diff --git a/README.md b/README.md
index 66368ae..2194ef4 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 <br/>
 
 ![Go version](https://img.shields.io/badge/go-v1.16-9cf)
-[![Release](https://img.shields.io/badge/release-1.3.2-green.svg)](https://github.com/duke-git/lancet/releases)
+[![Release](https://img.shields.io/badge/release-1.3.3-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)
@@ -23,10 +23,10 @@ English | [简体中文](./README_zh-CN.md)
 
 ## Feature
 
-- 👏 Comprehensive, efficient and reusable.
-- 💪 200+ 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.
+-   💪 200+ go util functions, support string, slice, datetime, net, crypt...
+-   💅 Only depend on the go standard library.
+-   🌍 Unit test for every exported function.
 
 ## Installation
 
@@ -62,25 +62,28 @@ func main() {
 ```
 
 ## API Documentation
+
 ### 1. Convertor package contains some functions for data convertion.
 
 ```go
 import "github.com/duke-git/lancet/convertor"
 ```
+
 #### 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)
-  
+
+-   [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)
+
 ### 2. Cryptor package is for data encryption and decryption.
 
 ```go
@@ -88,76 +91,78 @@ 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)
+
+-   [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)
 
 ### 3. 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)
-- [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)
+
+-   [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)
+-   [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)
 
 ### 4. Fileutil package implements some basic functions for file operations.
 
@@ -167,29 +172,31 @@ import "github.com/duke-git/lancet/fileutil"
 
 #### Function list：
 
-- [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)
+-   [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)
 
 ### 5. Formatter contains some functions for data formatting.
 
 ```go
 import "github.com/duke-git/lancet/formatter"
 ```
+
 #### Function list:
-- [Comma](https://github.com/duke-git/lancet/blob/v1/docs/formatter.md#Comma)
+
+-   [Comma](https://github.com/duke-git/lancet/blob/v1/docs/formatter.md#Comma)
 
 ### Function package can control the flow of function execution and support part of functional programming
 
@@ -198,14 +205,14 @@ import "github.com/duke-git/lancet/function"
 ```
 
 #### Function list:
-- [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)
-- [Watcher](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Watcher)
 
+-   [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)
+-   [Watcher](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Watcher)
 
 ### 6. Mathutil package implements some functions for math calculation.
 
@@ -214,14 +221,14 @@ import "github.com/duke-git/lancet/mathutil"
 ```
 
 #### Function list:
-- [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)
 
+-   [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)
 
 ### 7. Netutil package contains functions to get net information and send http request.
 
@@ -230,22 +237,22 @@ 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)
 
+-   [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)
 
 ### 8. Random package implements some basic functions to generate random int and string.
 
@@ -254,10 +261,15 @@ 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)
-- [UUIdV4](https://github.com/duke-git/lancet/blob/v1/docs/random.md#UUIdV4)
+
+-   [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)
 
 ### 9. Retry package is for executing a function repeatedly until it was successful or canceled by the context.
 
@@ -266,11 +278,12 @@ 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)
+
+-   [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)
 
 ### 10. Slice contains some functions to manipulate slice.
 
@@ -279,46 +292,47 @@ 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)
+
+-   [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)
 
 ### 11. Strutil package contains some functions to manipulate string.
 
@@ -328,24 +342,24 @@ 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)
-- [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)
-- [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)
-- [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)
-- [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)
-  
+-   [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)
+-   [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)
+-   [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)
+-   [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)
+-   [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)
+
 ### 12. System package contain some functions about os, runtime, shell command.
 
 ```go
@@ -353,51 +367,52 @@ 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)
+
+-   [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)
 
 ### 13. 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)
-- [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)
-- [IsIntStr](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsIntStr)
-- [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)
-  
+-   [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)
+-   [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)
+-   [IsIntStr](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsIntStr)
+-   [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)
 
 ## How to Contribute
 
@@ -407,4 +422,4 @@ I really appreciate any code commits which make lancet lib powerful. Please foll
 2. Create your feature branch.
 3. Commit your changes.
 4. Push to the branch
-5. Create new pull request.
\ No newline at end of file
+5. Create new pull request.
diff --git a/README_zh-CN.md b/README_zh-CN.md
index 151ad0e..78f38f5 100644
--- a/README_zh-CN.md
+++ b/README_zh-CN.md
@@ -4,7 +4,7 @@
 <br/>
 
 ![Go version](https://img.shields.io/badge/go-v1.16-9cf)
-[![Release](https://img.shields.io/badge/release-1.3.2-green.svg)](https://github.com/duke-git/lancet/releases)
+[![Release](https://img.shields.io/badge/release-1.3.3-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)
@@ -20,13 +20,12 @@
 
 简体中文 | [English](./README.md)
 
-
 ## 特性
 
-- 👏 全面、高效、可复用
-- 💪 200+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
+-   💪 200+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
 
@@ -36,7 +35,7 @@ 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/strutil"
@@ -44,7 +43,7 @@ import "github.com/duke-git/lancet/strutil"
 
 ## 例子
 
-此处以字符串工具函数Reverse（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
@@ -61,104 +60,110 @@ func main() {
 }
 ```
 
-## API文档
-### 1. convertor转换器包支持一些常见的数据类型转换。
+## API 文档
+
+### 1. 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/convertor"
 ```
+
 #### 函数列表:
-- [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)
-  
-### 2. 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。
+
+-   [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)
+
+### 2. 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/cryptor"
 ```
 
 #### 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)
 
-### 3. datetime日期时间处理包，格式化日期，比较日期。
+-   [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)
 
+### 3. datetime 日期时间处理包，格式化日期，比较日期。
 
 ```go
 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)
-- [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)
-### 4. fileutil包支持文件基本操作。
+
+-   [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)
+-   [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)
+
+### 4. fileutil 包支持文件基本操作。
 
 ```go
 import "github.com/duke-git/lancet/fileutil"
@@ -166,159 +171,169 @@ import "github.com/duke-git/lancet/fileutil"
 
 #### 函数列表：
 
-- [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)
+-   [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)
 
-### 5. formatter格式化器包含一些数据格式化处理方法。
+### 5. 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/formatter"
 ```
+
 #### 函数列表:
-- [Comma](https://github.com/duke-git/lancet/blob/v1/docs/formatter_zh-CN.md#Comma)
 
+-   [Comma](https://github.com/duke-git/lancet/blob/v1/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。
+### 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/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)
-- [Watcher](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Watcher)
 
-### 6. mathutil包实现了一些数学计算的函数。
+-   [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)
+-   [Watcher](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Watcher)
+
+### 6. mathutil 包实现了一些数学计算的函数。
 
 ```go
 import "github.com/duke-git/lancet/mathutil"
 ```
 
 #### Function list:
-- [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)
 
-### 7. 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)
+
+### 7. netutil 网络包支持获取 ip 地址，发送 http 请求。
 
 ```go
 import "github.com/duke-git/lancet/netutil"
 ```
 
 #### 函数列表:
-- [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)
 
-### 8. random随机数生成器包，可以生成随机[]bytes, int, string。
+-   [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)
+
+### 8. random 随机数生成器包，可以生成随机[]bytes, int, string。
 
 ```go
 import "github.com/duke-git/lancet/random"
 ```
 
 #### 函数列表:
-- [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)
-- [UUIdV4](https://github.com/duke-git/lancet/blob/v1/docs/random.md#UUIdV4)
-### 9. retry重试执行函数直到函数运行成功或被context cancel。
+
+-   [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)
+
+### 9. 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/retry"
 ```
 
 #### 函数列表:
-- [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)
 
+-   [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)
 
-### 10. slice包包含操作切片的方法集合。
+### 10. slice 包包含操作切片的方法集合。
 
 ```go
 import "github.com/duke-git/lancet/slice"
 ```
 
 #### 函数列表:
-- [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)
 
+-   [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)
 
-### 12. strutil包含处理字符串的相关函数。
+### 12. strutil 包含处理字符串的相关函数。
 
 ```go
 import "github.com/duke-git/lancet/strutil"
@@ -326,84 +341,84 @@ 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)
-- [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)
-- [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)
-- [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)
-- [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)
-  
+-   [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)
+-   [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)
+-   [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)
+-   [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)
+-   [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)
 
-### 13. system包含os, runtime, shell command相关函数。
+### 13. 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)
 
-### 14. validator验证器包，包含常用字符串格式验证函数。
+-   [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)
+
+### 14. 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)
-- [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)
-- [IsIntStr](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsIntStr)
-- [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)
-
+-   [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)
+-   [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)
+-   [IsIntStr](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsIntStr)
+-   [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)
 
 ## 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。
\ No newline at end of file
+4. Push 分支。
+5. 创建新的 pull request。