readable bytes size string into the amount it represents(base 1024).
+// ParseBinaryBytes("42 mib") -> 44040192, nil
+func ParseBinaryBytes(size string) (uint64, error) {
+	return parseBytes(size, "binary")
 }
--- a/formatter/formatter_internal.go
+++ b/formatter/formatter_internal.go
@@ -1,40 +1,134 @@
 package formatter

 import (
+	"bytes"
 	"fmt"
-	"reflect"
+	"math"
 	"strconv"
 	"strings"
+	"unicode"
 )

-func commaString(s string) string {
+// see https://github.com/dustin/go-humanize/blob/master/comma.go
+func commaInt(v int64) string {
+	sign := ""
+
+	// Min int64 can't be negated to a usable value, so it has to be special cased.
+	if v == math.MinInt64 {
+		return "-9,223,372,036,854,775,808"
+	}
+
+	if v < 0 {
+		sign = "-"
+		v = 0 - v
+	}
+
+	parts := []string{"", "", "", "", "", "", ""}
+	j := len(parts) - 1
+
+	for v > 999 {
+		parts[j] = strconv.FormatInt(v%1000, 10)
+		switch len(parts[j]) {
+		case 2:
+			parts[j] = "0" + parts[j]
+		case 1:
+			parts[j] = "00" + parts[j]
+		}
+		v = v / 1000
+		j--
+	}
+	parts[j] = strconv.Itoa(int(v))
+	return sign + strings.Join(parts[j:], ",")
+}
+
+func commaFloat(v float64) string {
+	buf := &bytes.Buffer{}
+	if v < 0 {
+		buf.Write([]byte{'-'})
+		v = 0 - v
+	}
+
+	comma := []byte{','}
+
+	parts := strings.Split(strconv.FormatFloat(v, 'f', -1, 64), ".")
+	pos := 0
+	if len(parts[0])%3 != 0 {
+		pos += len(parts[0]) % 3
+		buf.WriteString(parts[0][:pos])
+		buf.Write(comma)
+	}
+	for ; pos < len(parts[0]); pos += 3 {
+		buf.WriteString(parts[0][pos : pos+3])
+		buf.Write(comma)
+	}
+	buf.Truncate(buf.Len() - 1)
+
+	if len(parts) > 1 {
+		buf.Write([]byte{'.'})
+		buf.WriteString(parts[1])
+	}
+	return buf.String()
+}
+
+func commaStr(s string) string {
+	dotIndex := strings.Index(s, ".")
+	if dotIndex != -1 {
+		return commaStrRecursive(s[:dotIndex]) + s[dotIndex:]
+	}
+
+	return commaStrRecursive(s)
+}
+
+func commaStrRecursive(s string) string {
 	if len(s) <= 3 {
 		return s
 	}
-	return commaString(s[:len(s)-3]) + "," + commaString(s[len(s)-3:])
+	return commaStrRecursive(s[:len(s)-3]) + "," + commaStrRecursive(s[len(s)-3:])
 }

-func numString(value any) string {
-	switch reflect.TypeOf(value).Kind() {
-	case reflect.Int, reflect.Int64, reflect.Float32, reflect.Float64:
-		return fmt.Sprintf("%v", value)
-	case reflect.String:
-		{
-			sv := fmt.Sprintf("%v", value)
-			if strings.Contains(sv, ".") {
-				_, err := strconv.ParseFloat(sv, 64)
-				if err == nil {
-					return sv
-				}
-			} else {
-				_, err := strconv.ParseInt(sv, 10, 64)
-				if err == nil {
-					return sv
-				}
-			}
+// see https://github.com/dustin/go-humanize/blob/master/bytes.go
+func parseBytes(s string, kind string) (uint64, error) {
+	lastDigit := 0
+	hasComma := false
+	for _, r := range s {
+		if !(unicode.IsDigit(r) || r == '.' || r == ',') {
+			break
 		}
-	default:
-		return ""
+		if r == ',' {
+			hasComma = true
+		}
+		lastDigit++
 	}
-	return ""
+
+	num := s[:lastDigit]
+	if hasComma {
+		num = strings.Replace(num, ",", "", -1)
+	}
+
+	f, err := strconv.ParseFloat(num, 64)
+	if err != nil {
+		return 0, err
+	}
+
+	extra := strings.ToLower(strings.TrimSpace(s[lastDigit:]))
+
+	if kind == "decimal" {
+		if m, ok := decimalByteMap[extra]; ok {
+			f *= float64(m)
+			if f >= math.MaxUint64 {
+				return 0, fmt.Errorf("too large: %v", s)
+			}
+			return uint64(f), nil
+		}
+	} else {
+		if m, ok := binaryByteMap[extra]; ok {
+			f *= float64(m)
+			if f >= math.MaxUint64 {
+				return 0, fmt.Errorf("too large: %v", s)
+			}
+			return uint64(f), nil
+		}
+	}
+
+	return 0, fmt.Errorf("unhandled size name: %v", extra)
 }
--- a/formatter/formatter_test.go
+++ b/formatter/formatter_test.go
@@ -1,9 +1,10 @@
 package formatter

 import (
+	"bytes"
 	"testing"

-	"github.com/duke-git/lancet/v2/internal"
+	"github.com/duke-git/lancet/internal"
 )

 func TestComma(t *testing.T) {
@@ -12,12 +13,148 @@ func TestComma(t *testing.T) {
 	assert.Equal("", Comma("", ""))
 	assert.Equal("", Comma("aa", ""))
 	assert.Equal("", Comma("aa.a", ""))
-	assert.Equal("", Comma([]int{1}, ""))
 	assert.Equal("123", Comma("123", ""))
 	assert.Equal("12,345", Comma("12345", ""))
+	assert.Equal("12,345.6789", Comma("12345.6789", ""))
+	assert.Equal("123,456,789,000", Comma("123456789000", ""))
+	assert.Equal("12,345,678.9", Comma("12345678.9", ""))

 	assert.Equal("12,345", Comma(12345, ""))
 	assert.Equal("$12,345", Comma(12345, "$"))
 	assert.Equal("¥12,345", Comma(12345, "¥"))
 	assert.Equal("12,345.6789", Comma(12345.6789, ""))
+	assert.Equal("12,345.6789", Comma(+12345.6789, ""))
+	assert.Equal("12,345,678.9", Comma(12345678.9, ""))
+	assert.Equal("123,456,789,000", Comma(123456789000, ""))
+}
+
+func TestPretty(t *testing.T) {
+	assert := internal.NewAssert(t, "TestPretty")
+
+	cases := []interface{}{
+		"",
+		"abc",
+		123,
+		[]string{"a", "b", "c"},
+		map[string]int{"a": 1},
+		struct {
+			Abc int `json:"abc"`
+		}{Abc: 123},
+	}
+
+	expects := []string{
+		"\"\"",
+		`"abc"`,
+		"123",
+		"[\n    \"a\",\n    \"b\",\n    \"c\"\n]",
+		"{\n    \"a\": 1\n}",
+		"{\n    \"abc\": 123\n}",
+	}
+
+	for i, v := range cases {
+		result, err := Pretty(v)
+
+		assert.IsNil(err)
+
+		t.Log("result -> ", result)
+		assert.Equal(expects[i], result)
+	}
+}
+
+func TestPrettyToWriter(t *testing.T) {
+	assert := internal.NewAssert(t, "TestPrettyToWriter")
+
+	type User struct {
+		Name string `json:"name"`
+		Aage uint   `json:"age"`
+	}
+	user := User{Name: "King", Aage: 10000}
+
+	expects := "{\n    \"name\": \"King\",\n    \"age\": 10000\n}\n"
+
+	buf := &bytes.Buffer{}
+	err := PrettyToWriter(user, buf)
+
+	assert.IsNil(err)
+	assert.Equal(expects, buf.String())
+}
+
+func TestDecimalBytes(t *testing.T) {
+	assert := internal.NewAssert(t, "TestDecimalBytes")
+
+	assert.Equal("1KB", DecimalBytes(1000))
+	assert.Equal("1.024KB", DecimalBytes(1024))
+	assert.Equal("1.2346MB", DecimalBytes(1234567))
+	assert.Equal("1.235MB", DecimalBytes(1234567, 3))
+	assert.Equal("1.123GB", DecimalBytes(float64(1.123*UnitGB)))
+	assert.Equal("2.123TB", DecimalBytes(float64(2.123*UnitTB)))
+	assert.Equal("3.123PB", DecimalBytes(float64(3.123*UnitPB)))
+	assert.Equal("4.123EB", DecimalBytes(float64(4.123*UnitEB)))
+	assert.Equal("1EB", DecimalBytes(float64(1000*UnitPB)))
+}
+
+func TestBinaryBytes(t *testing.T) {
+	assert := internal.NewAssert(t, "TestBinaryBytes")
+
+	assert.Equal("1KiB", BinaryBytes(1024))
+	assert.Equal("1MiB", BinaryBytes(1024*1024))
+	assert.Equal("1.1774MiB", BinaryBytes(1234567))
+	assert.Equal("1.18MiB", BinaryBytes(1234567, 2))
+}
+
+func TestParseDecimalBytes(t *testing.T) {
+	assert := internal.NewAssert(t, "TestParseDecimalBytes")
+
+	cases := map[string]uint64{
+		"12":      uint64(12),
+		"12 k":    uint64(12000),
+		"12 kb":   uint64(12000),
+		"12kb":    uint64(12000),
+		"12k":     uint64(12000),
+		"12K":     uint64(12000),
+		"12KB":    uint64(12000),
+		"12 K":    uint64(12000),
+		"12 KB":   uint64(12000),
+		"12 Kb":   uint64(12000),
+		"12 kB":   uint64(12000),
+		"12.2 KB": uint64(12200),
+	}
+
+	for k, v := range cases {
+		result, err := ParseDecimalBytes(k)
+		assert.Equal(v, result)
+		assert.IsNil(err)
+	}
+
+	_, err := ParseDecimalBytes("12 AB")
+	assert.IsNotNil(err)
+}
+
+func TestParseBinaryBytes(t *testing.T) {
+	assert := internal.NewAssert(t, "TestParseBinaryBytes")
+
+	cases := map[string]uint64{
+		"12":       uint64(12),
+		"12 ki":    uint64(12288),
+		"12 kib":   uint64(12288),
+		"12kib":    uint64(12288),
+		"12ki":     uint64(12288),
+		"12KI":     uint64(12288),
+		"12KIB":    uint64(12288),
+		"12KiB":    uint64(12288),
+		"12 Ki":    uint64(12288),
+		"12 KiB":   uint64(12288),
+		"12 Kib":   uint64(12288),
+		"12 kiB":   uint64(12288),
+		"12.2 KiB": uint64(12492),
+	}
+
+	for k, v := range cases {
+		result, err := ParseBinaryBytes(k)
+		assert.Equal(v, result)
+		assert.IsNil(err)
+	}
+
+	_, err := ParseDecimalBytes("12 AB")
+	assert.IsNotNil(err)
 }
--- a/function/function.go
+++ b/function/function.go
@@ -10,11 +10,11 @@ import (
 )

 // After creates a function that invokes func once it's called n or more times
-func After(n int, fn any) func(args ...any) []reflect.Value {
+func After(n int, fn interface{}) func(args ...interface{}) []reflect.Value {
 	// Catch programming error while constructing the closure
 	mustBeFunction(fn)

-	return func(args ...any) []reflect.Value {
+	return func(args ...interface{}) []reflect.Value {
 		n--
 		if n < 1 {
 			return unsafeInvokeFunc(fn, args...)
@@ -24,11 +24,11 @@ func After(n int, fn any) func(args ...any) []reflect.Value {
 }

 // Before creates a function that invokes func once it's called less than n times
-func Before(n int, fn any) func(args ...any) []reflect.Value {
+func Before(n int, fn interface{}) func(args ...interface{}) []reflect.Value {
 	// Catch programming error while constructing the closure
 	mustBeFunction(fn)
 	var res []reflect.Value
-	return func(args ...any) []reflect.Value {
+	return func(args ...interface{}) []reflect.Value {
 		if n > 0 {
 			res = unsafeInvokeFunc(fn, args...)
 		}
@@ -40,20 +40,20 @@ func Before(n int, fn any) func(args ...any) []reflect.Value {
 	}
 }

-// Fn is for curry function which is func(...any) any
-type Fn func(...any) any
+// Fn is for curry function which is func(...interface{}) interface{}
+type Fn func(...interface{}) interface{}

 // Curry make a curry function
-func (f Fn) Curry(i any) func(...any) any {
-	return func(values ...any) any {
-		v := append([]any{i}, values...)
+func (f Fn) Curry(i interface{}) func(...interface{}) interface{} {
+	return func(values ...interface{}) interface{} {
+		v := append([]interface{}{i}, values...)
 		return f(v...)
 	}
 }

 // Compose compose the functions from right to left
-func Compose(fnList ...func(...any) any) func(...any) any {
-	return func(s ...any) any {
+func Compose(fnList ...func(...interface{}) interface{}) func(...interface{}) interface{} {
+	return func(s ...interface{}) interface{} {
 		f := fnList[0]
 		restFn := fnList[1:]

@@ -66,7 +66,7 @@ func Compose(fnList ...func(...any) any) func(...any) any {
 }

 // Delay make the function execution after delayed time
-func Delay(delay time.Duration, fn any, args ...any) {
+func Delay(delay time.Duration, fn interface{}, args ...interface{}) {
 	// Catch programming error while constructing the closure
 	mustBeFunction(fn)

@@ -95,7 +95,7 @@ func Debounced(fn func(), duration time.Duration) func() {
 }

 // Schedule invoke function every duration time, util close the returned bool chan
-func Schedule(d time.Duration, fn any, args ...any) chan bool {
+func Schedule(d time.Duration, fn interface{}, args ...interface{}) chan bool {
 	// Catch programming error while constructing the closure
 	mustBeFunction(fn)

@@ -113,3 +113,15 @@ func Schedule(d time.Duration, fn any, args ...any) chan bool {

 	return quit
 }
+
+// Pipeline takes a list of functions and returns a function whose param will be passed into
+// the functions one by one.
+func Pipeline(funcs ...func(interface{}) interface{}) func(interface{}) interface{} {
+	return func(arg interface{}) (result interface{}) {
+		result = arg
+		for _, fn := range funcs {
+			result = fn(result)
+		}
+		return
+	}
+}
--- a/function/function_internal.go
+++ b/function/function_internal.go
@@ -5,7 +5,7 @@ import (
 	"reflect"
 )

-func invokeFunc(fn any, args ...any) []reflect.Value {
+func invokeFunc(fn interface{}, args ...interface{}) []reflect.Value {
 	fv := functionValue(fn)
 	params := make([]reflect.Value, len(args))
 	for i, item := range args {
@@ -14,7 +14,7 @@ func invokeFunc(fn any, args ...any) []reflect.Value {
 	return fv.Call(params)
 }

-func unsafeInvokeFunc(fn any, args ...any) []reflect.Value {
+func unsafeInvokeFunc(fn interface{}, args ...interface{}) []reflect.Value {
 	fv := reflect.ValueOf(fn)
 	params := make([]reflect.Value, len(args))
 	for i, item := range args {
@@ -23,7 +23,7 @@ func unsafeInvokeFunc(fn any, args ...any) []reflect.Value {
 	return fv.Call(params)
 }

-func functionValue(function any) reflect.Value {
+func functionValue(function interface{}) reflect.Value {
 	v := reflect.ValueOf(function)
 	if v.Kind() != reflect.Func {
 		panic(fmt.Sprintf("Invalid function type, value of type %T", function))
@@ -31,7 +31,7 @@ func functionValue(function any) reflect.Value {
 	return v
 }

-func mustBeFunction(function any) {
+func mustBeFunction(function interface{}) {
 	v := reflect.ValueOf(function)
 	if v.Kind() != reflect.Func {
 		panic(fmt.Sprintf("Invalid function type, value of type %T", function))
--- a/function/function_test.go
+++ b/function/function_test.go
@@ -7,7 +7,7 @@ import (
 	"testing"
 	"time"

-	"github.com/duke-git/lancet/v2/internal"
+	"github.com/duke-git/lancet/internal"
 )

 func TestAfter(t *testing.T) {
@@ -16,7 +16,7 @@ func TestAfter(t *testing.T) {
 		fmt.Println("print done")
 		return i
 	})
-	type cb func(args ...any) []reflect.Value
+	type cb func(args ...interface{}) []reflect.Value
 	print := func(i int, s string, fn cb) {
 		fmt.Printf("print: arr[%d] is %s \n", i, s)
 		v := fn(i)
@@ -42,7 +42,7 @@ func TestBefore(t *testing.T) {
 	})

 	var res []int64
-	type cb func(args ...any) []reflect.Value
+	type cb func(args ...interface{}) []reflect.Value
 	appendStr := func(i int, s string, fn cb) {
 		v := fn(i)
 		res = append(res, v[0].Int())
@@ -62,7 +62,7 @@ func TestCurry(t *testing.T) {
 	add := func(a, b int) int {
 		return a + b
 	}
-	var addCurry Fn = func(values ...any) any {
+	var addCurry Fn = func(values ...interface{}) interface{} {
 		return add(values[0].(int), values[1].(int))
 	}
 	add1 := addCurry.Curry(1)
@@ -72,10 +72,10 @@ func TestCurry(t *testing.T) {
 func TestCompose(t *testing.T) {
 	assert := internal.NewAssert(t, "TestCompose")

-	toUpper := func(a ...any) any {
+	toUpper := func(a ...interface{}) interface{} {
 		return strings.ToUpper(a[0].(string))
 	}
-	toLower := func(a ...any) any {
+	toLower := func(a ...interface{}) interface{} {
 		return strings.ToLower(a[0].(string))
 	}

@@ -130,3 +130,21 @@ func TestSchedule(t *testing.T) {
 	expected := []string{"*", "*", "*", "*", "*"}
 	assert.Equal(expected, res)
 }
+
+func TestPipeline(t *testing.T) {
+	assert := internal.NewAssert(t, "TestPipeline")
+
+	addOne := func(x interface{}) interface{} {
+		return x.(int) + 1
+	}
+	double := func(x interface{}) interface{} {
+		return 2 * x.(int)
+	}
+	square := func(x interface{}) interface{} {
+		return x.(int) * x.(int)
+	}
+
+	f := Pipeline(addOne, double, square)
+
+	assert.Equal(36, f(2))
+}
--- a/function/watcher_test.go
+++ b/function/watcher_test.go
@@ -3,7 +3,7 @@ package function
 import (
 	"testing"

-	"github.com/duke-git/lancet/v2/internal"
+	"github.com/duke-git/lancet/internal"
 )

 func TestWatcher(t *testing.T) {
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,5 @@
-module github.com/duke-git/lancet/v2
+module github.com/duke-git/lancet

-go 1.18
+go 1.16
+
+require golang.org/x/text v0.5.0
--- a/go.sum
+++ b/go.sum
@@ -0,0 +1,25 @@
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.5.0 h1:OLmvp0KP+FVG99Ct/qFiL/Fhk4zp4QQnZ7b2U+5piUM=
+golang.org/x/text v0.5.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
--- a/internal/assert.go
+++ b/internal/assert.go
@@ -5,6 +5,7 @@
 package internal

 import (
+	"bytes"
 	"fmt"
 	"reflect"
 	"runtime"
@@ -30,14 +31,60 @@ func NewAssert(t *testing.T, caseName string) *Assert {
 }

 // Equal check if expected is equal with actual
-func (a *Assert) Equal(expected, actual any) {
+func (a *Assert) Equal(expected, actual interface{}) {
 	if compare(expected, actual) != compareEqual {
 		makeTestFailed(a.T, a.CaseName, expected, actual)
 	}
 }

+// EqualValues asserts that two objects are equal or convertable to the same types and equal.
+// https://github.com/stretchr/testify/assert/assertions.go
+func (a *Assert) EqualValues(expected, actual interface{}) {
+	if !objectsAreEqualValues(expected, actual) {
+		makeTestFailed(a.T, a.CaseName, expected, actual)
+	}
+}
+
+func objectsAreEqualValues(expected, actual interface{}) bool {
+	if objectsAreEqual(expected, actual) {
+		return true
+	}
+
+	actualType := reflect.TypeOf(actual)
+	if actualType == nil {
+		return false
+	}
+	expectedValue := reflect.ValueOf(expected)
+	if expectedValue.IsValid() && expectedValue.Type().ConvertibleTo(actualType) {
+		// Attempt comparison after type conversion
+		return reflect.DeepEqual(expectedValue.Convert(actualType).Interface(), actual)
+	}
+
+	return false
+}
+
+func objectsAreEqual(expected, actual interface{}) bool {
+	if expected == nil || actual == nil {
+		return expected == actual
+	}
+
+	exp, ok := expected.([]byte)
+	if !ok {
+		return reflect.DeepEqual(expected, actual)
+	}
+
+	act, ok := actual.([]byte)
+	if !ok {
+		return false
+	}
+	if exp == nil || act == nil {
+		return exp == nil && act == nil
+	}
+	return bytes.Equal(exp, act)
+}
+
 // NotEqual check if expected is not equal with actual
-func (a *Assert) NotEqual(expected, actual any) {
+func (a *Assert) NotEqual(expected, actual interface{}) {
 	if compare(expected, actual) == compareEqual {
 		expectedInfo := fmt.Sprintf("not %v", expected)
 		makeTestFailed(a.T, a.CaseName, expectedInfo, actual)
@@ -45,7 +92,7 @@ func (a *Assert) NotEqual(expected, actual any) {
 }

 // Greater check if expected is greate than actual
-func (a *Assert) Greater(expected, actual any) {
+func (a *Assert) Greater(expected, actual interface{}) {
 	if compare(expected, actual) != compareGreater {
 		expectedInfo := fmt.Sprintf("> %v", expected)
 		makeTestFailed(a.T, a.CaseName, expectedInfo, actual)
@@ -53,7 +100,7 @@ func (a *Assert) Greater(expected, actual any) {
 }

 // GreaterOrEqual check if expected is greate than or equal with actual
-func (a *Assert) GreaterOrEqual(expected, actual any) {
+func (a *Assert) GreaterOrEqual(expected, actual interface{}) {
 	isGreatOrEqual := compare(expected, actual) == compareGreater || compare(expected, actual) == compareEqual
 	if !isGreatOrEqual {
 		expectedInfo := fmt.Sprintf(">= %v", expected)
@@ -62,7 +109,7 @@ func (a *Assert) GreaterOrEqual(expected, actual any) {
 }

 // Less check if expected is less than actual
-func (a *Assert) Less(expected, actual any) {
+func (a *Assert) Less(expected, actual interface{}) {
 	if compare(expected, actual) != compareLess {
 		expectedInfo := fmt.Sprintf("< %v", expected)
 		makeTestFailed(a.T, a.CaseName, expectedInfo, actual)
@@ -70,7 +117,7 @@ func (a *Assert) Less(expected, actual any) {
 }

 // LessOrEqual check if expected is less than or equal with actual
-func (a *Assert) LessOrEqual(expected, actual any) {
+func (a *Assert) LessOrEqual(expected, actual interface{}) {
 	isLessOrEqual := compare(expected, actual) == compareLess || compare(expected, actual) == compareEqual
 	if !isLessOrEqual {
 		expectedInfo := fmt.Sprintf("<= %v", expected)
@@ -79,14 +126,14 @@ func (a *Assert) LessOrEqual(expected, actual any) {
 }

 // IsNil check if value is nil
-func (a *Assert) IsNil(value any) {
+func (a *Assert) IsNil(value interface{}) {
 	if value != nil {
 		makeTestFailed(a.T, a.CaseName, nil, value)
 	}
 }

 // IsNotNil check if value is not nil
-func (a *Assert) IsNotNil(value any) {
+func (a *Assert) IsNotNil(value interface{}) {
 	if value == nil {
 		makeTestFailed(a.T, a.CaseName, "not nil", value)
 	}
@@ -94,7 +141,7 @@ func (a *Assert) IsNotNil(value any) {

 // compare x and y return :
 // x > y -> 1, x < y -> -1, x == y -> 0, x != y -> -2
-func compare(x, y any) int {
+func compare(x, y interface{}) int {
 	vx := reflect.ValueOf(x)
 	vy := reflect.ValueOf(y)

@@ -163,7 +210,7 @@ func compare(x, y any) int {
 }

 // logFailedInfo make test failed and log error info
-func makeTestFailed(t *testing.T, caseName string, expected, actual any) {
+func makeTestFailed(t *testing.T, caseName string, expected, actual interface{}) {
 	_, file, line, _ := runtime.Caller(2)
 	errInfo := fmt.Sprintf("Case %v failed. file: %v, line: %v, expected: %v, actual: %v.", caseName, file, line, expected, actual)
 	t.Error(errInfo)
--- a/lancetconstraints/constraints.go
+++ b/lancetconstraints/constraints.go
@@ -1,18 +0,0 @@
-// Copyright 2021 dudaodong@gmail.com. All rights reserved.
-// Use of this source code is governed by MIT license
-
-// Package lancetconstraints contain some comstomer constraints.
-package lancetconstraints
-
-// Comparator is for comparing two values
-type Comparator interface {
-	// Compare v1 and v2
-	// Ascending order: should return 1 -> v1 > v2, 0 -> v1 = v2, -1 -> v1 < v2
-	// Descending order: should return 1 -> v1 < v2, 0 -> v1 = v2, -1 -> v1 > v2
-	Compare(v1, v2 any) int
-}
-
-// Number contains all types of number and uintptr, used for generics constraint
-type Number interface {
-	int | int8 | int16 | int32 | int64 | uint | uint8 | uint16 | uint32 | uint64 | uintptr | float32 | float64
-}
--- a/mathutil/mathutil.go
+++ b/mathutil/mathutil.go
@@ -9,8 +9,6 @@ import (
 	"math"
 	"strconv"
 	"strings"
-
-	"github.com/duke-git/lancet/v2/lancetconstraints"
 )

 // Exponent calculate x^n
@@ -93,39 +91,101 @@ func TruncRound(x float64, n int) float64 {
 	return res
 }

-// Max return max value of params
-func Max[T lancetconstraints.Number](numbers ...T) T {
-	max := numbers[0]
+// AngleToRadian converts angle value to radian value.
+func AngleToRadian(angle float64) float64 {
+	radian := angle * (math.Pi / 180)
+	return radian
+}

-	for _, v := range numbers {
-		if max < v {
-			max = v
+// RadianToAngle converts radian value to angle value.
+func RadianToAngle(radian float64) float64 {
+	angle := radian * (180 / math.Pi)
+	return angle
+}
+
+// PointDistance get two points distance.
+func PointDistance(x1, y1, x2, y2 float64) float64 {
+	a := x1 - x2
+	b := y1 - y2
+	c := math.Pow(a, 2) + math.Pow(b, 2)
+
+	return math.Sqrt(c)
+}
+
+// IsPrimes checks if number is prime number.
+func IsPrime(n int) bool {
+	if n < 2 {
+		return false
+	}
+
+	for i := 2; i <= int(math.Sqrt(float64(n))); i++ {
+		if n%i == 0 {
+			return false
 		}
 	}

-	return max
+	return true
 }

-// Min return min value of params
-func Min[T lancetconstraints.Number](numbers ...T) T {
-	min := numbers[0]
+// GCD return greatest common divisor (GCD) of integers.
+func GCD(integers ...int) int {
+	result := integers[0]

-	for _, v := range numbers {
-		if min > v {
-			min = v
+	for k := range integers {
+		result = gcd(integers[k], result)
+
+		if result == 1 {
+			return 1
 		}
 	}

-	return min
+	return result
 }

-// Average return average value of params
-func Average[T lancetconstraints.Number](numbers ...T) T {
-	var sum T
-	n := T(len(numbers))
-
-	for _, v := range numbers {
-		sum += v
+// find greatest common divisor (GCD)
+func gcd(a, b int) int {
+	if b == 0 {
+		return a
 	}
-	return sum / n
+
+	return gcd(b, a%b)
+}
+
+// LCM return Least Common Multiple (LCM) of integers.
+func LCM(integers ...int) int {
+	result := integers[0]
+
+	for k := range integers {
+		result = lcm(integers[k], result)
+	}
+
+	return result
+}
+
+// find Least Common Multiple (LCM) via GCD.
+func lcm(a, b int) int {
+	if a == 0 || b == 0 {
+		panic("lcm function: provide non zero integers only.")
+	}
+	return a * b / gcd(a, b)
+}
+
+// Cos returns the cosine of the radian argument.
+func Cos(radian float64, precision ...int) float64 {
+	t := 1.0 / (2.0 * math.Pi)
+	radian *= t
+	radian -= 0.25 + math.Floor(radian+0.25)
+	radian *= 16.0 * (math.Abs(radian) - 0.5)
+	radian += 0.225 * radian * (math.Abs(radian) - 1.0)
+
+	if len(precision) == 1 {
+		return TruncRound(radian, precision[0])
+	}
+
+	return TruncRound(radian, 3)
+}
+
+// Cos returns the sine of the radian argument.
+func Sin(radian float64, precision ...int) float64 {
+	return Cos((math.Pi / 2) - radian)
 }
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
dudaodong	5a8ff17b52	release v1.3.9	2023-06-01 10:06:48 +08:00
dudaodong	6b46a0c05c	feat: add WriteBytesToFile and WriteStringToFile	2023-05-31 17:36:12 +08:00
dudaodong	4b8b624b4c	feat: add ContainsAll and ContainsAny	2023-05-31 17:27:25 +08:00
dudaodong	f274375e62	feat: add IsWeekend	2023-05-31 17:23:47 +08:00
dudaodong	6dc017a5fa	feat: add BetweenSeconds and DayOfYear	2023-05-31 10:12:17 +08:00
dudaodong	e1fb97095d	feat: add ReplaceWithMap, Trim, SplitAndTrim, HideString	2023-05-30 14:12:56 +08:00
dudaodong	d8f5a15590	feat: add AddYear and IsLeapYear	2023-05-30 14:07:11 +08:00
dudaodong	1202ac955d	fix: fix timeFormat issue	2023-05-30 11:59:46 +08:00
dudaodong	84b2cec9b5	fix: fix PingConnected failed in win os	2023-05-30 11:58:29 +08:00
dudaodong	2d01a13787	feat: add ToInterface and CopyProperties	2023-05-30 11:54:57 +08:00
dudaodong	db9b045500	doc: add Cos, Sin, LCM, GCD function	2023-05-30 11:47:00 +08:00
dudaodong	2701bcc4d2	feat: add Cos, Sin, LCM, GCD function	2023-05-30 11:41:54 +08:00
dudaodong	b9745fd08b	fix: comment TestMTime	2023-05-30 11:02:03 +08:00
dudaodong	3b1597d6f7	fix: fix body param bug when send post request	2023-05-30 11:01:39 +08:00
dudaodong	40ab5e8f7b	release v1.3.8	2023-04-26 18:04:50 +08:00
dudaodong	cacedf2a05	doc: add document for compare package	2023-04-26 11:25:04 +08:00
dudaodong	4fc391895b	feat: add new function for fileutil package	2023-04-26 11:12:48 +08:00
dudaodong	b419319e66	doc: update doc for netutil package	2023-04-19 16:19:42 +08:00
dudaodong	db34b5f69c	update readme file	2023-04-19 15:50:01 +08:00
dudaodong	ee44526d9e	feat: move new functions from v2 version	2023-04-19 15:49:07 +08:00
dudaodong	6576b1f0cb	feat: add new function for system and strutil package	2023-04-19 14:36:33 +08:00
dudaodong	93108bafb9	feat: add option support for ExecCommand	2023-04-19 14:26:15 +08:00
dudaodong	07f5e0697f	feat: add option support for ExecCommand	2023-04-19 14:25:31 +08:00
dudaodong	4ba91d7e4c	feat: add IsPingConnected and IsTelnetConnected	2023-04-19 14:07:11 +08:00
dudaodong	ab81d9c283	fix: fix StructToUrlValues failed when tag contain omitempty	2023-03-06 17:23:54 +08:00
dudaodong	a74038466f	release v1.3.7	2023-03-01 10:04:15 +08:00
dudaodong	02daa7f6cb	doc: add new function docs	2023-02-28 15:09:05 +08:00
dudaodong	fef6fd7b9d	fix: fix issue #75	2023-02-23 11:51:26 +08:00
dudaodong	f6cd98086f	doc: add doc for Pipeline function	2023-02-23 10:52:07 +08:00
dudaodong	24eb2bbacd	doc: format all markdown doc	2023-02-23 10:36:54 +08:00
dudaodong	15c1537bf0	doc: add doc for SplitWords and WordCount	2023-02-23 10:23:38 +08:00
dudaodong	c02654559a	doc: add pad function	2023-02-23 10:19:05 +08:00
dudaodong	634ca09e8c	feat: add CopyProperties for merge properties between structs	2023-02-20 14:03:02 +08:00
dudaodong	f2e743dcf4	release v1.3.6	2023-02-16 11:56:11 +08:00
dudaodong	f8f58cae10	doc: add doc for DeepClone function	2023-02-16 11:53:28 +08:00
dudaodong	215b79140d	feat: add DeepClone	2023-02-16 11:50:11 +08:00
dudaodong	0bd675340f	fix: fix AesEcbEncrypt failed with key lenght is 24 or 32	2023-02-16 11:45:08 +08:00
dudaodong	f3d73899b1	release v1.3.5	2022-12-15 16:36:15 +08:00
dudaodong	d4a20b239a	add new function	2022-12-15 16:35:33 +08:00
dudaodong	4c28431451	fix: fix lint issue	2022-12-15 16:31:04 +08:00
dudaodong	168ed096c7	fix: fix ExecCommand bug forwindows	2022-12-15 16:29:36 +08:00
dudaodong	a060769635	clean code	2022-12-15 16:27:21 +08:00
dudaodong	0a99492cf6	feat: add IsGBK	2022-12-15 16:21:09 +08:00
dudaodong	fb3de03f37	clean document	2022-12-15 16:13:32 +08:00
dudaodong	43c2fd2a22	feat: add UpperKebabCase/UpperSnakeCase	2022-12-15 16:05:02 +08:00
dudaodong	279d0754ba	release v1.3.4	2022-11-17 16:14:42 +08:00
dudaodong	f133b32faa	fix: issue#62: fix ZipSlip bug	2022-11-17 16:14:03 +08:00
dudaodong	b98d5edbb5	release v1.3.3	2022-11-08 15:14:34 +08:00
dudaodong	9e39c31087	docs: update doc for random package	2022-11-08 15:03:42 +08:00
dudaodong	26bc40c614	feat: add new random function	2022-11-08 14:54:17 +08:00
dudaodong	76d68e326b	release v1.3.2	2022-08-31 17:05:38 +08:00
dudaodong	67b4782ac2	doc: add document for functions in netutil/http_client.go	2022-08-31 15:53:18 +08:00
dudaodong	1d8b9a2625	feat: add http client for sending http request	2022-08-31 11:49:27 +08:00
dudaodong	94ae1acc78	doc: update readme file	2022-08-29 15:31:19 +08:00
dudaodong	aece2995d6	refactor: change ReverseStr to Reverse in strutil package	2022-08-29 15:11:15 +08:00
dudaodong	f5ec5eb58d	feat: add EncodeByte and DecodeByte	2022-08-29 15:08:50 +08:00
dudaodong	d62284e9a6	feat: add IsZeroValue function	2022-08-29 14:59:36 +08:00
dudaodong	b6815224fd	release v1.3.1	2022-08-02 17:52:18 +08:00
dudaodong	5931b882ee	doc: update document for system package	2022-07-29 13:33:23 +08:00
dudaodong	f8096e3585	doc: update slice document	2022-07-29 13:31:04 +08:00
dudaodong	979381bfb7	doc: update convertor document	2022-07-29 13:28:25 +08:00
dudaodong	3e2c25f827	doc: update netutil document	2022-07-29 13:23:30 +08:00
dudaodong	2c7bcc9fbb	doc: update slice document	2022-07-29 13:17:05 +08:00
dudaodong	3a944ab12f	test: update slice unit test	2022-07-27 15:31:12 +08:00
dudaodong	387079d034	feat: os.go, add GetOsBits	2022-07-27 15:27:39 +08:00
dudaodong	33e3631b72	fix: fix aes/des cbc crypto iv bug	2022-07-27 15:26:45 +08:00
dudaodong	b3149ea619	feat: convertor.go, add ToChannel	2022-07-27 15:22:43 +08:00
dudaodong	116ff284c3	feat: net.go, add IsInternalIP, GetRequestPublicIp, EncodeUrl	2022-07-27 15:18:20 +08:00
dudaodong	0cb251f7b8	feat: add ToSlice and ToSlicePointer and AppendIfAbsent	2022-07-27 15:12:14 +08:00
dudaodong	683def2242	docs: update go version badge	2022-06-24 09:41:46 +08:00
dudaodong	d4a90f2869	release v1.3.0	2022-06-22 16:30:45 +08:00
dudaodong	be67de3b40	release v1.3.0	2022-06-22 15:58:41 +08:00
dudaodong	6898ed413e	docs: add doc for UniqueBy function	2022-06-22 15:47:48 +08:00
dudaodong	5dbdbcd651	docs: add doc for UniqueBy function	2022-06-22 15:45:29 +08:00
dudaodong	ae0facd32d	refactor: clean code for slice/slice.go	2022-06-22 14:21:45 +08:00
dudaodong	2d7e19fb87	feat: add UniqueBy function in slice.go	2022-06-22 12:00:01 +08:00
dudaodong	24d4a03227	update .gitignore file	2022-06-22 11:27:31 +08:00
dudaodong	93fb089f6e	docs: add CreateDir function for fileutil	2022-06-17 17:25:16 +08:00
dudaodong	2fe272f2ef	docs: add CreateDir function for fileutil	2022-06-17 17:22:08 +08:00
dudaodong	77859ffa15	docs: add doc for SplitEx function	2022-06-17 17:19:59 +08:00
dudaodong	f83f47df3a	feat: add SplitEx function	2022-06-17 17:13:58 +08:00
dudaodong	885c08847d	docs: add doc for function IndexOf and LastIndexOf	2022-06-17 17:11:09 +08:00
dudaodong	cc4a20751f	test: add unit test for funcation IndexOf and LastIndexOf	2022-06-17 17:02:44 +08:00
dudaodong	b0d1d39452	feat: add IndexOf and LastIndexOf function in slice.go	2022-06-17 17:01:37 +08:00
dudaodong	02fa7bc8be	docs: add doc for function Equal and EqualWithFunc	2022-06-17 16:57:42 +08:00
dudaodong	433eb63b86	feat: add EqualWith function for slice	2022-06-17 15:47:36 +08:00
dudaodong	a2541dac03	feat: add Equal function for slice	2022-06-17 15:37:36 +08:00
dudaodong	690e746811	update readme file	2022-04-29 14:50:29 +08:00
dudaodong	7cb97a26c5	release v1.2.9	2022-04-14 11:41:46 +08:00
dudaodong	39d373d37b	fix: fix http post to support multipart/form-data header	2022-04-14 11:39:21 +08:00
dudaodong	1aefd6aa12	release v1.2.8	2022-04-13 11:46:14 +08:00
dudaodong	c7aa44b8a4	fix: fix http post fucntion	2022-04-13 11:38:45 +08:00
dudaodong	0e3dc68de5	release v1.2.7	2022-03-29 10:52:55 +08:00
dudaodong	4083e75ed4	fix: fix ToBytes bug	2022-03-26 21:09:28 +08:00
dudaodong	1327eff62f	docs: add doc for unix time	2022-03-24 16:09:19 +08:00
dudaodong	eb24c37143	docs: add doc for unix time	2022-03-24 16:07:17 +08:00
dudaodong	b7a6c91064	feat: add unix date conversion	2022-03-24 16:03:57 +08:00
dudaodong	555e185871	feat: add unix date conversion	2022-03-24 16:01:41 +08:00
dudaodong	cb0efc5cc7	docs: replace path '/main' with '/v1'	2022-03-16 16:18:28 +08:00