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lancet/README.md
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2022-11-08 15:22:37 +08:00

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<div align=center>
<a href="https://uvdream.github.io/lancet-docs/en/"><img src="./logo.png" width="200" height="200"/></a>
<br/>
![Go version](https://img.shields.io/badge/go-%3E%3Dv1.18-9cf)
[![Release](https://img.shields.io/badge/release-2.1.9-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)
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[![codecov](https://codecov.io/gh/duke-git/lancet/branch/main/graph/badge.svg?token=FC48T1F078)](https://codecov.io/gh/duke-git/lancet)
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</div>
<div STYLE="page-break-after: always;"></div>
<p style="font-size: 20px">
Lancet is a comprehensive, efficient, and reusable util function library of go. Inspired by the java apache common package and lodash.js.
</p>
English | [简体中文](./README_zh-CN.md)
## Feature
- 👏 Comprehensive, efficient and reusable.
- 💪 300+ 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 v1.3.3. </b>
```go
go get github.com/duke-git/lancet@v1.3.3 // below go1.18, install latest version of v1.x.x
```
## Usage
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"
```
## Example
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"
)
func main() {
s := "hello"
rs := strutil.Reverse(s)
fmt.Println(rs) //olleh
}
```
## API Documentation
## [lancet API doc](https://uvdream.github.io/lancet-docs/) Thanks [@UvDream](https://github.com/UvDream) for contributing.
### 1. Algorithm package implements some basic algorithm. eg. sort, search.
```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)
### 2. Concurrency package contain some functions to support concurrent programming. eg, goroutine, channel, async.
```go
import "github.com/duke-git/lancet/v2/concurrency"
```
#### Function list:
- [NewChannel](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#NewChannel)
- [Bridge](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#Bridge)
- [FanIn](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#FanIn)
- [Generate](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#Generate)
- [Or](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#Or)
- [OrDone](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#OrDone)
- [Repeat](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#Repeat)
- [RepeatFn](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#RepeatFn)
- [Take](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#Take)
- [Tee](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#Tee)
### 3. Condition package contains some functions for conditional judgment. eg. And, Or, TernaryOperator...
```go
import "github.com/duke-git/lancet/v2/condition"
```
#### Function list:
- [Bool](https://github.com/duke-git/lancet/blob/main/docs/condition.md#Bool)
- [And](https://github.com/duke-git/lancet/blob/main/docs/condition.md#And)
- [Or](https://github.com/duke-git/lancet/blob/main/docs/condition.md#Or)
- [Xor](https://github.com/duke-git/lancet/blob/main/docs/condition.md#Xor)
- [Nor](https://github.com/duke-git/lancet/blob/main/docs/condition.md#Nor)
- [Nand](https://github.com/duke-git/lancet/blob/main/docs/condition.md#Nand)
- [TernaryOperator](https://github.com/duke-git/lancet/blob/main/docs/condition.md#TernaryOperator)
### 4. 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)
- [ToChannel](https://github.com/duke-git/lancet/blob/main/docs/convertor.md#ToChannel)
- [ToFloat](https://github.com/duke-git/lancet/blob/main/docs/convertor.md#ToFloat)
- [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)
- [ToMap](https://github.com/duke-git/lancet/blob/main/docs/convertor.md#ToMap)
- [ToPointer](https://github.com/duke-git/lancet/blob/main/docs/convertor.md#ToPointer)
- [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)
- [MapToSlice](https://github.com/duke-git/lancet/blob/main/docs/convertor.md#MapToSlice)
- [EncodeByte](https://github.com/duke-git/lancet/blob/main/docs/convertor.md#EncodeByte)
- [DecodeByte](https://github.com/duke-git/lancet/blob/main/docs/convertor.md#DecodeByte)
### 5. Cryptor package is for data encryption and decryption.
```go
import "github.com/duke-git/lancet/v2/cryptor"
```
#### 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)
### 6. Datetime package supports date and time format and compare.
```go
import "github.com/duke-git/lancet/v2/datetime"
```
#### 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)
### 7. Datastructure package constains some common data structure. eg. list, linklist, stack, queue, set, tree, graph.
```go
import list "github.com/duke-git/lancet/v2/datastructure/list"
import link "github.com/duke-git/lancet/v2/datastructure/link"
import stack "github.com/duke-git/lancet/v2/datastructure/stack"
import queue "github.com/duke-git/lancet/v2/datastructure/queue"
import set "github.com/duke-git/lancet/v2/datastructure/set"
import tree "github.com/duke-git/lancet/v2/datastructure/tree"
import heap "github.com/duke-git/lancet/v2/datastructure/heap"
import hashmap "github.com/duke-git/lancet/v2/datastructure/hashmap"
```
#### Function list:
- [List](https://github.com/duke-git/lancet/blob/main/docs/datastructure/list.md)
- [Linklist](https://github.com/duke-git/lancet/blob/main/docs/datastructure/linklist.md)
- [Stack](https://github.com/duke-git/lancet/blob/main/docs/datastructure/stack.md)
- [Queue](https://github.com/duke-git/lancet/blob/main/docs/datastructure/queue.md)
- [Set](https://github.com/duke-git/lancet/blob/main/docs/datastructure/set.md)
- [Tree](https://github.com/duke-git/lancet/blob/main/docs/datastructure/tree.md)
- [Heap](https://github.com/duke-git/lancet/blob/main/docs/datastructure/heap.md)
- [HashMap](https://github.com/duke-git/lancet/blob/main/docs/datastructure/hashmap.md)
### 8. Fileutil package implements some basic functions for file operations.
```go
import "github.com/duke-git/lancet/v2/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)
- [CreateDir](https://github.com/duke-git/lancet/blob/main/docs/fileutil.md#CreateDir)
- [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)
### 9. 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)
### 10. 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)
- [Pipeline](https://github.com/duke-git/lancet/blob/main/docs/function.md#Pipeline)
- [Watcher](https://github.com/duke-git/lancet/blob/main/docs/function.md#Watcher)
### 11. Maputil package includes some functions to manipulate map.
```go
import "github.com/duke-git/lancet/v2/maputil"
```
#### Function list:
- [ForEach](https://github.com/duke-git/lancet/blob/main/docs/maputil.md#ForEach)
- [Filter](https://github.com/duke-git/lancet/blob/main/docs/maputil.md#Filter)
- [Intersect](https://github.com/duke-git/lancet/blob/main/docs/maputil.md#Intersect)
- [Keys](https://github.com/duke-git/lancet/blob/main/docs/maputil.md#Keys)
- [Merge](https://github.com/duke-git/lancet/blob/main/docs/maputil.md#Merge)
- [Minus](https://github.com/duke-git/lancet/blob/main/docs/maputil.md#Minus)
- [Values](https://github.com/duke-git/lancet/blob/main/docs/maputil.md#Values)
- [IsDisjoint](https://github.com/duke-git/lancet/blob/main/docs/maputil.md#IsDisjoint)
### 12. 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)
- [MaxBy](https://github.com/duke-git/lancet/blob/main/docs/mathutil.md#MaxBy)
- [Min](https://github.com/duke-git/lancet/blob/main/docs/mathutil.md#Min)
- [MinBy](https://github.com/duke-git/lancet/blob/main/docs/mathutil.md#MinBy)
- [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)
### 13. 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)
- [EncodeUrl](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#EncodeUrl)
- [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)
- [GetRequestPublicIp](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#GetRequestPublicIp)
- [IsPublicIP](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#IsPublicIP)
- [IsInternalIP](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#IsInternalIP)
- [HttpRequest](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#HttpRequest)
- [HttpClient](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#HttpClient)
- [SendRequest](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#SendRequest)
- [DecodeResponse](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#DecodeResponse)
- [StructToUrlValues](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#StructToUrlValues)
- [HttpGet<sup>Deprecated</sup>](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#HttpGet)
- [HttpDelete<sup>Deprecated</sup>](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#HttpDelete)
- [HttpPost<sup>Deprecated</sup>](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#HttpPost)
- [HttpPut<sup>Deprecated</sup>](https://github.com/duke-git/lancet/blob/main/docs/netutil.md#HttpPut)
- [HttpPatch<sup>Deprecated</sup>](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)
### 14. 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)
- [RandUpper](https://github.com/duke-git/lancet/blob/main/docs/random.md#RandUpper)
- [RandLower](https://github.com/duke-git/lancet/blob/main/docs/random.md#RandLower)
- [RandNumeral](https://github.com/duke-git/lancet/blob/main/docs/random.md#RandNumeral)
- [RandNumeralOrLetter](https://github.com/duke-git/lancet/blob/main/docs/random.md#RandNumeralOrLetter)
- [UUIdV4](https://github.com/duke-git/lancet/blob/main/docs/random.md#UUIdV4)
### 15. 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)
### 16. Slice contains some functions to manipulate slice.
```go
import "github.com/duke-git/lancet/v2/slice"
```
#### Function list:
- [AppendIfAbsent](https://github.com/duke-git/lancet/blob/main/docs/slice.md#AppendIfAbsent)
- [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)
- [Equal](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Equal)
- [EqualWith](https://github.com/duke-git/lancet/blob/main/docs/slice.md#EqualWith)
- [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)
- [Flatten](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Flatten)
- [FlattenDeep](https://github.com/duke-git/lancet/blob/main/docs/slice.md#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)
- [IndexOf](https://github.com/duke-git/lancet/blob/main/docs/slice.md#IndexOf)
- [LastIndexOf](https://github.com/duke-git/lancet/blob/main/docs/slice.md#LastIndexOf)
- [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)
- [Replace](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Replace)
- [ReplaceAll](https://github.com/duke-git/lancet/blob/main/docs/slice.md#ReplaceAll)
- [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)
- [SymmetricDifference](https://github.com/duke-git/lancet/blob/main/docs/slice.md#SymmetricDifference)
- [ToSlice](https://github.com/duke-git/lancet/blob/main/docs/slice.md#ToSlice)
- [ToSlicePointer](https://github.com/duke-git/lancet/blob/main/docs/slice.md#ToSlicePointer)
- [Unique](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Unique)
- [UniqueBy](https://github.com/duke-git/lancet/blob/main/docs/slice.md#UniqueBy)
- [Union](https://github.com/duke-git/lancet/blob/main/docs/slice.md#Union)
- [UnionBy](https://github.com/duke-git/lancet/blob/main/docs/slice.md#UnionBy)
- [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)
- [KeyBy](https://github.com/duke-git/lancet/blob/main/docs/slice.md#KeyBy)
### 17. Strutil package contains some functions to manipulate string.
```go
import "github.com/duke-git/lancet/v2/strutil"
```
#### 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)
- [Reverse](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#Reverse)
- [SnakeCase](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#SnakeCase)
- [SplitEx](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#SplitEx)
- [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)
### 19. System package contain some functions about os, runtime, shell command.
```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)
- [GetOsBits](https://github.com/duke-git/lancet/blob/main/docs/system.md#GetOsBits)
### 19. Validator package contains some functions for data validation.
```go
import "github.com/duke-git/lancet/v2/validator"
```
#### 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)
- [IsZeroValue](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsZeroValue)
### 20. xerror package implements helpers for errors.
```go
import "github.com/duke-git/lancet/v2/xerror"
```
#### Function list:
- [Unwrap](https://github.com/duke-git/lancet/blob/main/docs/xerror.md#Unwrap)
## How to Contribute
I really appreciate any code commits which make lancet lib powerful. Please follow the rules below to create your pull request.
1. Fork the repository.
2. Create your feature branch.
3. Commit your changes.
4. Push to the branch
5. Create new pull request.
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