doc: normalize documents

README.md

@@ -1,5 +1,5 @@
 <div align=center>
-<a href="https://uvdream.github.io/lancet-docs/en/"><img src="./logo.png" width="200" height="200"/></a>
+<img src="./logo.png" width="200" height="200"/>
 
 <br/>
 
@@ -113,6 +113,7 @@ import "github.com/duke-git/lancet/v2/algorithm"
     [[play](https://go.dev/play/p/Anozfr8ZLH3)]
 -   **<big>LinearSearch</big>** : returns the index of target in slice base on equal function.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/algorithm.md#LinearSearch)]
+    [[play](https://go.dev/play/p/IsS7rgn5s3x)]
 -   **<big>LRUCache</big>** : implements memory cache with lru algorithm.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/algorithm.md#LRUCache)]
     [[play](https://go.dev/play/p/-EZjgOURufP)]
@@ -127,24 +128,34 @@ import "github.com/duke-git/lancet/v2/concurrency"
 
 -   **<big>NewChannel</big>** : create a Channel pointer instance.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#NewChannel)]
+    [[play](https://go.dev/play/p/7aB4KyMMp9A)]
 -   **<big>Bridge</big>** : link multiply channels into one channel.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/Bridge.md#NewChannel)]
+    [[play](https://go.dev/play/p/qmWSy1NVF-Y)]
 -   **<big>FanIn</big>** : merge multiple channels into one channel.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#FanIn)]
+    [[play](https://go.dev/play/p/2VYFMexEvTm)]
 -   **<big>Generate</big>** : creates a channel, then put values into the channel.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#Generate)]
+    [[play](https://go.dev/play/p/7aB4KyMMp9A)]
 -   **<big>Or</big>** : read one or more channels into one channel, will close when any readin channel is closed.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#Or)]
+    [[play](https://go.dev/play/p/Wqz9rwioPww)]
 -   **<big>OrDone</big>** : read a channel into another channel, will close until cancel context.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#OrDone)]
+    [[play](https://go.dev/play/p/lm_GoS6aDjo)]
 -   **<big>Repeat</big>** : create channel, put values into the channel repeatly until cancel the context.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#Repeat)]
+    [[play](https://go.dev/play/p/k5N_ALVmYjE)]
 -   **<big>RepeatFn</big>** : create a channel, excutes fn repeatly, and put the result into the channel, until close context.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#RepeatFn)]
+    [[play](https://go.dev/play/p/4J1zAWttP85)]
 -   **<big>Take</big>** : create a channel whose values are taken from another channel with limit number.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#Take)]
+    [[play](https://go.dev/play/p/9Utt-1pDr2J)]
 -   **<big>Tee</big>** : split one chanel into two channels, until cancel the context.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency.md#Tee)]
+    [[play](https://go.dev/play/p/3TQPKnCirrP)]
 
 ### 3. Condition package contains some functions for conditional judgment. eg. And, Or, TernaryOperator...
 
@@ -556,8 +567,10 @@ import "github.com/duke-git/lancet/v2/function"
     [[play](https://go.dev/play/p/0HqUDIFZ3IL)]
 -   **<big>CurryFn</big>** : make a curry function.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/function.md#CurryFn)]
+    [[play](https://go.dev/play/p/5HopfDwANKX)]
 -   **<big>Compose</big>** : compose the functions from right to left.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/function.md#Compose)]
+    [[play](https://go.dev/play/p/KKfugD4PKYF)]
 -   **<big>Delay</big>** : call the function after delayed time.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/function.md#Delay)]
     [[play](https://go.dev/play/p/Ivtc2ZE-Tye)]
@@ -572,6 +585,8 @@ import "github.com/duke-git/lancet/v2/function"
     [[play](https://go.dev/play/p/mPdUVvj6HD6)]
 -   **<big>Watcher</big>** : Watcher is used for record code excution time. can start/stop/reset the watch timer. get the elapsed time of function execution.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/function.md#Watcher)]
+    [[play](https://go.dev/play/p/l2yrOpCLd1I)]
+
 
 ### 11. Maputil package includes some functions to manipulate map.
 
@@ -640,6 +655,7 @@ import "github.com/duke-git/lancet/v2/mathutil"
     [[play](https://go.dev/play/p/N9qgYg_Ho6f)]
 -   **<big>Percent</big>** : calculate the percentage of value to total.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/mathutil.md#Percent)]
+    [[play](https://go.dev/play/p/QQM9B13coSP)]
 -   **<big>RoundToFloat</big>** : round up to n decimal places for float64.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/mathutil.md#RoundToFloat)]
     [[play](https://go.dev/play/p/ghyb528JRJL)]
@@ -1000,6 +1016,7 @@ import "github.com/duke-git/lancet/v2/strutil"
     [[play](https://go.dev/play/p/Us-ySSbWh-3)]
 -   **<big>Substring</big>** : returns a substring of the specific length starting at the specific offset position.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#Substring)]
+    [[play](https://go.dev/play/p/q3sM6ehnPDp)]
 -   **<big>Wrap</big>** : wrap a string with given string.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#Wrap)]
     [[play](https://go.dev/play/p/KoZOlZDDt9y)]

README_zh-CN.md

@@ -1,5 +1,5 @@
 <div align=center>
-<a href="https://uvdream.github.io/lancet-docs/"><img src="./logo.png" width="200" height="200"/><a/>
+<img src="./logo.png" width="200" height="200"/>
 
 <br/>
 
@@ -112,6 +112,7 @@ import "github.com/duke-git/lancet/v2/algorithm"
     [[play](https://go.dev/play/p/Anozfr8ZLH3)]
 -   **<big>LinearSearch</big>** : 基于传入的相等函数返回切片中目标值的索引。（线性查找）
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/algorithm_zh-CN.md#LinearSearch)]
+    [[play](https://go.dev/play/p/IsS7rgn5s3x)]
 -   **<big>LRUCache</big>** : 应用 lru 算法实现内存缓存.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/algorithm_zh-CN.md#LRUCache)]
     [[play](https://go.dev/play/p/-EZjgOURufP)]
@@ -126,24 +127,34 @@ import "github.com/duke-git/lancet/v2/concurrency"
 
 -   **<big>NewChannel</big>** : 返回一个 Channel 指针实例。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency_zh-CN.md#NewChannel)]
+    [[play](https://go.dev/play/p/7aB4KyMMp9A)]
 -   **<big>Bridge</big>** : 将多个 channel 链接到一个 channel，直到取消上下文。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/Bridge.md#NewChannel)]
+    [[play](https://go.dev/play/p/qmWSy1NVF-Y)]
 -   **<big>FanIn</big>** : 将多个 channel 合并为一个 channel，直到取消上下文。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency_zh-CN.md#FanIn)]
+    [[play](https://go.dev/play/p/2VYFMexEvTm)]
 -   **<big>Generate</big>** : 根据传入的值，生成 channel。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency_zh-CN.md#Generate)]
+    [[play](https://go.dev/play/p/7aB4KyMMp9A)]
 -   **<big>Or</big>** : 将一个或多个 channel 读取到一个 channel 中，当任何读取 channel 关闭时将结束读取。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency_zh-CN.md#Or)]
+    [[play](https://go.dev/play/p/Wqz9rwioPww)]
 -   **<big>OrDone</big>** : 将一个 channel 读入另一个 channel，直到取消上下文。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency_zh-CN.md#OrDone)]
+    [[play](https://go.dev/play/p/lm_GoS6aDjo)]
 -   **<big>Repeat</big>** : 返回一个 channel，将参数`values`重复放入 channel，直到取消上下文。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency_zh-CN.md#Repeat)]
+    [[play](https://go.dev/play/p/k5N_ALVmYjE)]
 -   **<big>RepeatFn</big>** : 返回一个 channel，重复执行函数 fn，并将结果放入返回的 channel，直到取消上下文。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency_zh-CN.md#RepeatFn)]
+    [[play](https://go.dev/play/p/4J1zAWttP85)]
 -   **<big>Take</big>** : 返回一个 channel，其值从另一个 channel 获取，直到取消上下文。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency_zh-CN.md#Take)]
+    [[play](https://go.dev/play/p/9Utt-1pDr2J)]
 -   **<big>Tee</big>** : 将一个 channel 分成两个 channel，直到取消上下文。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/concurrency_zh-CN.md#Tee)]
+    [[play](https://go.dev/play/p/3TQPKnCirrP)]
 
 ### 3. condition 包含一些用于条件判断的函数。
 
@@ -559,8 +570,10 @@ import "github.com/duke-git/lancet/v2/function"
     [[play](https://go.dev/play/p/0HqUDIFZ3IL)]
 -   **<big>CurryFn</big>** : 创建柯里化函数。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/function_zh-CN.md#CurryFn)]
+    [[play](https://go.dev/play/p/5HopfDwANKX)]
 -   **<big>Compose</big>** : 从右至左组合函数列表fnList，返回组合后的函数。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/function_zh-CN.md#Compose)]
+    [[play](https://go.dev/play/p/KKfugD4PKYF)]
 -   **<big>Delay</big>** : 延迟delay时间后调用函数。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/function_zh-CN.md#Delay)]
     [[play](https://go.dev/play/p/Ivtc2ZE-Tye)]
@@ -575,6 +588,7 @@ import "github.com/duke-git/lancet/v2/function"
     [[play](https://go.dev/play/p/mPdUVvj6HD6)]
 -   **<big>Watcher</big>** : Watcher用于记录代码执行时间。可以启动/停止/重置手表定时器。获取函数执行的时间。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/function_zh-CN.md#Watcher)]
+    [[play](https://go.dev/play/p/l2yrOpCLd1I)]
 
 
 ### 11. maputil 包括一些操作 map 的函数.
@@ -644,6 +658,7 @@ import "github.com/duke-git/lancet/v2/mathutil"
     [[play](https://go.dev/play/p/N9qgYg_Ho6f)]
 -   **<big>Percent</big>** : 计算百分比，可以指定保留 n 位小数。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/mathutil_zh-CN.md#Percent)]
+    [[play](https://go.dev/play/p/QQM9B13coSP)]
 -   **<big>RoundToFloat</big>** : 四舍五入，保留 n 位小数，返回 float64。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/mathutil_zh-CN.md#RoundToFloat)]
     [[play](https://go.dev/play/p/ghyb528JRJL)]
@@ -1010,6 +1025,7 @@ import "github.com/duke-git/lancet/v2/strutil"
     [[play](https://go.dev/play/p/Us-ySSbWh-3)]
 -   **<big>Substring</big>** : 根据指定的位置和长度截取子字符串。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/strutil.md#Substring)]
+    [[play](https://go.dev/play/p/q3sM6ehnPDp)]
 -   **<big>Wrap</big>** : 用给定字符包裹传入的字符串
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/strutil_zh-CN.md#Wrap)]
     [[play](https://go.dev/play/p/KoZOlZDDt9y)]
@@ -1160,7 +1176,6 @@ import "github.com/duke-git/lancet/v2/xerror"
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/xerror_zh-CN.md#Unwrap)]
     [[play](https://go.dev/play/p/w84d7Mb3Afk)]
 
--   [Unwrap](https://github.com/duke-git/lancet/blob/main/docs/xerror_zh-CN.md#Unwrap)
 
 ## 如何贡献代码
 

algorithm/search.go

@@ -10,7 +10,7 @@ import "github.com/duke-git/lancet/v2/lancetconstraints"
 
 // LinearSearch return the index of target in slice base on equal function.
 // If not found return -1
-// Play: Todo
+// Play: https://go.dev/play/p/IsS7rgn5s3x
 func LinearSearch[T any](slice []T, target T, equal func(a, b T) bool) int {
 	for i, v := range slice {
 		if equal(v, target) {

concurrency/channel.go

@@ -20,7 +20,7 @@ func NewChannel[T any]() *Channel[T] {
 }
 
 // Generate creates channel, then put values into the channel.
-// Play: Todo
+// Play: https://go.dev/play/p/7aB4KyMMp9A
 func (c *Channel[T]) Generate(ctx context.Context, values ...T) <-chan T {
 	dataStream := make(chan T)
 
@@ -40,7 +40,7 @@ func (c *Channel[T]) Generate(ctx context.Context, values ...T) <-chan T {
 }
 
 // Repeat create channel, put values into the channel repeatly until cancel the context.
-// Play: Todo
+// Play: https://go.dev/play/p/k5N_ALVmYjE
 func (c *Channel[T]) Repeat(ctx context.Context, values ...T) <-chan T {
 	dataStream := make(chan T)
 
@@ -61,7 +61,7 @@ func (c *Channel[T]) Repeat(ctx context.Context, values ...T) <-chan T {
 
 // RepeatFn create a channel, excutes fn repeatly, and put the result into the channel
 // until close context.
-// Play: Todo
+// Play: https://go.dev/play/p/4J1zAWttP85
 func (c *Channel[T]) RepeatFn(ctx context.Context, fn func() T) <-chan T {
 	dataStream := make(chan T)
 
@@ -79,7 +79,7 @@ func (c *Channel[T]) RepeatFn(ctx context.Context, fn func() T) <-chan T {
 }
 
 // Take create a channel whose values are taken from another channel with limit number.
-// Play: Todo
+// Play: https://go.dev/play/p/9Utt-1pDr2J
 func (c *Channel[T]) Take(ctx context.Context, valueStream <-chan T, number int) <-chan T {
 	takeStream := make(chan T)
 
@@ -99,7 +99,7 @@ func (c *Channel[T]) Take(ctx context.Context, valueStream <-chan T, number int)
 }
 
 // FanIn merge multiple channels into one channel.
-// Play: Todo
+// Play: https://go.dev/play/p/2VYFMexEvTm
 func (c *Channel[T]) FanIn(ctx context.Context, channels ...<-chan T) <-chan T {
 	out := make(chan T)
 
@@ -127,7 +127,7 @@ func (c *Channel[T]) FanIn(ctx context.Context, channels ...<-chan T) <-chan T {
 }
 
 // Tee split one chanel into two channels, until cancel the context.
-// Play: Todo
+// Play: https://go.dev/play/p/3TQPKnCirrP
 func (c *Channel[T]) Tee(ctx context.Context, in <-chan T) (<-chan T, <-chan T) {
 	out1 := make(chan T)
 	out2 := make(chan T)
@@ -154,7 +154,7 @@ func (c *Channel[T]) Tee(ctx context.Context, in <-chan T) (<-chan T, <-chan T)
 }
 
 // Bridge link multiply channels into one channel.
-// Play: Todo
+// Play: https://go.dev/play/p/qmWSy1NVF-Y
 func (c *Channel[T]) Bridge(ctx context.Context, chanStream <-chan <-chan T) <-chan T {
 	valStream := make(chan T)
 
@@ -186,7 +186,7 @@ func (c *Channel[T]) Bridge(ctx context.Context, chanStream <-chan <-chan T) <-c
 }
 
 // Or read one or more channels into one channel, will close when any readin channel is closed.
-// Play: Todo
+// Play: https://go.dev/play/p/Wqz9rwioPww
 func (c *Channel[T]) Or(channels ...<-chan T) <-chan T {
 	switch len(channels) {
 	case 0:
@@ -220,7 +220,7 @@ func (c *Channel[T]) Or(channels ...<-chan T) <-chan T {
 }
 
 // OrDone read a channel into another channel, will close until cancel context.
-// Play: Todo
+// Play: https://go.dev/play/p/lm_GoS6aDjo
 func (c *Channel[T]) OrDone(ctx context.Context, channel <-chan T) <-chan T {
 	valStream := make(chan T)
 

docs/algorithm.md

@@ -1,17 +1,19 @@
 # Algorithm
+
 Package algorithm implements some basic algorithm. eg. sort, search.
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Source
 
-- [https://github.com/duke-git/lancet/blob/main/algorithm/sort.go](https://github.com/duke-git/lancet/blob/main/algorithm/sort.go)
+-   [https://github.com/duke-git/lancet/blob/main/algorithm/sort.go](https://github.com/duke-git/lancet/blob/main/algorithm/sort.go)
-- [https://github.com/duke-git/lancet/blob/main/algorithm/search.go](https://github.com/duke-git/lancet/blob/main/algorithm/search.go)
+-   [https://github.com/duke-git/lancet/blob/main/algorithm/search.go](https://github.com/duke-git/lancet/blob/main/algorithm/search.go)
-- [https://github.com/duke-git/lancet/blob/main/algorithm/lru_cache.go](https://github.com/duke-git/lancet/blob/main/algorithm/lru_cache.go)
+-   [https://github.com/duke-git/lancet/blob/main/algorithm/lru_cache.go](https://github.com/duke-git/lancet/blob/main/algorithm/lru_cache.go)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Usage
+
 ```go
 import (
     "github.com/duke-git/lancet/v2/algorithm"
@@ -22,27 +24,25 @@ import (
 
 ## Index
 
-- [BubbleSort](#BubbleSort)
+-   [BubbleSort](#BubbleSort)
-- [InsertionSort](#InsertionSort)
+-   [InsertionSort](#InsertionSort)
-- [SelectionSort](#SelectionSort)
+-   [SelectionSort](#SelectionSort)
-- [ShellSort](#ShellSort)
+-   [ShellSort](#ShellSort)
-- [QuickSort](#QuickSort)
+-   [QuickSort](#QuickSort)
-- [HeapSort](#HeapSort)
+-   [HeapSort](#HeapSort)
-- [MergeSort](#MergeSort)
+-   [MergeSort](#MergeSort)
-- [CountSort](#CountSort)
+-   [CountSort](#CountSort)
-- [BinarySearch](#BinarySearch)
+-   [BinarySearch](#BinarySearch)
-- [BinaryIterativeSearch](#BinaryIterativeSearch)
+-   [BinaryIterativeSearch](#BinaryIterativeSearch)
-- [LinearSearch](#LinearSearch)
+-   [LinearSearch](#LinearSearch)
-- [LRUCache](#LRUCache)
+-   [LRUCache](#LRUCache)
-
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Documentation
 
-
-
 ### <span id="BubbleSort">BubbleSort</span>
+
 <p>Sort slice with bubble sort algorithm. Param comparator should implements lancetconstraints.Comparator.</p>
 
 <b>Signature:</b>
@@ -50,6 +50,7 @@ import (
 ```go
 func BubbleSort[T any](slice []T, comparator lancetconstraints.Comparator)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -60,34 +61,36 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
+type intComparator struct{}
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
+    val1, _ := v1.(int)
-        val2, _ := v2.(int)
+    val2, _ := v2.(int)
 
-        //ascending order
+    //ascending order
-        if val1 < val2 {
+    if val1 < val2 {
-            return -1
+        return -1
-        } else if val1 > val2 {
+    } else if val1 > val2 {
-            return 1
+        return 1
-        }
-        return 0
     }
+    return 0
+}
 
-    intSlice := []int{2, 1, 5, 3, 6, 4}
+func main() {
+    numbers := []int{2, 1, 5, 3, 6, 4}
     comparator := &intComparator{}
-    algorithm.BubbleSort(intSlice, comparator)
 
-    fmt.Println(intSlice) //[]int{1, 2, 3, 4, 5, 6}
+    algorithm.BubbleSort(numbers, comparator)
+
+    fmt.Println(numbers)
+
+    // Output:
+    // [1 2 3 4 5 6]
 }
 ```
 
-
-
-
 ### <span id="InsertionSort">InsertionSort</span>
+
 <p>Sort slice with insertion sort algorithm. Param comparator should implements lancetconstraints.Comparator.</p>
 
 <b>Signature:</b>
@@ -95,6 +98,7 @@ func main() {
 ```go
 func InsertionSort[T any](slice []T, comparator lancetconstraints.Comparator)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -105,54 +109,51 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
+type people struct {
+    Name string
+    Age  int
+}
+
+// PeopleAageComparator sort people slice by age field
+type peopleAgeComparator struct{}
+
+// Compare implements github.com/duke-git/lancet/lancetconstraints/constraints.go/Comparator
+func (pc *peopleAgeComparator) Compare(v1 any, v2 any) int {
+    p1, _ := v1.(people)
+    p2, _ := v2.(people)
+
+    //ascending order
+    if p1.Age < p2.Age {
+        return -1
+    } else if p1.Age > p2.Age {
+        return 1
+    }
+
+    return 0
+}
+
 func main() {
-    type people struct {
+    peoples := []people{
-        Name string
-        Age  int
-    }
-
-    // PeopleAageComparator sort people slice by age field
-    type peopleAgeComparator struct{}
-
-    // Compare implements github.com/duke-git/lancet/lancetconstraints/constraints.go/Comparator
-    func (pc *peopleAgeComparator) Compare(v1 any, v2 any) int {
-        p1, _ := v1.(people)
-        p2, _ := v2.(people)
-
-        //ascending order
-        if p1.Age < p2.Age {
-            return -1
-        } else if p1.Age > p2.Age {
-            return 1
-        }
-        return 0
-
-        //decending order
-        // if p1.Age > p2.Age {
-        // 	return -1
-        // } else if p1.Age < p2.Age {
-        // 	return 1
-        // }
-    }
-
-    var peoples = []people{
         {Name: "a", Age: 20},
         {Name: "b", Age: 10},
         {Name: "c", Age: 17},
         {Name: "d", Age: 8},
         {Name: "e", Age: 28},
     }
+
     comparator := &peopleAgeComparator{}
+
     algorithm.InsertionSort(peoples, comparator)
 
-    fmt.Println(peoples) //[{d 8} {b 10} {c 17} {a 20} {e 28}]
+    fmt.Println(peoples)
+
+    // Output:
+    // [{d 8} {b 10} {c 17} {a 20} {e 28}]
 }
 ```
 
-
-
-
 ### <span id="SelectionSort">SelectionSort</span>
+
 <p>Sort slice with selection sort algorithm. Param comparator should implements lancetconstraints.Comparator.</p>
 
 <b>Signature:</b>
@@ -160,6 +161,7 @@ func main() {
 ```go
 func SelectionSort[T any](slice []T, comparator lancetconstraints.Comparator)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -170,34 +172,36 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
+type intComparator struct{}
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
+    val1, _ := v1.(int)
-        val2, _ := v2.(int)
+    val2, _ := v2.(int)
 
-        //ascending order
+    //ascending order
-        if val1 < val2 {
+    if val1 < val2 {
-            return -1
+        return -1
-        } else if val1 > val2 {
+    } else if val1 > val2 {
-            return 1
+        return 1
-        }
-        return 0
     }
+    return 0
+}
 
-    intSlice := []int{2, 1, 5, 3, 6, 4}
+func main() {
+    numbers := []int{2, 1, 5, 3, 6, 4}
     comparator := &intComparator{}
-    algorithm.SelectionSort(intSlice, comparator)
 
-    fmt.Println(intSlice) //[]int{1, 2, 3, 4, 5, 6}
+    algorithm.SelectionSort(numbers, comparator)
+
+    fmt.Println(numbers)
+
+    // Output:
+    // [1 2 3 4 5 6]
 }
 ```
 
-
-
-
 ### <span id="ShellSort">ShellSort</span>
+
 <p>Sort slice with shell sort algorithm. Param comparator should implements lancetconstraints.Comparator.</p>
 
 <b>Signature:</b>
@@ -205,6 +209,7 @@ func main() {
 ```go
 func ShellSort[T any](slice []T, comparator lancetconstraints.Comparator)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -215,34 +220,36 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
+type intComparator struct{}
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
+    val1, _ := v1.(int)
-        val2, _ := v2.(int)
+    val2, _ := v2.(int)
 
-        //ascending order
+    //ascending order
-        if val1 < val2 {
+    if val1 < val2 {
-            return -1
+        return -1
-        } else if val1 > val2 {
+    } else if val1 > val2 {
-            return 1
+        return 1
-        }
-        return 0
     }
+    return 0
+}
 
-    intSlice := []int{2, 1, 5, 3, 6, 4}
+func main() {
+    numbers := []int{2, 1, 5, 3, 6, 4}
     comparator := &intComparator{}
-    algorithm.ShellSort(intSlice, comparator)
 
-    fmt.Println(intSlice) //[]int{1, 2, 3, 4, 5, 6}
+    algorithm.ShellSort(numbers, comparator)
+
+    fmt.Println(numbers)
+
+    // Output:
+    // [1 2 3 4 5 6]
 }
 ```
 
-
-
-
 ### <span id="QuickSort">QuickSort</span>
+
 <p>Sort slice with quick sort algorithm. Param comparator should implements lancetconstraints.Comparator.</p>
 
 <b>Signature:</b>
@@ -250,6 +257,7 @@ func main() {
 ```go
 func QuickSort[T any](slice []T comparator lancetconstraints.Comparator)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -260,34 +268,36 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
+type intComparator struct{}
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
+    val1, _ := v1.(int)
-        val2, _ := v2.(int)
+    val2, _ := v2.(int)
 
-        //ascending order
+    //ascending order
-        if val1 < val2 {
+    if val1 < val2 {
-            return -1
+        return -1
-        } else if val1 > val2 {
+    } else if val1 > val2 {
-            return 1
+        return 1
-        }
-        return 0
     }
+    return 0
+}
 
-    intSlice := []int{2, 1, 5, 3, 6, 4}
+func main() {
+    numbers := []int{2, 1, 5, 3, 6, 4}
     comparator := &intComparator{}
-    algorithm.QuickSort(intSlice, comparator)
 
-    fmt.Println(intSlice) //[]int{1, 2, 3, 4, 5, 6}
+    algorithm.QuickSort(numbers, comparator)
+
+    fmt.Println(numbers)
+
+    // Output:
+    // [1 2 3 4 5 6]
 }
 ```
 
-
-
-
 ### <span id="HeapSort">HeapSort</span>
+
 <p>Sort slice with heap sort algorithm. Param comparator should implements lancetconstraints.Comparator.</p>
 
 <b>Signature:</b>
@@ -295,6 +305,7 @@ func main() {
 ```go
 func HeapSort[T any](slice []T, comparator lancetconstraints.Comparator)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -305,34 +316,36 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
+type intComparator struct{}
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
+    val1, _ := v1.(int)
-        val2, _ := v2.(int)
+    val2, _ := v2.(int)
 
-        //ascending order
+    //ascending order
-        if val1 < val2 {
+    if val1 < val2 {
-            return -1
+        return -1
-        } else if val1 > val2 {
+    } else if val1 > val2 {
-            return 1
+        return 1
-        }
-        return 0
     }
+    return 0
+}
 
-    intSlice := []int{2, 1, 5, 3, 6, 4}
+func main() {
+    numbers := []int{2, 1, 5, 3, 6, 4}
     comparator := &intComparator{}
-    algorithm.HeapSort(intSlice, comparator)
 
-    fmt.Println(intSlice) //[]int{1, 2, 3, 4, 5, 6}
+    algorithm.HeapSort(numbers, comparator)
+
+    fmt.Println(numbers)
+
+    // Output:
+    // [1 2 3 4 5 6]
 }
 ```
 
-
-
-
 ### <span id="MergeSort">MergeSort</span>
+
 <p>Sort slice with merge sort algorithm. Param comparator should implements lancetconstraints.Comparator.</p>
 
 <b>Signature:</b>
@@ -340,6 +353,7 @@ func main() {
 ```go
 func MergeSort[T any](slice []T, comparator lancetconstraints.Comparator)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -350,33 +364,36 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
+type intComparator struct{}
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
+    val1, _ := v1.(int)
-        val2, _ := v2.(int)
+    val2, _ := v2.(int)
 
-        //ascending order
+    //ascending order
-        if val1 < val2 {
+    if val1 < val2 {
-            return -1
+        return -1
-        } else if val1 > val2 {
+    } else if val1 > val2 {
-            return 1
+        return 1
-        }
-        return 0
     }
+    return 0
+}
 
-    intSlice := []int{2, 1, 5, 3, 6, 4}
+func main() {
+    numbers := []int{2, 1, 5, 3, 6, 4}
     comparator := &intComparator{}
-    algorithm.MergeSort(intSlice, comparator)
 
-    fmt.Println(intSlice) //[]int{1, 2, 3, 4, 5, 6}
+    algorithm.MergeSort(numbers, comparator)
+
+    fmt.Println(numbers)
+
+    // Output:
+    // [1 2 3 4 5 6]
 }
 ```
 
-
-
 ### <span id="CountSort">CountSort</span>
+
 <p>Sort slice with count sort algorithm. Param comparator should implements lancetconstraints.Comparator.</p>
 
 <b>Signature:</b>
@@ -384,6 +401,7 @@ func main() {
 ```go
 func CountSort[T any](slice []T, comparator lancetconstraints.Comparator) []T
 ```
+
 <b>Example:</b>
 
 ```go
@@ -394,34 +412,37 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+type intComparator struct{}
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
 
-        //ascending order
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        if val1 < val2 {
+    val1, _ := v1.(int)
-            return -1
+    val2, _ := v2.(int)
-        } else if val1 > val2 {
+
-            return 1
+    //ascending order
-        }
+    if val1 < val2 {
-        return 0
+        return -1
+    } else if val1 > val2 {
+        return 1
     }
+    return 0
+}
 
-    intSlice := []int{2, 1, 5, 3, 6, 4}
+func main() {
+    numbers := []int{2, 1, 5, 3, 6, 4}
     comparator := &intComparator{}
-    sortedSlice := algorithm.CountSort(intSlice, comparator)
 
-    fmt.Println(sortedSlice) //[]int{1, 2, 3, 4, 5, 6}
+    sortedNums := algorithm.CountSort(numbers, comparator)
+
+    fmt.Println(sortedNums)
+
+    // Output:
+    // [1 2 3 4 5 6]
 }
 ```
 
-
-
-
 ### <span id="BinarySearch">BinarySearch</span>
+
 <p>BinarySearch search for target within a sorted slice, recursive call itself. If a target is found, the index of the target is returned. Else the function return -1.</p>
 
 <b>Signature:</b>
@@ -429,6 +450,7 @@ func main() {
 ```go
 func BinarySearch[T any](sortedSlice []T, target T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) int
 ```
+
 <b>Example:</b>
 
 ```go
@@ -439,35 +461,39 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
+type intComparator struct{}
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
+    val1, _ := v1.(int)
-        val2, _ := v2.(int)
+    val2, _ := v2.(int)
 
-        //ascending order
+    //ascending order
-        if val1 < val2 {
+    if val1 < val2 {
-            return -1
+        return -1
-        } else if val1 > val2 {
+    } else if val1 > val2 {
-            return 1
+        return 1
-        }
-        return 0
     }
+    return 0
+}
 
-    var sortedNumbers = []int{1, 2, 3, 4, 5, 6, 7, 8}
+func main() {
+    numbers := []int{1, 2, 3, 4, 5, 6, 7, 8}
     comparator := &intComparator{}
-    foundIndex := algorithm.BinarySearch(sortedNumbers, 5, 0, len(sortedNumbers)-1, comparator)
-    fmt.Println(foundIndex) //4
 
-    notFoundIndex := algorithm.BinarySearch(sortedNumbers, 9, 0, len(sortedNumbers)-1, comparator)
+    result1 := algorithm.BinarySearch(numbers, 5, 0, len(numbers)-1, comparator)
-    fmt.Println(notFoundIndex) //-1
+    result2 := algorithm.BinarySearch(numbers, 9, 0, len(numbers)-1, comparator)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // 4
+    // -1
 }
 ```
 
-
-
 ### <span id="BinaryIterativeSearch">BinaryIterativeSearch</span>
+
 <p>BinaryIterativeSearch search for target within a sorted slice, recursive call itself. If a target is found, the index of the target is returned. Else the function return -1.</p>
 
 <b>Signature:</b>
@@ -475,6 +501,7 @@ func main() {
 ```go
 func BinaryIterativeSearch[T any](sortedSlice []T, target T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) int
 ```
+
 <b>Example:</b>
 
 ```go
@@ -485,43 +512,47 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
+type intComparator struct{}
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
+    val1, _ := v1.(int)
-        val2, _ := v2.(int)
+    val2, _ := v2.(int)
 
-        //ascending order
+    //ascending order
-        if val1 < val2 {
+    if val1 < val2 {
-            return -1
+        return -1
-        } else if val1 > val2 {
+    } else if val1 > val2 {
-            return 1
+        return 1
-        }
-        return 0
     }
+    return 0
+}
 
-    var sortedNumbers = []int{1, 2, 3, 4, 5, 6, 7, 8}
+func main() {
+    numbers := []int{1, 2, 3, 4, 5, 6, 7, 8}
     comparator := &intComparator{}
-    foundIndex := algorithm.BinaryIterativeSearch(sortedNumbers, 5, 0, len(sortedNumbers)-1, comparator)
-    fmt.Println(foundIndex) //4
 
-    notFoundIndex := algorithm.BinaryIterativeSearch(sortedNumbers, 9, 0, len(sortedNumbers)-1, comparator)
+    result1 := algorithm.BinaryIterativeSearch(numbers, 5, 0, len(numbers)-1, comparator)
-    fmt.Println(notFoundIndex) //-1
+    result2 := algorithm.BinaryIterativeSearch(numbers, 9, 0, len(numbers)-1, comparator)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // 4
+    // -1
 }
 ```
 
-
-
-
 ### <span id="LinearSearch">LinearSearch</span>
-<p>LinearSearch Simple linear search algorithm that iterates over all elements of an slice. If a target is found, the index of the target is returned. Else the function return -1.</p>
+
+<p>return the index of target in slice base on equal function.If a target is found, the index of the target is returned. Else the function return -1.</p>
 
 <b>Signature:</b>
 
 ```go
-func LinearSearch[T any](slice []T, target T, comparator lancetconstraints.Comparator) int
+func LinearSearch[T any](slice []T, target T, equal func(a, b T) bool) int
 ```
+
 <b>Example:</b>
 
 ```go
@@ -533,35 +564,26 @@ import (
 )
 
 func main() {
-    type intComparator struct{}
+    numbers := []int{3, 4, 5, 3, 2, 1}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+    equalFunc := func(a, b int) bool {
-        val1, _ := v1.(int)
+        return a == b
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
     }
 
-    intSlice := []int{2, 1, 5, 3, 6, 4}
+    result1 := algorithm.LinearSearch(numbers, 3, equalFunc)
-    comparator := &intComparator{}
+    result2 := algorithm.LinearSearch(numbers, 6, equalFunc)
-    foundIndex := algorithm.LinearSearch(intSlice, 5, comparator)
-    fmt.Println(foundIndex) //2
 
-    notFoundIndex := algorithm.LinearSearch(sortedNumbers, 0, comparator)
+    fmt.Println(result1)
-    fmt.Println(notFoundIndex) //-1
+    fmt.Println(result2)
+
+    // Output:
+    // 0
+    // -1
 }
 ```
 
-
-
-
 ### <span id="LRUCache">LRUCache</span>
+
 <p>LRUCache implements mem cache with lru.</p>
 
 <b>Signature:</b>
@@ -573,6 +595,7 @@ func (l *LRUCache[K, V]) Put(key K, value V)
 func (l *LRUCache[K, V]) Delete(key K) bool
 func (l *LRUCache[K, V]) Len() int
 ```
+
 <b>Example:</b>
 
 ```go
@@ -588,14 +611,26 @@ func main() {
 
     cache.Put(1, 1)
     cache.Put(2, 2)
-    cache.Put(3, 3)
 
-    fmt.Println(cache.Len()) // 3
+    result1, ok1 := cache.Get(1)
+    result2, ok2 := cache.Get(2)
+    result3, ok3 := cache.Get(3)
 
-    v, ok := cache.Get(1)
+    fmt.Println(result1, ok1)
-    fmt.Println(v, ok) // 1 true
+    fmt.Println(result2, ok2)
+    fmt.Println(result3, ok3)
 
-    ok = cache.Delete(1)
+    fmt.Println(cache.Len())
-    fmt.Println(ok) // true
+
+    ok := cache.Delete(2)
+    fmt.Println(ok)
+
+
+    // Output:
+    // 1 true
+    // 2 true
+    // 0 false
+    // 2
+    // true
 }
-```
+```

docs/algorithm_zh-CN.md

@@ -1,17 +1,19 @@
 # Algorithm
-algorithm算法包实现一些基本算法，sort，search，lrucache。
+
+algorithm 算法包实现一些基本算法，sort，search，lrucache。
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 源码
 
-- [https://github.com/duke-git/lancet/blob/main/algorithm/sort.go](https://github.com/duke-git/lancet/blob/main/algorithm/sort.go)
+-   [https://github.com/duke-git/lancet/blob/main/algorithm/sort.go](https://github.com/duke-git/lancet/blob/main/algorithm/sort.go)
-- [https://github.com/duke-git/lancet/blob/main/algorithm/search.go](https://github.com/duke-git/lancet/blob/main/algorithm/search.go)
+-   [https://github.com/duke-git/lancet/blob/main/algorithm/search.go](https://github.com/duke-git/lancet/blob/main/algorithm/search.go)
-- [https://github.com/duke-git/lancet/blob/main/algorithm/lru_cache.go](https://github.com/duke-git/lancet/blob/main/algorithm/lru_cache.go)
+-   [https://github.com/duke-git/lancet/blob/main/algorithm/lru_cache.go](https://github.com/duke-git/lancet/blob/main/algorithm/lru_cache.go)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 用法
+
 ```go
 import (
     "github.com/duke-git/lancet/v2/algorithm"
@@ -22,35 +24,34 @@ import (
 
 ## 目录
 
-- [BubbleSort](#BubbleSort)
+-   [BubbleSort](#BubbleSort)
-- [InsertionSort](#InsertionSort)
+-   [InsertionSort](#InsertionSort)
-- [SelectionSort](#SelectionSort)
+-   [SelectionSort](#SelectionSort)
-- [ShellSort](#ShellSort)
+-   [ShellSort](#ShellSort)
-- [QuickSort](#QuickSort)
+-   [QuickSort](#QuickSort)
-- [HeapSort](#HeapSort)
+-   [HeapSort](#HeapSort)
-- [MergeSort](#MergeSort)
+-   [MergeSort](#MergeSort)
-- [CountSort](#CountSort)
+-   [CountSort](#CountSort)
-- [BinarySearch](#BinarySearch)
+-   [BinarySearch](#BinarySearch)
-- [BinaryIterativeSearch](#BinaryIterativeSearch)
+-   [BinaryIterativeSearch](#BinaryIterativeSearch)
-- [LinearSearch](#LinearSearch)
+-   [LinearSearch](#LinearSearch)
-- [LRUCache](#LRUCache)
+-   [LRUCache](#LRUCache)
-
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 文档
 
-
-
 ### <span id="BubbleSort">BubbleSort</span>
-<p>冒泡排序，参数comparator需要实现包lancetconstraints.Comparator</p>
+
+<p>冒泡排序，参数comparator需要实现包lancetconstraints.Comparator。</p>
 
 <b>函数签名:</b>
 
 ```go
 func BubbleSort[T any](slice []T, comparator lancetconstraints.Comparator)
 ```
-<b>Example:</b>
+
+<b>示例:</b>
 
 ```go
 package main
@@ -60,42 +61,45 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
+type intComparator struct{}
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
+    val1, _ := v1.(int)
-        val2, _ := v2.(int)
+    val2, _ := v2.(int)
 
-        //ascending order
+    //ascending order
-        if val1 < val2 {
+    if val1 < val2 {
-            return -1
+        return -1
-        } else if val1 > val2 {
+    } else if val1 > val2 {
-            return 1
+        return 1
-        }
-        return 0
     }
+    return 0
+}
 
-    intSlice := []int{2, 1, 5, 3, 6, 4}
+func main() {
+    numbers := []int{2, 1, 5, 3, 6, 4}
     comparator := &intComparator{}
-    algorithm.BubbleSort(intSlice, comparator)
 
-    fmt.Println(intSlice) //[]int{1, 2, 3, 4, 5, 6}
+    algorithm.BubbleSort(numbers, comparator)
+
+    fmt.Println(numbers)
+
+    // Output:
+    // [1 2 3 4 5 6]
 }
 ```
 
-
-
-
 ### <span id="InsertionSort">InsertionSort</span>
-<p>插入排序，参数comparator需要实现包lancetconstraints.Comparator</p>
+
+<p>插入排序，参数comparator需要实现包lancetconstraints.Comparator。</p>
 
 <b>函数签名:</b>
 
 ```go
 func InsertionSort[T any](slice []T, comparator lancetconstraints.Comparator)
 ```
-<b>Example:</b>
+
+<b>示例:</b>
 
 ```go
 package main
@@ -105,62 +109,60 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
+type people struct {
+    Name string
+    Age  int
+}
+
+// PeopleAageComparator sort people slice by age field
+type peopleAgeComparator struct{}
+
+// Compare implements github.com/duke-git/lancet/lancetconstraints/constraints.go/Comparator
+func (pc *peopleAgeComparator) Compare(v1 any, v2 any) int {
+    p1, _ := v1.(people)
+    p2, _ := v2.(people)
+
+    //ascending order
+    if p1.Age < p2.Age {
+        return -1
+    } else if p1.Age > p2.Age {
+        return 1
+    }
+
+    return 0
+}
+
 func main() {
-    type people struct {
+    peoples := []people{
-        Name string
-        Age  int
-    }
-
-    // PeopleAageComparator sort people slice by age field
-    type peopleAgeComparator struct{}
-
-    // Compare implements github.com/duke-git/lancet/lancetconstraints/constraints.go/Comparator
-    func (pc *peopleAgeComparator) Compare(v1 any, v2 any) int {
-        p1, _ := v1.(people)
-        p2, _ := v2.(people)
-
-        //ascending order
-        if p1.Age < p2.Age {
-            return -1
-        } else if p1.Age > p2.Age {
-            return 1
-        }
-        return 0
-
-        //decending order
-        // if p1.Age > p2.Age {
-        // 	return -1
-        // } else if p1.Age < p2.Age {
-        // 	return 1
-        // }
-    }
-
-    var peoples = []people{
         {Name: "a", Age: 20},
         {Name: "b", Age: 10},
         {Name: "c", Age: 17},
         {Name: "d", Age: 8},
         {Name: "e", Age: 28},
     }
+
     comparator := &peopleAgeComparator{}
+
     algorithm.InsertionSort(peoples, comparator)
 
-    fmt.Println(intSlice) //[{d 8} {b 10} {c 17} {a 20} {e 28}]
+    fmt.Println(peoples)
+
+    // Output:
+    // [{d 8} {b 10} {c 17} {a 20} {e 28}]
 }
 ```
 
-
-
-
 ### <span id="SelectionSort">SelectionSort</span>
-<p>选择排序，参数comparator需要实现包lancetconstraints.Comparator</p>
+
+<p>选择排序，参数comparator需要实现包lancetconstraints.Comparator。</p>
 
 <b>函数签名:</b>
 
 ```go
 func SelectionSort[T any](slice []T, comparator lancetconstraints.Comparator)
 ```
-<b>Example:</b>
+
+<b>示例:</b>
 
 ```go
 package main
@@ -170,42 +172,45 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
+type intComparator struct{}
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
+    val1, _ := v1.(int)
-        val2, _ := v2.(int)
+    val2, _ := v2.(int)
 
-        //ascending order
+    //ascending order
-        if val1 < val2 {
+    if val1 < val2 {
-            return -1
+        return -1
-        } else if val1 > val2 {
+    } else if val1 > val2 {
-            return 1
+        return 1
-        }
-        return 0
     }
+    return 0
+}
 
-    intSlice := []int{2, 1, 5, 3, 6, 4}
+func main() {
+    numbers := []int{2, 1, 5, 3, 6, 4}
     comparator := &intComparator{}
-    algorithm.SelectionSort(intSlice, comparator)
 
-    fmt.Println(intSlice) //[]int{1, 2, 3, 4, 5, 6}
+    algorithm.SelectionSort(numbers, comparator)
+
+    fmt.Println(numbers)
+
+    // Output:
+    // [1 2 3 4 5 6]
 }
 ```
 
-
-
-
 ### <span id="ShellSort">ShellSort</span>
-<p>希尔排序，参数comparator需要实现包lancetconstraints.Comparator</p>
+
+<p>希尔排序，参数comparator需要实现包lancetconstraints.Comparator。</p>
 
 <b>函数签名:</b>
 
 ```go
 func ShellSort[T any](slice []T, comparator lancetconstraints.Comparator)
 ```
-<b>Example:</b>
+
+<b>示例:</b>
 
 ```go
 package main
@@ -215,42 +220,45 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
+type intComparator struct{}
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
+    val1, _ := v1.(int)
-        val2, _ := v2.(int)
+    val2, _ := v2.(int)
 
-        //ascending order
+    //ascending order
-        if val1 < val2 {
+    if val1 < val2 {
-            return -1
+        return -1
-        } else if val1 > val2 {
+    } else if val1 > val2 {
-            return 1
+        return 1
-        }
-        return 0
     }
+    return 0
+}
 
-    intSlice := []int{2, 1, 5, 3, 6, 4}
+func main() {
+    numbers := []int{2, 1, 5, 3, 6, 4}
     comparator := &intComparator{}
-    algorithm.ShellSort(intSlice, comparator)
 
-    fmt.Println(intSlice) //[]int{1, 2, 3, 4, 5, 6}
+    algorithm.ShellSort(numbers, comparator)
+
+    fmt.Println(numbers)
+
+    // Output:
+    // [1 2 3 4 5 6]
 }
 ```
 
-
-
-
 ### <span id="QuickSort">QuickSort</span>
-<p>快速排序，参数comparator需要实现包lancetconstraints.Comparator</p>
+
+<p>快速排序，参数comparator需要实现包lancetconstraints.Comparator。</p>
 
 <b>函数签名:</b>
 
 ```go
-func QuickSort[T any](slice []T, comparator lancetconstraints.Comparator) []T
+func QuickSort[T any](slice []T comparator lancetconstraints.Comparator)
 ```
-<b>Example:</b>
+
+<b>示例:</b>
 
 ```go
 package main
@@ -260,42 +268,45 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
+type intComparator struct{}
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
+    val1, _ := v1.(int)
-        val2, _ := v2.(int)
+    val2, _ := v2.(int)
 
-        //ascending order
+    //ascending order
-        if val1 < val2 {
+    if val1 < val2 {
-            return -1
+        return -1
-        } else if val1 > val2 {
+    } else if val1 > val2 {
-            return 1
+        return 1
-        }
-        return 0
     }
+    return 0
+}
 
-    intSlice := []int{2, 1, 5, 3, 6, 4}
+func main() {
+    numbers := []int{2, 1, 5, 3, 6, 4}
     comparator := &intComparator{}
-    algorithm.QuickSort(intSlice, comparator)
 
-    fmt.Println(intSlice) //[]int{1, 2, 3, 4, 5, 6}
+    algorithm.QuickSort(numbers, comparator)
+
+    fmt.Println(numbers)
+
+    // Output:
+    // [1 2 3 4 5 6]
 }
 ```
 
-
-
-
 ### <span id="HeapSort">HeapSort</span>
-<p>堆排序，参数comparator需要实现包lancetconstraints.Comparator</p>
+
+<p>堆排序，参数comparator需要实现包lancetconstraints.Comparator。</p>
 
 <b>函数签名:</b>
 
 ```go
-func HeapSort[T any](slice []T, comparator lancetconstraints.Comparator) []T
+func HeapSort[T any](slice []T, comparator lancetconstraints.Comparator)
 ```
-<b>Example:</b>
+
+<b>示例:</b>
 
 ```go
 package main
@@ -305,42 +316,45 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
+type intComparator struct{}
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
+    val1, _ := v1.(int)
-        val2, _ := v2.(int)
+    val2, _ := v2.(int)
 
-        //ascending order
+    //ascending order
-        if val1 < val2 {
+    if val1 < val2 {
-            return -1
+        return -1
-        } else if val1 > val2 {
+    } else if val1 > val2 {
-            return 1
+        return 1
-        }
-        return 0
     }
+    return 0
+}
 
-    intSlice := []int{2, 1, 5, 3, 6, 4}
+func main() {
+    numbers := []int{2, 1, 5, 3, 6, 4}
     comparator := &intComparator{}
-    algorithm.HeapSort(intSlice, comparator)
 
-    fmt.Println(intSlice) //[]int{1, 2, 3, 4, 5, 6}
+    algorithm.HeapSort(numbers, comparator)
+
+    fmt.Println(numbers)
+
+    // Output:
+    // [1 2 3 4 5 6]
 }
 ```
 
-
-
-
 ### <span id="MergeSort">MergeSort</span>
-<p>归并排序，参数comparator需要实现包lancetconstraints.Comparator</p>
+
+<p>归并排序，参数comparator需要实现包lancetconstraints.Comparator。</p>
 
 <b>函数签名:</b>
 
 ```go
 func MergeSort[T any](slice []T, comparator lancetconstraints.Comparator)
 ```
-<b>Example:</b>
+
+<b>示例:</b>
 
 ```go
 package main
@@ -350,41 +364,45 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
+type intComparator struct{}
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
+    val1, _ := v1.(int)
-        val2, _ := v2.(int)
+    val2, _ := v2.(int)
 
-        //ascending order
+    //ascending order
-        if val1 < val2 {
+    if val1 < val2 {
-            return -1
+        return -1
-        } else if val1 > val2 {
+    } else if val1 > val2 {
-            return 1
+        return 1
-        }
-        return 0
     }
+    return 0
+}
 
-    intSlice := []int{2, 1, 5, 3, 6, 4}
+func main() {
+    numbers := []int{2, 1, 5, 3, 6, 4}
     comparator := &intComparator{}
-    algorithm.MergeSort(intSlice, comparator)
 
-    fmt.Println(intSlice) //[]int{1, 2, 3, 4, 5, 6}
+    algorithm.MergeSort(numbers, comparator)
+
+    fmt.Println(numbers)
+
+    // Output:
+    // [1 2 3 4 5 6]
 }
 ```
 
-
-
 ### <span id="CountSort">CountSort</span>
-<p>计数排序，参数comparator需要实现包lancetconstraints.Comparator</p>
+
+<p>计数排序，参数comparator需要实现包lancetconstraints.Comparator。</p>
 
 <b>函数签名:</b>
 
 ```go
 func CountSort[T any](slice []T, comparator lancetconstraints.Comparator) []T
 ```
-<b>Example:</b>
+
+<b>示例:</b>
 
 ```go
 package main
@@ -394,42 +412,46 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+type intComparator struct{}
-        val1, _ := v1.(int)
-        val2, _ := v2.(int)
 
-        //ascending order
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        if val1 < val2 {
+    val1, _ := v1.(int)
-            return -1
+    val2, _ := v2.(int)
-        } else if val1 > val2 {
+
-            return 1
+    //ascending order
-        }
+    if val1 < val2 {
-        return 0
+        return -1
+    } else if val1 > val2 {
+        return 1
     }
+    return 0
+}
 
-    intSlice := []int{2, 1, 5, 3, 6, 4}
+func main() {
+    numbers := []int{2, 1, 5, 3, 6, 4}
     comparator := &intComparator{}
-    sortedSlice := algorithm.CountSort(intSlice, comparator)
 
-    fmt.Println(sortedSlice) //[]int{1, 2, 3, 4, 5, 6}
+    sortedNums := algorithm.CountSort(numbers, comparator)
+
+    fmt.Println(sortedNums)
+
+    // Output:
+    // [1 2 3 4 5 6]
 }
 ```
 
-
-
-
 ### <span id="BinarySearch">BinarySearch</span>
-<p>二分递归查找，返回元素索引，未找到元素返回-1，参数comparator需要实现包lancetconstraints.Comparator</p>
+
+<p>二分递归查找，返回元素索引，未找到元素返回-1，参数comparator需要实现包lancetconstraints.Comparator。</p>
 
 <b>函数签名:</b>
 
 ```go
 func BinarySearch[T any](sortedSlice []T, target T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) int
 ```
-<b>Example:</b>
+
+<b>示例:</b>
 
 ```go
 package main
@@ -439,43 +461,48 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
+type intComparator struct{}
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
+    val1, _ := v1.(int)
-        val2, _ := v2.(int)
+    val2, _ := v2.(int)
 
-        //ascending order
+    //ascending order
-        if val1 < val2 {
+    if val1 < val2 {
-            return -1
+        return -1
-        } else if val1 > val2 {
+    } else if val1 > val2 {
-            return 1
+        return 1
-        }
-        return 0
     }
+    return 0
+}
 
-    var sortedNumbers = []int{1, 2, 3, 4, 5, 6, 7, 8}
+func main() {
+    numbers := []int{1, 2, 3, 4, 5, 6, 7, 8}
     comparator := &intComparator{}
-    foundIndex := algorithm.BinarySearch(sortedNumbers, 5, 0, len(sortedNumbers)-1, comparator)
-    fmt.Println(foundIndex) //4
 
-    notFoundIndex := algorithm.BinarySearch(sortedNumbers, 9, 0, len(sortedNumbers)-1, comparator)
+    result1 := algorithm.BinarySearch(numbers, 5, 0, len(numbers)-1, comparator)
-    fmt.Println(notFoundIndex) //-1
+    result2 := algorithm.BinarySearch(numbers, 9, 0, len(numbers)-1, comparator)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // 4
+    // -1
 }
 ```
 
-
-
 ### <span id="BinaryIterativeSearch">BinaryIterativeSearch</span>
-<p>二分迭代查找，返回元素索引，未找到元素返回-1，参数comparator需要实现包lancetconstraints.Comparator</p>
+
+<p>二分迭代查找，返回元素索引，未找到元素返回-1，参数comparator需要实现包lancetconstraints.Comparator。</p>
 
 <b>函数签名:</b>
 
 ```go
 func BinaryIterativeSearch[T any](sortedSlice []T, target T, lowIndex, highIndex int, comparator lancetconstraints.Comparator) int
 ```
-<b>Example:</b>
+
+<b>示例:</b>
 
 ```go
 package main
@@ -485,44 +512,48 @@ import (
     "github.com/duke-git/lancet/v2/algorithm"
 )
 
-func main() {
+type intComparator struct{}
-    type intComparator struct{}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+func (c *intComparator) Compare(v1 any, v2 any) int {
-        val1, _ := v1.(int)
+    val1, _ := v1.(int)
-        val2, _ := v2.(int)
+    val2, _ := v2.(int)
 
-        //ascending order
+    //ascending order
-        if val1 < val2 {
+    if val1 < val2 {
-            return -1
+        return -1
-        } else if val1 > val2 {
+    } else if val1 > val2 {
-            return 1
+        return 1
-        }
-        return 0
     }
+    return 0
+}
 
-    var sortedNumbers = []int{1, 2, 3, 4, 5, 6, 7, 8}
+func main() {
+    numbers := []int{1, 2, 3, 4, 5, 6, 7, 8}
     comparator := &intComparator{}
-    foundIndex := algorithm.BinaryIterativeSearch(sortedNumbers, 5, 0, len(sortedNumbers)-1, comparator)
-    fmt.Println(foundIndex) //4
 
-    notFoundIndex := algorithm.BinaryIterativeSearch(sortedNumbers, 9, 0, len(sortedNumbers)-1, comparator)
+    result1 := algorithm.BinaryIterativeSearch(numbers, 5, 0, len(numbers)-1, comparator)
-    fmt.Println(notFoundIndex) //-1
+    result2 := algorithm.BinaryIterativeSearch(numbers, 9, 0, len(numbers)-1, comparator)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // 4
+    // -1
 }
 ```
 
-
-
-
 ### <span id="LinearSearch">LinearSearch</span>
-<p>线性查找，返回元素索引，未找到元素返回-1，参数comparator需要实现包lancetconstraints.Comparator</p>
+
+<p>基于传入的相等函数线性查找元素，返回元素索引，未找到元素返回-1。</p>
 
 <b>函数签名:</b>
 
 ```go
-func LinearSearch[T any](slice []T, target T, comparator lancetconstraints.Comparator) int
+func LinearSearch[T any](slice []T, target T, equal func(a, b T) bool) int
 ```
-<b>Example:</b>
+
+<b>示例:</b>
 
 ```go
 package main
@@ -533,36 +564,27 @@ import (
 )
 
 func main() {
-    type intComparator struct{}
+    numbers := []int{3, 4, 5, 3, 2, 1}
 
-    func (c *intComparator) Compare(v1 any, v2 any) int {
+    equalFunc := func(a, b int) bool {
-        val1, _ := v1.(int)
+        return a == b
-        val2, _ := v2.(int)
-
-        //ascending order
-        if val1 < val2 {
-            return -1
-        } else if val1 > val2 {
-            return 1
-        }
-        return 0
     }
 
-    intSlice := []int{2, 1, 5, 3, 6, 4}
+    result1 := algorithm.LinearSearch(numbers, 3, equalFunc)
-    comparator := &intComparator{}
+    result2 := algorithm.LinearSearch(numbers, 6, equalFunc)
-    foundIndex := algorithm.LinearSearch(intSlice, 5, comparator)
-    fmt.Println(foundIndex) //2
 
-    notFoundIndex := algorithm.LinearSearch(sortedNumbers, 0, comparator)
+    fmt.Println(result1)
-    fmt.Println(notFoundIndex) //-1
+    fmt.Println(result2)
+
+    // Output:
+    // 0
+    // -1
 }
 ```
 
-
-
-
 ### <span id="LRUCache">LRUCache</span>
-<p>lru实现缓存</p>
+
+<p>lru算法实现缓存。</p>
 
 <b>函数签名:</b>
 
@@ -573,7 +595,8 @@ func (l *LRUCache[K, V]) Put(key K, value V)
 func (l *LRUCache[K, V]) Delete(key K) bool
 func (l *LRUCache[K, V]) Len() int
 ```
-<b>Example:</b>
+
+<b>示例:</b>
 
 ```go
 package main
@@ -588,14 +611,26 @@ func main() {
 
     cache.Put(1, 1)
     cache.Put(2, 2)
-    cache.Put(3, 3)
 
-    fmt.Println(cache.Len()) // 3
+    result1, ok1 := cache.Get(1)
+    result2, ok2 := cache.Get(2)
+    result3, ok3 := cache.Get(3)
 
-    v, ok := cache.Get(1)
+    fmt.Println(result1, ok1)
-    fmt.Println(v, ok) // 1 true
+    fmt.Println(result2, ok2)
+    fmt.Println(result3, ok3)
 
-    ok = cache.Delete(1)
+    fmt.Println(cache.Len())
-    fmt.Println(ok) // true
+
+    ok := cache.Delete(2)
+    fmt.Println(ok)
+
+
+    // Output:
+    // 1 true
+    // 2 true
+    // 0 false
+    // 2
+    // true
 }
-```
+```

docs/concurrency.md

@@ -61,8 +61,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="Bridge">Bridge</span>
 
 <p>Link multiple channels into one channel until cancel the context.</p>
@@ -84,39 +82,37 @@ import (
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.Background())
+    ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
+    defer cancel()
 
-	c := concurrency.NewChannel[int]()
+    c := concurrency.NewChannel[int]()
-	genVals := func() <-chan <-chan int {
+    genVals := func() <-chan <-chan int {
-		out := make(chan (<-chan int))
+        out := make(chan (<-chan int))
-		go func() {
+        go func() {
-			defer close(out)
+            defer close(out)
-			for i := 1; i <= 5; i++ {
+            for i := 1; i <= 5; i++ {
-				stream := make(chan int, 1)
+                stream := make(chan int, 1)
-				stream <- i
+                stream <- i
-				close(stream)
+                close(stream)
-				out <- stream
+                out <- stream
-			}
+            }
-		}()
+        }()
-		return out
+        return out
-	}
+    }
 
-	for v := range c.Bridge(ctx, genVals()) {
+    for v := range c.Bridge(ctx, genVals()) {
-		fmt.Println(v)
+        fmt.Println(v)
-	}
+    }
-	// Output:
+
-	// 1
+    // Output:
-	// 2
+    // 1
-	// 3
+    // 2
-	// 4
+    // 3
-	// 5
+    // 4
+    // 5
 }
 ```
 
-
-
-
 ### <span id="FanIn">FanIn</span>
 
 <p>Merge multiple channels into one channel until cancel the context.</p>
@@ -138,25 +134,24 @@ import (
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.Background())
+    ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
+    defer cancel()
 
-	c := concurrency.NewChannel[int]()
+    c := concurrency.NewChannel[int]()
-	channels := make([]<-chan int, 2)
+    channels := make([]<-chan int, 2)
 
-	for i := 0; i < 2; i++ {
+    for i := 0; i < 2; i++ {
-		channels[i] = c.Take(ctx, c.Repeat(ctx, i), 2)
+        channels[i] = c.Take(ctx, c.Repeat(ctx, i), 2)
-	}
+    }
 
-	chs := c.FanIn(ctx, channels...)
+    chs := c.FanIn(ctx, channels...)
 
-	for v := range chs {
+    for v := range chs {
-		fmt.Println(v) //1 1 0 0 or 0 0 1 1
+        fmt.Println(v) //1 1 0 0 or 0 0 1 1
-	}
+    }
 }
 ```
 
-
 ### <span id="Repeat">Repeat</span>
 
 <p>Create channel, put values into the channel repeatly until cancel the context.</p>
@@ -178,25 +173,24 @@ import (
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.Background())
+    ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
+    defer cancel()
 
-	c := concurrency.NewChannel[int]()
+    c := concurrency.NewChannel[int]()
-	intStream := c.Take(ctx, c.Repeat(ctx, 1, 2), 4)
+    intStream := c.Take(ctx, c.Repeat(ctx, 1, 2), 4)
 
-	for v := range intStream {
+    for v := range intStream {
-		fmt.Println(v)
+        fmt.Println(v)
-	}
+    }
-	// Output:
+
-	// 1
+    // Output:
-	// 2
+    // 1
-	// 1
+    // 2
-	// 2
+    // 1
+    // 2
 }
 ```
 
-
-
 ### <span id="Generate">Generate</span>
 
 <p>Creates a channel, then put values into the channel.</p>
@@ -218,20 +212,20 @@ import (
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.Background())
+    ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
+    defer cancel()
 
-	c := concurrency.NewChannel[int]()
+    c := concurrency.NewChannel[int]()
-	intStream := c.Generate(ctx, 1, 2, 3)
+    intStream := c.Generate(ctx, 1, 2, 3)
 
-	fmt.Println(<-intStream)
+    fmt.Println(<-intStream)
-	fmt.Println(<-intStream)
+    fmt.Println(<-intStream)
-	fmt.Println(<-intStream)
+    fmt.Println(<-intStream)
 
-	// Output:
+    // Output:
-	// 1
+    // 1
-	// 2
+    // 2
-	// 3
+    // 3
 }
 ```
 
@@ -256,28 +250,27 @@ import (
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.Background())
+    ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
+    defer cancel()
 
-	fn := func() string {
+    fn := func() string {
-		return "hello"
+        return "hello"
-	}
+    }
 
-	c := concurrency.NewChannel[string]()
+    c := concurrency.NewChannel[string]()
-	intStream := c.Take(ctx, c.RepeatFn(ctx, fn), 3)
+    intStream := c.Take(ctx, c.RepeatFn(ctx, fn), 3)
 
-	for v := range intStream {
+    for v := range intStream {
-		fmt.Println(v)
+        fmt.Println(v)
-	}
+    }
-	// Output:
+
-	// hello
+    // Output:
-	// hello
+    // hello
-	// hello
+    // hello
+    // hello
 }
 ```
 
-
-
 ### <span id="Or">Or</span>
 
 <p>Read one or more channels into one channel, will close when any readin channel is closed.</p>
@@ -299,31 +292,28 @@ import (
 )
 
 func main() {
-	sig := func(after time.Duration) <-chan any {
+    sig := func(after time.Duration) <-chan any {
-		c := make(chan any)
+        c := make(chan any)
-		go func() {
+        go func() {
-			defer close(c)
+            defer close(c)
-			time.Sleep(after)
+            time.Sleep(after)
-		}()
+        }()
-		return c
+        return c
-	}
+    }
 
-	start := time.Now()
+    start := time.Now()
 
-	c := concurrency.NewChannel[any]()
+    c := concurrency.NewChannel[any]()
-	<-c.Or(
+    <-c.Or(
-		sig(1*time.Second),
+        sig(1*time.Second),
-		sig(2*time.Second),
+        sig(2*time.Second),
-		sig(3*time.Second),
+        sig(3*time.Second),
-	)
+    )
 
-	fmt.Println("done after %v", time.Since(start)) //1.003s
+    fmt.Println("done after %v", time.Since(start)) //1.003s
 }
 ```
 
-
-
-
 ### <span id="OrDone">OrDone</span>
 
 <p>Read a channel into another channel, will close until cancel context.</p>
@@ -345,25 +335,23 @@ import (
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.Background())
+    ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
+    defer cancel()
 
-	c := concurrency.NewChannel[int]()
+    c := concurrency.NewChannel[int]()
-	intStream := c.Take(ctx, c.Repeat(ctx, 1), 3)
+    intStream := c.Take(ctx, c.Repeat(ctx, 1), 3)
 
-	for v := range c.OrDone(ctx, intStream) {
+    for v := range c.OrDone(ctx, intStream) {
-		fmt.Println(v)
+        fmt.Println(v)
-	}
+    }
-	// Output:
+
-	// 1
+    // Output:
-	// 1
+    // 1
-	// 1
+    // 1
+    // 1
 }
 ```
 
-
-
-
 ### <span id="Take">Take</span>
 
 <p>Create a channel whose values are taken from another channel with limit number.</p>
@@ -385,32 +373,31 @@ import (
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.Background())
+    ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
+    defer cancel()
 
-	numbers := make(chan int, 5)
+    numbers := make(chan int, 5)
-	numbers <- 1
+    numbers <- 1
-	numbers <- 2
+    numbers <- 2
-	numbers <- 3
+    numbers <- 3
-	numbers <- 4
+    numbers <- 4
-	numbers <- 5
+    numbers <- 5
-	defer close(numbers)
+    defer close(numbers)
 
-	c := concurrency.NewChannel[int]()
+    c := concurrency.NewChannel[int]()
-	intStream := c.Take(ctx, numbers, 3)
+    intStream := c.Take(ctx, numbers, 3)
 
-	for v := range intStream {
+    for v := range intStream {
-		fmt.Println(v)
+        fmt.Println(v)
-	}
+    }
-	// Output:
+
-	// 1
+    // Output:
-	// 2
+    // 1
-	// 3
+    // 2
+    // 3
 }
 ```
 
-
-
 ### <span id="Tee">Tee</span>
 
 <p>Split one chanel into two channels, until cancel the context.</p>
@@ -432,22 +419,23 @@ import (
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.Background())
+    ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
+    defer cancel()
 
-	c := concurrency.NewChannel[int]()
+    c := concurrency.NewChannel[int]()
-	intStream := c.Take(ctx, c.Repeat(ctx, 1), 2)
+    intStream := c.Take(ctx, c.Repeat(ctx, 1), 2)
 
-	ch1, ch2 := c.Tee(ctx, intStream)
+    ch1, ch2 := c.Tee(ctx, intStream)
 
-	for v := range ch1 {
+    for v := range ch1 {
-		fmt.Println(v)
+        fmt.Println(v)
-		fmt.Println(<-ch2)
+        fmt.Println(<-ch2)
-	}
+    }
-	// Output:
+    
-	// 1
+    // Output:
-	// 1
+    // 1
-	// 1
+    // 1
-	// 1
+    // 1
+    // 1
 }
 ```

docs/concurrency_zh-CN.md

@@ -61,8 +61,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="Bridge">Bridge</span>
 
 <p>将多个channel链接到一个channel，直到取消上下文。</p>
@@ -84,39 +82,37 @@ import (
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.Background())
+    ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
+    defer cancel()
 
-	c := concurrency.NewChannel[int]()
+    c := concurrency.NewChannel[int]()
-	genVals := func() <-chan <-chan int {
+    genVals := func() <-chan <-chan int {
-		out := make(chan (<-chan int))
+        out := make(chan (<-chan int))
-		go func() {
+        go func() {
-			defer close(out)
+            defer close(out)
-			for i := 1; i <= 5; i++ {
+            for i := 1; i <= 5; i++ {
-				stream := make(chan int, 1)
+                stream := make(chan int, 1)
-				stream <- i
+                stream <- i
-				close(stream)
+                close(stream)
-				out <- stream
+                out <- stream
-			}
+            }
-		}()
+        }()
-		return out
+        return out
-	}
+    }
 
-	for v := range c.Bridge(ctx, genVals()) {
+    for v := range c.Bridge(ctx, genVals()) {
-		fmt.Println(v)
+        fmt.Println(v)
-	}
+    }
-	// Output:
+
-	// 1
+    // Output:
-	// 2
+    // 1
-	// 3
+    // 2
-	// 4
+    // 3
-	// 5
+    // 4
+    // 5
 }
 ```
 
-
-
-
 ### <span id="FanIn">FanIn</span>
 
 <p>将多个channel合并为一个channel，直到取消上下文。</p>
@@ -138,25 +134,24 @@ import (
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.Background())
+    ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
+    defer cancel()
 
-	c := concurrency.NewChannel[int]()
+    c := concurrency.NewChannel[int]()
-	channels := make([]<-chan int, 2)
+    channels := make([]<-chan int, 2)
 
-	for i := 0; i < 2; i++ {
+    for i := 0; i < 2; i++ {
-		channels[i] = c.Take(ctx, c.Repeat(ctx, i), 2)
+        channels[i] = c.Take(ctx, c.Repeat(ctx, i), 2)
-	}
+    }
 
-	chs := c.FanIn(ctx, channels...)
+    chs := c.FanIn(ctx, channels...)
 
-	for v := range chs {
+    for v := range chs {
-		fmt.Println(v) //1 1 0 0 or 0 0 1 1
+        fmt.Println(v) //1 1 0 0 or 0 0 1 1
-	}
+    }
 }
 ```
 
-
 ### <span id="Generate">Generate</span>
 
 <p>根据传入的值，生成channel.</p>
@@ -178,20 +173,20 @@ import (
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.Background())
+    ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
+    defer cancel()
 
-	c := concurrency.NewChannel[int]()
+    c := concurrency.NewChannel[int]()
-	intStream := c.Generate(ctx, 1, 2, 3)
+    intStream := c.Generate(ctx, 1, 2, 3)
 
-	fmt.Println(<-intStream)
+    fmt.Println(<-intStream)
-	fmt.Println(<-intStream)
+    fmt.Println(<-intStream)
-	fmt.Println(<-intStream)
+    fmt.Println(<-intStream)
 
-	// Output:
+    // Output:
-	// 1
+    // 1
-	// 2
+    // 2
-	// 3
+    // 3
 }
 ```
 
@@ -216,26 +211,24 @@ import (
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.Background())
+    ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
+    defer cancel()
 
-	c := concurrency.NewChannel[int]()
+    c := concurrency.NewChannel[int]()
-	intStream := c.Take(ctx, c.Repeat(ctx, 1, 2), 4)
+    intStream := c.Take(ctx, c.Repeat(ctx, 1, 2), 4)
 
-	for v := range intStream {
+    for v := range intStream {
-		fmt.Println(v)
+        fmt.Println(v)
-	}
+    }
-	// Output:
+
-	// 1
+    // Output:
-	// 2
+    // 1
-	// 1
+    // 2
-	// 2
+    // 1
+    // 2
 }
 ```
 
-
-
-
 ### <span id="RepeatFn">RepeatFn</span>
 
 <p>返回一个channel，重复执行函数fn，并将结果放入返回的channel，直到取消上下文。</p>
@@ -257,28 +250,26 @@ import (
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.Background())
+    ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
+    defer cancel()
 
-	fn := func() string {
+    fn := func() string {
-		return "hello"
+        return "hello"
-	}
+    }
 
-	c := concurrency.NewChannel[string]()
+    c := concurrency.NewChannel[string]()
-	intStream := c.Take(ctx, c.RepeatFn(ctx, fn), 3)
+    intStream := c.Take(ctx, c.RepeatFn(ctx, fn), 3)
 
-	for v := range intStream {
+    for v := range intStream {
-		fmt.Println(v)
+        fmt.Println(v)
-	}
+    }
-	// Output:
+    // Output:
-	// hello
+    // hello
-	// hello
+    // hello
-	// hello
+    // hello
 }
 ```
 
-
-
 ### <span id="Or">Or</span>
 
 <p>将一个或多个channel读取到一个channel中，当任何读取channel关闭时将结束读取。</p>
@@ -300,31 +291,28 @@ import (
 )
 
 func main() {
-	sig := func(after time.Duration) <-chan any {
+    sig := func(after time.Duration) <-chan any {
-		c := make(chan any)
+        c := make(chan any)
-		go func() {
+        go func() {
-			defer close(c)
+            defer close(c)
-			time.Sleep(after)
+            time.Sleep(after)
-		}()
+        }()
-		return c
+        return c
-	}
+    }
 
-	start := time.Now()
+    start := time.Now()
 
-	c := concurrency.NewChannel[any]()
+    c := concurrency.NewChannel[any]()
-	<-c.Or(
+    <-c.Or(
-		sig(1*time.Second),
+        sig(1*time.Second),
-		sig(2*time.Second),
+        sig(2*time.Second),
-		sig(3*time.Second),
+        sig(3*time.Second),
-	)
+    )
 
-	fmt.Println("done after %v", time.Since(start)) //1.003s
+    fmt.Println("done after %v", time.Since(start)) //1.003s
 }
 ```
 
-
-
-
 ### <span id="OrDone">OrDone</span>
 
 <p>将一个channel读入另一个channel，直到取消上下文。</p>
@@ -346,25 +334,23 @@ import (
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.Background())
+    ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
+    defer cancel()
 
-	c := concurrency.NewChannel[int]()
+    c := concurrency.NewChannel[int]()
-	intStream := c.Take(ctx, c.Repeat(ctx, 1), 3)
+    intStream := c.Take(ctx, c.Repeat(ctx, 1), 3)
 
-	for v := range c.OrDone(ctx, intStream) {
+    for v := range c.OrDone(ctx, intStream) {
-		fmt.Println(v)
+        fmt.Println(v)
-	}
+    }
-	// Output:
+
-	// 1
+    // Output:
-	// 1
+    // 1
-	// 1
+    // 1
+    // 1
 }
 ```
 
-
-
-
 ### <span id="Take">Take</span>
 
 <p>返回一个channel，其值从另一个channel获取，直到取消上下文。</p>
@@ -386,32 +372,31 @@ import (
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.Background())
+    ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
+    defer cancel()
 
-	numbers := make(chan int, 5)
+    numbers := make(chan int, 5)
-	numbers <- 1
+    numbers <- 1
-	numbers <- 2
+    numbers <- 2
-	numbers <- 3
+    numbers <- 3
-	numbers <- 4
+    numbers <- 4
-	numbers <- 5
+    numbers <- 5
-	defer close(numbers)
+    defer close(numbers)
 
-	c := concurrency.NewChannel[int]()
+    c := concurrency.NewChannel[int]()
-	intStream := c.Take(ctx, numbers, 3)
+    intStream := c.Take(ctx, numbers, 3)
 
-	for v := range intStream {
+    for v := range intStream {
-		fmt.Println(v)
+        fmt.Println(v)
-	}
+    }
-	// Output:
+
-	// 1
+    // Output:
-	// 2
+    // 1
-	// 3
+    // 2
+    // 3
 }
 ```
 
-
-
 ### <span id="Tee">Tee</span>
 
 <p>将一个channel分成两个channel，直到取消上下文。</p>
@@ -433,22 +418,22 @@ import (
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.Background())
+    ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
+    defer cancel()
 
-	c := concurrency.NewChannel[int]()
+    c := concurrency.NewChannel[int]()
-	intStream := c.Take(ctx, c.Repeat(ctx, 1), 2)
+    intStream := c.Take(ctx, c.Repeat(ctx, 1), 2)
 
-	ch1, ch2 := c.Tee(ctx, intStream)
+    ch1, ch2 := c.Tee(ctx, intStream)
 
-	for v := range ch1 {
+    for v := range ch1 {
-		fmt.Println(v)
+        fmt.Println(v)
-		fmt.Println(<-ch2)
+        fmt.Println(<-ch2)
-	}
+    }
-	// Output:
+    // Output:
-	// 1
+    // 1
-	// 1
+    // 1
-	// 1
+    // 1
-	// 1
+    // 1
 }
 ```

docs/condition.md

@@ -57,41 +57,52 @@ import (
 )
 
 func main() {
-	// bool
+    // bool
-	fmt.Println(condition.Bool(false)) // false
+    result1 := condition.Bool(false)
-	fmt.Println(condition.Bool(true)) // true
+    result2 := condition.Bool(true)
+    fmt.Println(result1) // false
+    fmt.Println(result2) // true
 
-	// integer
+    // integer
-	fmt.Println(condition.Bool(0)) // false
+    result3 := condition.Bool(0) 
-	fmt.Println(condition.Bool(1)) // true
+    result4 := condition.Bool(1)
+    fmt.Println(result3) // false
+    fmt.Println(result4) // true
 
-	// float
+    // string
-	fmt.Println(condition.Bool(0.0)) // false
+    result5 := condition.Bool("")
-	fmt.Println(condition.Bool(0.1)) // true
+    result6 := condition.Bool(" ")
+    fmt.Println(result5) // false
+    fmt.Println(result6) // true
 
-	// string
+    // slice
-	fmt.Println(condition.Bool("")) // false
+    nums := []int{}
-	fmt.Println(condition.Bool(" ")) // true
+    result7 := condition.Bool(nums)
-	fmt.Println(condition.Bool("0")) // true
 
-	// slice
+    nums = append(nums, 1, 2)
-	var nums [2]int
+    result8 := condition.Bool(nums)
-	fmt.Println(condition.Bool(nums)) // false
+    fmt.Println(result7) // false
-	nums = [2]int{0, 1}
+    fmt.Println(result8) // true
-	fmt.Println(condition.Bool(nums)) // true
 
-	// map
+    // struct
-	fmt.Println(condition.Bool(map[string]string{})) // false
+    result9 = condition.Bool(struct{}{})
-	fmt.Println(condition.Bool(map[string]string{"a": "a"})) // true
+    fmt.Println(result8) // false
 
-	// struct
+
-	fmt.Println(condition.Bool(struct{}{})) // false
+    // Output:
-	fmt.Println(condition.Bool(time.Now())) // true
+    // false
+    // true
+    // false
+    // true
+    // false
+    // true
+    // false
+    // true
+    // false
 }
 ```
 
 
-
 ### <span id="And">And</span>
 <p>Returns true if both a and b are truthy.</p>
 
@@ -111,10 +122,10 @@ import (
 )
 
 func main() {
-	fmt.Println(condition.And(0, 1)) // false
+    fmt.Println(condition.And(0, 1)) // false
-	fmt.Println(condition.And(0, "")) // false
+    fmt.Println(condition.And(0, "")) // false
-	fmt.Println(condition.And(0, "0")) // false
+    fmt.Println(condition.And(0, "0")) // false
-	fmt.Println(condition.And(1, "0")) // true
+    fmt.Println(condition.And(1, "0")) // true
 }
 ```
 
@@ -139,10 +150,10 @@ import (
 )
 
 func main() {
-	fmt.Println(condition.Or(0, "")) // false
+    fmt.Println(condition.Or(0, "")) // false
-	fmt.Println(condition.Or(0, 1)) // true
+    fmt.Println(condition.Or(0, 1)) // true
-	fmt.Println(condition.Or(0, "0")) // true
+    fmt.Println(condition.Or(0, "0")) // true
-	fmt.Println(condition.Or(1, "0")) // true
+    fmt.Println(condition.Or(1, "0")) // true
 }
 ```
 
@@ -167,10 +178,10 @@ import (
 )
 
 func main() {
-	fmt.Println(condition.Xor(0, 0)) // false
+    fmt.Println(condition.Xor(0, 0)) // false
-	fmt.Println(condition.Xor(0, 1)) // true
+    fmt.Println(condition.Xor(0, 1)) // true
-	fmt.Println(condition.Xor(1, 0)) // true
+    fmt.Println(condition.Xor(1, 0)) // true
-	fmt.Println(condition.Xor(1, 1)) // false
+    fmt.Println(condition.Xor(1, 1)) // false
 }
 ```
 
@@ -195,10 +206,10 @@ import (
 )
 
 func main() {
-	fmt.Println(condition.Nor(0, 0)) // true
+    fmt.Println(condition.Nor(0, 0)) // true
-	fmt.Println(condition.Nor(0, 1)) // false
+    fmt.Println(condition.Nor(0, 1)) // false
-	fmt.Println(condition.Nor(1, 0)) // false
+    fmt.Println(condition.Nor(1, 0)) // false
-	fmt.Println(condition.Nor(1, 1)) // false
+    fmt.Println(condition.Nor(1, 1)) // false
 }
 ```
 
@@ -222,10 +233,10 @@ import (
 )
 
 func main() {
-	fmt.Println(condition.Xnor(0, 0)) // true
+    fmt.Println(condition.Xnor(0, 0)) // true
-	fmt.Println(condition.Xnor(0, 1)) // false
+    fmt.Println(condition.Xnor(0, 1)) // false
-	fmt.Println(condition.Xnor(1, 0)) // false
+    fmt.Println(condition.Xnor(1, 0)) // false
-	fmt.Println(condition.Xnor(1, 1)) // true
+    fmt.Println(condition.Xnor(1, 1)) // true
 }
 ```
 
@@ -249,10 +260,10 @@ import (
 )
 
 func main() {
-	fmt.Println(condition.Nand(0, 0)) // true
+    fmt.Println(condition.Nand(0, 0)) // true
-	fmt.Println(condition.Nand(0, 1)) // true
+    fmt.Println(condition.Nand(0, 1)) // true
-	fmt.Println(condition.Nand(1, 0)) // true
+    fmt.Println(condition.Nand(1, 0)) // true
-	fmt.Println(condition.Nand(1, 1)) // false
+    fmt.Println(condition.Nand(1, 1)) // false
 }
 ```
 
@@ -277,10 +288,18 @@ import (
 )
 
 func main() {
-	trueValue := "1"
+    conditionTrue := 2 > 1
-	falseValue := "0"
+    result1 := condition.TernaryOperator(conditionTrue, 0, 1)
 
-	fmt.Println(condition.TernaryOperator(true, trueValue, falseValue)) // "1"
+    conditionFalse := 2 > 3
+    result2 := condition.TernaryOperator(conditionFalse, 0, 1)
+    
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // 0
+    // 1
 }
 ```
 

docs/condition_zh-CN.md

@@ -56,41 +56,51 @@ import (
 )
 
 func main() {
-	// bool
+    // bool
-	fmt.Println(condition.Bool(false)) // false
+    result1 := condition.Bool(false)
-	fmt.Println(condition.Bool(true)) // true
+    result2 := condition.Bool(true)
+    fmt.Println(result1) // false
+    fmt.Println(result2) // true
 
-	// integer
+    // integer
-	fmt.Println(condition.Bool(0)) // false
+    result3 := condition.Bool(0) 
-	fmt.Println(condition.Bool(1)) // true
+    result4 := condition.Bool(1)
+    fmt.Println(result3) // false
+    fmt.Println(result4) // true
 
-	// float
+    // string
-	fmt.Println(condition.Bool(0.0)) // false
+    result5 := condition.Bool("")
-	fmt.Println(condition.Bool(0.1)) // true
+    result6 := condition.Bool(" ")
+    fmt.Println(result5) // false
+    fmt.Println(result6) // true
 
-	// string
+    // slice
-	fmt.Println(condition.Bool("")) // false
+    nums := []int{}
-	fmt.Println(condition.Bool(" ")) // true
+    result7 := condition.Bool(nums)
-	fmt.Println(condition.Bool("0")) // true
 
-	// slice
+    nums = append(nums, 1, 2)
-	var nums [2]int
+    result8 := condition.Bool(nums)
-	fmt.Println(condition.Bool(nums)) // false
+    fmt.Println(result7) // false
-	nums = [2]int{0, 1}
+    fmt.Println(result8) // true
-	fmt.Println(condition.Bool(nums)) // true
 
-	// map
+    // struct
-	fmt.Println(condition.Bool(map[string]string{})) // false
+    result9 = condition.Bool(struct{}{})
-	fmt.Println(condition.Bool(map[string]string{"a": "a"})) // true
+    fmt.Println(result8) // false
 
-	// struct
+
-	fmt.Println(condition.Bool(struct{}{})) // false
+    // Output:
-	fmt.Println(condition.Bool(time.Now())) // true
+    // false
+    // true
+    // false
+    // true
+    // false
+    // true
+    // false
+    // true
+    // false
 }
 ```
 
-
-
 ### <span id="And">And</span>
 <p>逻辑且操作，当切仅当a和b都为true时返回true</p>
 
@@ -110,15 +120,13 @@ import (
 )
 
 func main() {
-	fmt.Println(condition.And(0, 1)) // false
+    fmt.Println(condition.And(0, 1)) // false
-	fmt.Println(condition.And(0, "")) // false
+    fmt.Println(condition.And(0, "")) // false
-	fmt.Println(condition.And(0, "0")) // false
+    fmt.Println(condition.And(0, "0")) // false
-	fmt.Println(condition.And(1, "0")) // true
+    fmt.Println(condition.And(1, "0")) // true
 }
 ```
 
-
-
 ### <span id="Or">Or</span>
 <p>逻辑或操作，当切仅当a和b都为false时返回false</p>
 
@@ -138,15 +146,13 @@ import (
 )
 
 func main() {
-	fmt.Println(condition.Or(0, "")) // false
+    fmt.Println(condition.Or(0, "")) // false
-	fmt.Println(condition.Or(0, 1)) // true
+    fmt.Println(condition.Or(0, 1)) // true
-	fmt.Println(condition.Or(0, "0")) // true
+    fmt.Println(condition.Or(0, "0")) // true
-	fmt.Println(condition.Or(1, "0")) // true
+    fmt.Println(condition.Or(1, "0")) // true
 }
 ```
 
-
-
 ### <span id="Xor">Xor</span>
 <p>逻辑异或操作，a和b相同返回false，a和b不相同返回true</p>
 
@@ -166,15 +172,13 @@ import (
 )
 
 func main() {
-	fmt.Println(condition.Xor(0, 0)) // false
+    fmt.Println(condition.Xor(0, 0)) // false
-	fmt.Println(condition.Xor(0, 1)) // true
+    fmt.Println(condition.Xor(0, 1)) // true
-	fmt.Println(condition.Xor(1, 0)) // true
+    fmt.Println(condition.Xor(1, 0)) // true
-	fmt.Println(condition.Xor(1, 1)) // false
+    fmt.Println(condition.Xor(1, 1)) // false
 }
 ```
 
-
-
 ### <span id="Nor">Nor</span>
 <p>异或的取反操作</p>
 
@@ -194,15 +198,13 @@ import (
 )
 
 func main() {
-	fmt.Println(condition.Nor(0, 0)) // true
+    fmt.Println(condition.Nor(0, 0)) // true
-	fmt.Println(condition.Nor(0, 1)) // false
+    fmt.Println(condition.Nor(0, 1)) // false
-	fmt.Println(condition.Nor(1, 0)) // false
+    fmt.Println(condition.Nor(1, 0)) // false
-	fmt.Println(condition.Nor(1, 1)) // false
+    fmt.Println(condition.Nor(1, 1)) // false
 }
 ```
 
-
-
 ### <span id="Xnor">Xnor</span>
 <p>如果a和b都是真的或a和b均是假的，则返回true。</p>
 
@@ -222,10 +224,10 @@ import (
 )
 
 func main() {
-	fmt.Println(condition.Xnor(0, 0)) // true
+    fmt.Println(condition.Xnor(0, 0)) // true
-	fmt.Println(condition.Xnor(0, 1)) // false
+    fmt.Println(condition.Xnor(0, 1)) // false
-	fmt.Println(condition.Xnor(1, 0)) // false
+    fmt.Println(condition.Xnor(1, 0)) // false
-	fmt.Println(condition.Xnor(1, 1)) // true
+    fmt.Println(condition.Xnor(1, 1)) // true
 }
 ```
 
@@ -248,15 +250,13 @@ import (
 )
 
 func main() {
-	fmt.Println(condition.Nand(0, 0)) // true
+    fmt.Println(condition.Nand(0, 0)) // true
-	fmt.Println(condition.Nand(0, 1)) // true
+    fmt.Println(condition.Nand(0, 1)) // true
-	fmt.Println(condition.Nand(1, 0)) // true
+    fmt.Println(condition.Nand(1, 0)) // true
-	fmt.Println(condition.Nand(1, 1)) // false
+    fmt.Println(condition.Nand(1, 1)) // false
 }
 ```
 
-
-
 ### <span id="TernaryOperator">TernaryOperator</span>
 <p>三元运算符</p>
 
@@ -276,10 +276,18 @@ import (
 )
 
 func main() {
-	trueValue := "1"
+    conditionTrue := 2 > 1
-	falseValue := "0"
+    result1 := condition.TernaryOperator(conditionTrue, 0, 1)
 
-	fmt.Println(condition.TernaryOperator(true, trueValue, falseValue)) // "1"
+    conditionFalse := 2 > 3
+    result2 := condition.TernaryOperator(conditionFalse, 0, 1)
+    
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // 0
+    // 1
 }
 ```
 

docs/convertor.md

@@ -40,8 +40,6 @@ import (
 
 ## Documentation
 
-
-
 ### <span id="ColorHexToRGB">ColorHexToRGB</span>
 <p>Convert color hex to color rgb.</p>
 
@@ -63,12 +61,14 @@ import (
 func main() {
     colorHex := "#003366"
     r, g, b := convertor.ColorHexToRGB(colorHex)
-    fmt.Println(r, g, b) //0,51,102
+
+    fmt.Println(r, g, b)
+
+    // Output:
+    // 0 51 102
 }
 ```
 
-
-
 ### <span id="ColorRGBToHex">ColorRGBToHex</span>
 
 <p>Convert color rgb to color hex.</p>
@@ -92,14 +92,15 @@ func main() {
     r := 0
     g := 51
     b := 102
-    colorHex := convertor.ColorRGBToHex(r, g, b)
+    colorHex := ColorRGBToHex(r, g, b)
 
-    fmt.Println(colorHex) //#003366
+    fmt.Println(colorHex)
+
+    // Output:
+    // #003366
 }
 ```
 
-
-
 ### <span id="ToBool">ToBool</span>
 
 <p>Convert string to bool. Use strconv.ParseBool.</p>
@@ -120,22 +121,26 @@ import (
 )
 
 func main() {
-    v1, _ := convertor.ToBool("1")
+    cases := []string{"1", "true", "True", "false", "False", "0", "123", "0.0", "abc"}
-    fmt.Println(v1) //true
 
-    v2, _ := convertor.ToBool("true")
+    for i := 0; i < len(cases); i++ {
-    fmt.Println(v2) //true
+        result, _ := convertor.ToBool(cases[i])
+        fmt.Println(result)
+    }
 
-    v3, _ := convertor.ToBool("True")
+    // Output:
-    fmt.Println(v3) //true
+    // true
-
+    // true
-    v4, _ := convertor.ToBool("123")
+    // true
-    fmt.Println(v4) //false
+    // false
+    // false
+    // false
+    // false
+    // false
+    // false
 }
 ```
 
-
-
 ### <span id="ToBytes">ToBytes</span>
 
 <p>Convert value to byte slice.</p>
@@ -156,16 +161,18 @@ import (
 )
 
 func main() {
-    bytesData, err := convertor.ToBytes("0")
+    bytesData, err := convertor.ToBytes("abc")
     if err != nil {
         fmt.Println(err)
     }
-    fmt.Println(bytesData) //[]bytes{3, 4, 0, 0}
+
+    fmt.Println(bytesData)
+
+    // Output:
+    // [97 98 99]
 }
 ```
 
-
-
 ### <span id="ToChar">ToChar</span>
 
 <p>Convert string to char slice.</p>
@@ -186,18 +193,21 @@ import (
 )
 
 func main() {
-    chars := convertor.ToChar("")
+    result1 := convertor.ToChar("")
-    fmt.Println(chars) //[]string{""}
+    result2 := convertor.ToChar("abc")
+    result3 := convertor.ToChar("1 2#3")
 
-    chars = convertor.ToChar("abc")
+    fmt.Println(result1)
-    fmt.Println(chars) //[]string{"a", "b", "c"}
+    fmt.Println(result2)
+    fmt.Println(result3)
 
-    chars = convertor.ToChar("1 2#3")
+    // Output:
-    fmt.Println(chars) //[]string{"1", " ", "2", "#", "3"}
+    // []
+    // [a b c]
+    // [1   2 # 3]
 }
 ```
 
-
 ### <span id="ToChannel">ToChannel</span>
 
 <p>Convert a collection of elements to a read-only channel.</p>
@@ -219,23 +229,21 @@ import (
 
 func main() {
     ch := convertor.ToChannel([]int{1, 2, 3})
+    result1 := <-ch
+    result2 := <-ch
+    result3 := <-ch
 
-    val1, _ := <-ch
+    fmt.Println(result1)
-    fmt.Println(val1) //1
+    fmt.Println(result2)
+    fmt.Println(result3)
 
-    val2, _ := <-ch
+    // Output:
-    fmt.Println(val2) //2
+    // 1
-
+    // 2
-    val3, _ := <-ch
+    // 3
-    fmt.Println(val3) //3
-
-    _, ok := <-ch
-    fmt.Println(ok) //false
 }
 ```
 
-
-
 ### <span id="ToFloat">ToFloat</span>
 
 <p>Convert value to a float64 value. If param is a invalid floatable, will return 0.0 and error. </p>
@@ -256,19 +264,30 @@ import (
 )
 
 func main() {
-    v, err := convertor.ToFloat("")
+    result1, _ := convertor.ToFloat("")
-    if err != nil {
+    result2, err := convertor.ToFloat("abc")
-        fmt.Println(err) //strconv.ParseFloat: parsing "": invalid syntax
+    result3, _ := convertor.ToFloat("-1")
-    }
+    result4, _ := convertor.ToFloat("-.11")
-    fmt.Println(v) //0
+    result5, _ := convertor.ToFloat("1.23e3")
+    result6, _ := convertor.ToFloat(true)
 
-    v, _ = convertor.ToFloat("-.11")
+    fmt.Println(result1)
-    fmt.Println(v) //-0.11
+    fmt.Println(result2, err)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+
+    // Output:
+    // 0
+    // 0 strconv.ParseFloat: parsing "": invalid syntax
+    // -1
+    // -0.11
+    // 1230
+    // 0
 }
 ```
 
-
-
 ### <span id="ToInt">ToInt</span>
 
 <p>Convert value to a int64 value. If param is a invalid intable, will return 0 and error. </p>
@@ -289,19 +308,27 @@ import (
 )
 
 func main() {
-    v, err := convertor.ToInt("")
+    result1, _ := convertor.ToInt("123")
-    if err != nil {
+    result2, _ := convertor.ToInt("-123")
-        fmt.Println(err) //strconv.ParseInt: parsing "": invalid syntax
+    result3, _ := convertor.ToInt(float64(12.3))
-    }
+    result4, err := convertor.ToInt("abc")
-    fmt.Println(v) //0
+    result5, _ := convertor.ToInt(true)
 
-    v, _ = convertor.ToFloat(1.12)
+    fmt.Println(result1)
-    fmt.Println(v) //1
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4, err)
+    fmt.Println(result5)
+
+    // Output:
+    // 123
+    // -123
+    // 12
+    // 0 strconv.ParseInt: parsing "": invalid syntax
+    // 0
 }
 ```
 
-
-
 ### <span id="ToJson">ToJson</span>
 
 <p>Convert interface to json string. If param can't be converted, will return "" and error. </p>
@@ -322,14 +349,20 @@ import (
 )
 
 func main() {
-    var aMap = map[string]int{"a": 1, "b": 2, "c": 3}
+    aMap := map[string]int{"a": 1, "b": 2, "c": 3}
-    jsonStr, _ := convertor.ToJson(aMap)
+    result, err := ToJson(aMap)
-    fmt.Printf("%q", jsonStr) //"{\"a\":1,\"b\":2,\"c\":3}"
+
+    if err != nil {
+        fmt.Printf("%v", err)
+    }
+
+    fmt.Println(result)
+
+    // Output:
+    // {"a":1,"b":2,"c":3}
 }
 ```
 
-
-
 ### <span id="ToMap">ToMap</span>
 
 <p>Convert a slice of structs to a map based on iteratee function. </p>
@@ -358,16 +391,18 @@ func main() {
         {name: "Hello", code: 100},
         {name: "Hi", code: 101},
     }
+
     result := convertor.ToMap(messages, func(msg Message) (int, string) {
         return msg.code, msg.name
     })
 
-    fmt.Println(result) //{100: "Hello", 101: "Hi"}
+    fmt.Println(result)
+
+    // Output:
+    // map[100:Hello 101:Hi]
 }
 ```
 
-
-
 ### <span id="ToPointer">ToPointer</span>
 
 <p>Returns a pointer to passed value. </p>
@@ -389,11 +424,13 @@ import (
 
 func main() {
     result := convertor.ToPointer(123)
-    fmt.Println(*result) //123
+    fmt.Println(*result) 
+    
+    // Output:
+    // 123
 }
 ```
 
-
 ### <span id="ToString">ToString</span>
 
 <p>ToString convert value to string, for number, string, []byte, will convert to string. For other type (slice, map, array, struct) will call json.Marshal</p>
@@ -414,13 +451,33 @@ import (
 )
 
 func main() {
-    fmt.Printf("%q", convertor.ToString(1)) //"1"
+    result1 := convertor.ToString("")
-    fmt.Printf("%q", convertor.ToString(1.1)) //"1.1"
+    result2 := convertor.ToString(nil)
-    fmt.Printf("%q", convertor.ToString([]int{1, 2, 3})) //"[1,2,3]"
+    result3 := convertor.ToString(0)
+    result4 := convertor.ToString(1.23)
+    result5 := convertor.ToString(true)
+    result6 := convertor.ToString(false)
+    result7 := convertor.ToString([]int{1, 2, 3})
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+    fmt.Println(result7)
+
+    // Output:
+    //
+    //
+    // 0
+    // 1.23
+    // true
+    // false
+    // [1,2,3]
 }
 ```
 
-
 ### <span id="StructToMap">StructToMap</span>
 
 <p>Convert struct to map, only convert exported field, struct field tag `json` should be set.</p>
@@ -451,12 +508,13 @@ func main() {
     }
     pm, _ := convertor.StructToMap(p)
 
-    fmt.Printf("type: %T, value: %s", pm, pm) //type: map[string]interface {}, value: map[name:test]
+    fmt.Println(pm)
+
+    // Output:
+    // map[name:test]
 }
 ```
 
-
-
 ### <span id="MapToSlice">MapToSlice</span>
 
 <p>Convert a map to a slice based on iteratee function.</p>
@@ -508,12 +566,13 @@ import (
 
 func main() {
     byteData, _ := convertor.EncodeByte("abc")
-    fmt.Println(byteData) //[]byte{6, 12, 0, 3, 97, 98, 99}
+    fmt.Println(byteData)
+
+    // Output:
+    // [6 12 0 3 97 98 99]
 }
 ```
 
-
-
 ### <span id="DecodeByte">DecodeByte</span>
 
 <p>Decode byte data to target object. target should be a pointer instance.</p>
@@ -535,8 +594,16 @@ import (
 
 func main() {
     var result string
-	byteData := []byte{6, 12, 0, 3, 97, 98, 99}
+    byteData := []byte{6, 12, 0, 3, 97, 98, 99}
-	convertor.DecodeByte(byteData, &result)
+    
-    fmt.Println(result) //"abc"
+    err := convertor.DecodeByte(byteData, &result)
+    if err != nil {
+        return
+    }
+
+    fmt.Println(result)
+    
+    // Output:
+    // abc
 }
 ```

docs/convertor_zh-CN.md

@@ -43,16 +43,15 @@ import (
 ## 文档
 
 
-
 ### <span id="ColorHexToRGB">ColorHexToRGB</span>
-<p>颜色值十六进制转rgb</p>
+<p>颜色值十六进制转rgb。</p>
 
 <b>函数签名:</b>
 
 ```go
 func ColorHexToRGB(colorHex string) (red, green, blue int)
 ```
-<b>列子:</b>
+<b>示例:</b>
 
 ```go
 package main
@@ -65,22 +64,24 @@ import (
 func main() {
     colorHex := "#003366"
     r, g, b := convertor.ColorHexToRGB(colorHex)
-    fmt.Println(r, g, b) //0,51,102
+
+    fmt.Println(r, g, b)
+
+    // Output:
+    // 0 51 102
 }
 ```
 
-
-
 ### <span id="ColorRGBToHex">ColorRGBToHex</span>
 
-<p>颜色值rgb转十六进制</p>
+<p>颜色值rgb转十六进制。</p>
 
 <b>函数签名:</b>
 
 ```go
 func ColorRGBToHex(red, green, blue int) string
 ```
-<b>列子:</b>
+<b>示例:</b>
 
 ```go
 package main
@@ -94,24 +95,25 @@ func main() {
     r := 0
     g := 51
     b := 102
-    colorHex := convertor.ColorRGBToHex(r, g, b)
+    colorHex := ColorRGBToHex(r, g, b)
 
-    fmt.Println(colorHex) //#003366
+    fmt.Println(colorHex)
+
+    // Output:
+    // #003366
 }
 ```
 
-
-
 ### <span id="ToBool">ToBool</span>
 
-<p>字符串转布尔类型，使用strconv.ParseBool</p>
+<p>字符串转布尔类型，使用strconv.ParseBool。</p>
 
 <b>函数签名:</b>
 
 ```go
 func ToBool(s string) (bool, error)
 ```
-<b>列子:</b>
+<b>示例:</b>
 
 ```go
 package main
@@ -122,32 +124,36 @@ import (
 )
 
 func main() {
-    v1, _ := convertor.ToBool("1")
+    cases := []string{"1", "true", "True", "false", "False", "0", "123", "0.0", "abc"}
-    fmt.Println(v1) //true
 
-    v2, _ := convertor.ToBool("true")
+    for i := 0; i < len(cases); i++ {
-    fmt.Println(v2) //true
+        result, _ := convertor.ToBool(cases[i])
+        fmt.Println(result)
+    }
 
-    v3, _ := convertor.ToBool("True")
+    // Output:
-    fmt.Println(v3) //true
+    // true
-
+    // true
-    v4, _ := convertor.ToBool("123")
+    // true
-    fmt.Println(v4) //false
+    // false
+    // false
+    // false
+    // false
+    // false
+    // false
 }
 ```
 
-
-
 ### <span id="ToBytes">ToBytes</span>
 
-<p>interface转字节切片.</p>
+<p>Interface转字节切片。</p>
 
 <b>函数签名:</b>
 
 ```go
 func ToBytes(data any) ([]byte, error)
 ```
-<b>列子:</b>
+<b>示例:</b>
 
 ```go
 package main
@@ -158,26 +164,28 @@ import (
 )
 
 func main() {
-    bytesData, err := convertor.ToBytes("0")
+    bytesData, err := convertor.ToBytes("abc")
     if err != nil {
         fmt.Println(err)
     }
-    fmt.Println(bytesData) //[]bytes{3, 4, 0, 0}
+
+    fmt.Println(bytesData)
+
+    // Output:
+    // [97 98 99]
 }
 ```
 
-
-
 ### <span id="ToChar">ToChar</span>
 
-<p>字符串转字符切片</p>
+<p>字符串转字符切片。</p>
 
 <b>函数签名:</b>
 
 ```go
 func ToChar(s string) []string
 ```
-<b>列子:</b>
+<b>示例:</b>
 
 ```go
 package main
@@ -188,29 +196,31 @@ import (
 )
 
 func main() {
-    chars := convertor.ToChar("")
+    result1 := convertor.ToChar("")
-    fmt.Println(chars) //[]string{""}
+    result2 := convertor.ToChar("abc")
+    result3 := convertor.ToChar("1 2#3")
 
-    chars = convertor.ToChar("abc")
+    fmt.Println(result1)
-    fmt.Println(chars) //[]string{"a", "b", "c"}
+    fmt.Println(result2)
+    fmt.Println(result3)
 
-    chars = convertor.ToChar("1 2#3")
+    // Output:
-    fmt.Println(chars) //[]string{"1", " ", "2", "#", "3"}
+    // []
+    // [a b c]
+    // [1   2 # 3]
 }
 ```
 
-
-
 ### <span id="ToChannel">ToChannel</span>
 
-<p>将切片转为只读channel</p>
+<p>将切片转为只读channel。</p>
 
 <b>函数签名:</b>
 
 ```go
 func ToChannel[T any](array []T) <-chan T
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 package main
@@ -222,33 +232,31 @@ import (
 
 func main() {
     ch := convertor.ToChannel([]int{1, 2, 3})
+    result1 := <-ch
+    result2 := <-ch
+    result3 := <-ch
 
-    val1, _ := <-ch
+    fmt.Println(result1)
-    fmt.Println(val1) //1
+    fmt.Println(result2)
+    fmt.Println(result3)
 
-    val2, _ := <-ch
+    // Output:
-    fmt.Println(val2) //2
+    // 1
-
+    // 2
-    val3, _ := <-ch
+    // 3
-    fmt.Println(val3) //3
-
-    _, ok := <-ch
-    fmt.Println(ok) //false
 }
 ```
 
-
-
 ### <span id="ToFloat">ToFloat</span>
 
-<p>将interface转成float64类型，如果参数无法转换，会返回0和error</p>
+<p>将interface转成float64类型，如果参数无法转换，会返回0和error。</p>
 
 <b>函数签名:</b>
 
 ```go
 func ToFloat(value any) (float64, error)
 ```
-<b>列子:</b>
+<b>示例:</b>
 
 ```go
 package main
@@ -259,29 +267,40 @@ import (
 )
 
 func main() {
-    v, err := convertor.ToFloat("")
+    result1, _ := convertor.ToFloat("")
-    if err != nil {
+    result2, err := convertor.ToFloat("abc")
-        fmt.Println(err) //strconv.ParseFloat: parsing "": invalid syntax
+    result3, _ := convertor.ToFloat("-1")
-    }
+    result4, _ := convertor.ToFloat("-.11")
-    fmt.Println(v) //0
+    result5, _ := convertor.ToFloat("1.23e3")
+    result6, _ := convertor.ToFloat(true)
 
-    v, _ = convertor.ToFloat("-.11")
+    fmt.Println(result1)
-    fmt.Println(v) //-0.11
+    fmt.Println(result2, err)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+
+    // Output:
+    // 0
+    // 0 strconv.ParseFloat: parsing "": invalid syntax
+    // -1
+    // -0.11
+    // 1230
+    // 0
 }
 ```
 
-
-
 ### <span id="ToInt">ToInt</span>
 
-<p>将interface转成int64类型，如果参数无法转换，会返回0和error</p>
+<p>将interface转成int64类型，如果参数无法转换，会返回0和error。</p>
 
 <b>函数签名:</b>
 
 ```go
 func ToInt(value any) (int64, error)
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 package main
@@ -292,29 +311,37 @@ import (
 )
 
 func main() {
-    v, err := convertor.ToInt("")
+    result1, _ := convertor.ToInt("123")
-    if err != nil {
+    result2, _ := convertor.ToInt("-123")
-        fmt.Println(err) //strconv.ParseInt: parsing "": invalid syntax
+    result3, _ := convertor.ToInt(float64(12.3))
-    }
+    result4, err := convertor.ToInt("abc")
-    fmt.Println(v) //0
+    result5, _ := convertor.ToInt(true)
 
-    v, _ = convertor.ToFloat(1.12)
+    fmt.Println(result1)
-    fmt.Println(v) //1
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4, err)
+    fmt.Println(result5)
+
+    // Output:
+    // 123
+    // -123
+    // 12
+    // 0 strconv.ParseInt: parsing "": invalid syntax
+    // 0
 }
 ```
 
-
-
 ### <span id="ToJson">ToJson</span>
 
-<p>将interface转成json字符串，如果参数无法转换，会返回""和error</p>
+<p>将interface转成json字符串，如果参数无法转换，会返回""和error。</p>
 
 <b>函数签名:</b>
 
 ```go
 func ToJson(value any) (string, error)
 ```
-<b>列子:</b>
+<b>示例:</b>
 
 ```go
 package main
@@ -325,24 +352,30 @@ import (
 )
 
 func main() {
-    var aMap = map[string]int{"a": 1, "b": 2, "c": 3}
+    aMap := map[string]int{"a": 1, "b": 2, "c": 3}
-    jsonStr, _ := convertor.ToJson(aMap)
+    result, err := ToJson(aMap)
-    fmt.Printf("%q", jsonStr) //"{\"a\":1,\"b\":2,\"c\":3}"
+
+    if err != nil {
+        fmt.Printf("%v", err)
+    }
+
+    fmt.Println(result)
+
+    // Output:
+    // {"a":1,"b":2,"c":3}
 }
 ```
 
-
-
 ### <span id="ToMap">ToMap</span>
 
-<p>将切片转为map</p>
+<p>将切片转为map。</p>
 
 <b>函数签名:</b>
 
 ```go
 func ToMap[T any, K comparable, V any](array []T, iteratee func(T) (K, V)) map[K]V
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 package main
@@ -361,26 +394,28 @@ func main() {
         {name: "Hello", code: 100},
         {name: "Hi", code: 101},
     }
+
     result := convertor.ToMap(messages, func(msg Message) (int, string) {
         return msg.code, msg.name
     })
 
-    fmt.Println(result) //{100: "Hello", 101: "Hi"}
+    fmt.Println(result)
+
+    // Output:
+    // map[100:Hello 101:Hi]
 }
 ```
 
-
-
 ### <span id="ToPointer">ToPointer</span>
 
-<p>返回传入值的指针</p>
+<p>返回传入值的指针。</p>
 
 <b>函数签名:</b>
 
 ```go
 func ToPointer[T any](value T) *T
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 package main
@@ -392,22 +427,23 @@ import (
 
 func main() {
     result := convertor.ToPointer(123)
-    fmt.Println(*result) //123
+    fmt.Println(*result) 
+    
+    // Output:
+    // 123
 }
 ```
 
-
-
 ### <span id="ToString">ToString</span>
 
-<p>将值转换为字符串，对于数字、字符串、[]byte，将转换为字符串。 对于其他类型（切片、映射、数组、结构）将调用 json.Marshal</p>
+<p>将值转换为字符串，对于数字、字符串、[]byte，将转换为字符串。 对于其他类型（切片、映射、数组、结构体）将调用 json.Marshal</p>
 
 <b>函数签名:</b>
 
 ```go
 func ToString(value any) string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 package main
@@ -418,24 +454,43 @@ import (
 )
 
 func main() {
-    fmt.Printf("%q", convertor.ToString(1)) //"1"
+    result1 := convertor.ToString("")
-    fmt.Printf("%q", convertor.ToString(1.1)) //"1.1"
+    result2 := convertor.ToString(nil)
-    fmt.Printf("%q", convertor.ToString([]int{1, 2, 3})) //"[1,2,3]"
+    result3 := convertor.ToString(0)
+    result4 := convertor.ToString(1.23)
+    result5 := convertor.ToString(true)
+    result6 := convertor.ToString(false)
+    result7 := convertor.ToString([]int{1, 2, 3})
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+    fmt.Println(result7)
+
+    // Output:
+    //
+    //
+    // 0
+    // 1.23
+    // true
+    // false
+    // [1,2,3]
 }
 ```
 
-
-
 ### <span id="StructToMap">StructToMap</span>
 
-<p>将struct转成map，只会转换struct中可导出的字段。struct中导出字段需要设置json tag标记</p>
+<p>将struct转成map，只会转换struct中可导出的字段。struct中导出字段需要设置json tag标记。</p>
 
 <b>函数签名:</b>
 
 ```go
 func StructToMap(value any) (map[string]any, error)
 ```
-<b>列子:</b>
+<b>示例:</b>
 
 ```go
 package main
@@ -456,22 +511,23 @@ func main() {
     }
     pm, _ := convertor.StructToMap(p)
 
-    fmt.Printf("type: %T, value: %s", pm, pm) //type: map[string]interface {}, value: map[name:test]
+    fmt.Println(pm)
+
+    // Output:
+    // map[name:test]
 }
 ```
 
-
-
 ### <span id="MapToSlice">MapToSlice</span>
 
-<p>map中key和value执行函数iteratee后，转为切片</p>
+<p>map中key和value执行函数iteratee后，转为切片。</p>
 
 <b>函数签名:</b>
 
 ```go
 func MapToSlice[T any, K comparable, V any](aMap map[K]V, iteratee func(K, V) T) []T
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 package main
@@ -491,18 +547,16 @@ func main() {
 }
 ```
 
-
-
 ### <span id="EncodeByte">EncodeByte</span>
 
-<p>将data编码成字节切片</p>
+<p>将data编码成字节切片。</p>
 
 <b>函数签名:</b>
 
 ```go
 func EncodeByte(data any) ([]byte, error)
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 package main
@@ -514,22 +568,23 @@ import (
 
 func main() {
     byteData, _ := convertor.EncodeByte("abc")
-    fmt.Println(byteData) //[]byte{6, 12, 0, 3, 97, 98, 99}
+    fmt.Println(byteData)
+
+    // Output:
+    // [6 12 0 3 97 98 99]
 }
 ```
 
-
-
 ### <span id="DecodeByte">DecodeByte</span>
 
-<p>解码字节切片到目标对象，目标对象需要传入一个指针实例</p>
+<p>解码字节切片到目标对象，目标对象需要传入一个指针实例。</p>
 
 <b>函数签名:</b>
 
 ```go
 func DecodeByte(data []byte, target any) error
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 package main
@@ -541,8 +596,16 @@ import (
 
 func main() {
     var result string
-	byteData := []byte{6, 12, 0, 3, 97, 98, 99}
+    byteData := []byte{6, 12, 0, 3, 97, 98, 99}
-	convertor.DecodeByte(byteData, &result)
+    
-    fmt.Println(result) //"abc"
+    err := convertor.DecodeByte(byteData, &result)
+    if err != nil {
+        return
+    }
+
+    fmt.Println(result)
+    
+    // Output:
+    // abc
 }
 ```

docs/cryptor.md

@@ -61,8 +61,6 @@ import (
 
 ## Documentation
 
-
-
 ### <span id="AesEcbEncrypt">AesEcbEncrypt</span>
 
 <p>Encrypt data with key use AES ECB algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -83,16 +81,19 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefghijklmnop"
-    encrypted := cryptor.AesEcbEncrypt([]byte(data), []byte(key))
 
-    fmt.Println(string(encrypted))
+    encrypted := cryptor.AesEcbEncrypt([]byte(data), []byte(key))
+    decrypted := cryptor.AesEcbDecrypt(encrypted, []byte(key))
+
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
 
-
-
 ### <span id="AesEcbDecrypt">AesEcbDecrypt</span>
 
 <p>Decrypt data with key use AES ECB algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -113,16 +114,19 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefghijklmnop"
+
     encrypted := cryptor.AesEcbEncrypt([]byte(data), []byte(key))
     decrypted := cryptor.AesEcbDecrypt(encrypted, []byte(key))
-    fmt.Println(string(decrypted)) //hello world
+
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
 
-
-
 ### <span id="AesCbcEncrypt">AesCbcEncrypt</span>
 
 <p>Encrypt data with key use AES CBC algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -143,16 +147,19 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefghijklmnop"
-    encrypted := cryptor.AesCbcEncrypt([]byte(data), []byte(key))
 
-    fmt.Println(string(encrypted))
+    encrypted := cryptor.AesCbcEncrypt([]byte(data), []byte(key))
+    decrypted := cryptor.AesCbcDecrypt(encrypted, []byte(key))
+
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
 
-
-
 ### <span id="AesCbcDecrypt">AesCbcDecrypt</span>
 
 <p>Decrypt data with key use AES CBC algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -174,16 +181,19 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefghijklmnop"
+
     encrypted := cryptor.AesCbcEncrypt([]byte(data), []byte(key))
     decrypted := cryptor.AesCbcDecrypt(encrypted, []byte(key))
-    fmt.Println(string(decrypted)) //hello world
+
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
 
-
-
 ### <span id="AesCtrCrypt">AesCtrCrypt</span>
 
 <p>Encrypt or decrypt data with key use AES CTR algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -205,17 +215,19 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefghijklmnop"
+
     encrypted := cryptor.AesCtrCrypt([]byte(data), []byte(key))
     decrypted := cryptor.AesCtrCrypt(encrypted, []byte(key))
 
-    fmt.Println(string(decrypted)) //hello world
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
 
-
-
 ### <span id="AesCfbEncrypt">AesCfbEncrypt</span>
 
 <p>Encrypt data with key use AES CFB algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -237,15 +249,19 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefghijklmnop"
+
     encrypted := cryptor.AesCfbEncrypt([]byte(data), []byte(key))
-    fmt.Println(string(encrypted))
+    decrypted := cryptor.AesCfbDecrypt(encrypted, []byte(key))
+
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
 
-
-
 ### <span id="AesCfbDecrypt">AesCfbDecrypt</span>
 
 <p>Decrypt data with key use AES CBC algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -267,16 +283,19 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefghijklmnop"
+
     encrypted := cryptor.AesCfbEncrypt([]byte(data), []byte(key))
     decrypted := cryptor.AesCfbDecrypt(encrypted, []byte(key))
-    fmt.Println(string(decrypted)) //hello world
+
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
 
-
-
 ### <span id="AesOfbEncrypt">AesOfbEncrypt</span>
 
 <p>Enecrypt data with key use AES OFB algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -298,15 +317,18 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefghijklmnop"
+
     encrypted := cryptor.AesOfbEncrypt([]byte(data), []byte(key))
-    fmt.Println(string(encrypted))
+    decrypted := cryptor.AesCfbDecrypt(encrypted, []byte(key))
+
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
-
-
-
 ### <span id="AesCfbDecrypt">AesOfbDecrypt</span>
 
 <p>Decrypt data with key use AES OFB algorithm. Length of `key` param should be 16, 24 or 32.</p>
@@ -328,17 +350,19 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefghijklmnop"
+
     encrypted := cryptor.AesOfbEncrypt([]byte(data), []byte(key))
-    decrypted := cryptor.AesOfbDecrypt(encrypted, []byte(key))
+    decrypted := cryptor.AesCfbDecrypt(encrypted, []byte(key))
-    
+
-    fmt.Println(string(decrypted)) //hello world
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
 
-
-
 ### <span id="Base64StdEncode">Base64StdEncode</span>
 
 <p>Encode string with base64 encoding.</p>
@@ -359,13 +383,13 @@ import (
 )
 
 func main() {
-    base64Str := cryptor.Base64StdEncode("hello world")
+    base64Str := cryptor.Base64StdEncode("hello")
-    fmt.Println(base64Str) //aGVsbG8gd29ybGQ=
+    fmt.Println(base64Str)
+
+    // Output:
+    // aGVsbG8=
 }
 ```
-
-
-
 ### <span id="Base64StdDecode">Base64StdDecode</span>
 
 <p>Decode a base64 encoded string.</p>
@@ -387,13 +411,14 @@ import (
 )
 
 func main() {
-    str := cryptor.Base64StdDecode("aGVsbG8gd29ybGQ=")
+    str := cryptor.Base64StdDecode("aGVsbG8=")
-    fmt.Println(str) //hello world
+    fmt.Println(str)
+
+    // Output:
+    // hello
 }
 ```
 
-
-
 ### <span id="DesEcbEncrypt">DesEcbEncrypt</span>
 
 <p>Encrypt data with key use DES ECB algorithm. Length of `key` param should be 8.</p>
@@ -415,16 +440,19 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefgh"
+
     encrypted := cryptor.DesEcbEncrypt([]byte(data), []byte(key))
 
-    fmt.Println(string(encrypted))
+    decrypted := cryptor.DesEcbDecrypt(encrypted, []byte(key))
+
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
-
-
-
 ### <span id="DesEcbDecrypt">DesEcbDecrypt</span>
 
 <p>Decrypt data with key use DES ECB algorithm. Length of `key` param should be 8.</p>
@@ -446,17 +474,20 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefgh"
-    encrypted := cryptor.DesEcbEncrypt([]byte(data), []byt(key)
+
+    encrypted := cryptor.DesEcbEncrypt([]byte(data), []byte(key))
+
     decrypted := cryptor.DesEcbDecrypt(encrypted, []byte(key))
-  
+
-    fmt.Println(string(decrypted)) //hello world
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
 
-
-
 ### <span id="DesCbcEncrypt">DesCbcEncrypt</span>
 
 <p>Encrypt data with key use DES CBC algorithm. Length of `key` param should be 8.</p>
@@ -478,16 +509,19 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefgh"
-    encrypted := cryptor.DesCbcEncrypt([]byte(data), []byt(key)
 
-    fmt.Println(string(encrypted))
+    encrypted := cryptor.DesCbcEncrypt([]byte(data), []byte(key))
+    decrypted := cryptor.DesCbcDecrypt(encrypted, []byte(key))
+
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
 
-
-
 ### <span id="DesCbcDecrypt">DesCbcDecrypt</span>
 
 <p>Decrypt data with key use DES CBC algorithm. Length of `key` param should be 8.</p>
@@ -509,17 +543,18 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefgh"
-    encrypted := cryptor.DesCbcEncrypt([]byte(data), []byt(key)
+
-	decrypted := cryptor.DesCbcDecrypt(encrypted, []byte(key))
+    encrypted := cryptor.DesCbcEncrypt([]byte(data), []byte(key))
-    
+    decrypted := cryptor.DesCbcDecrypt(encrypted, []byte(key))
-    fmt.Println(string(decrypted)) //hello world
+
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
-
-
-
 ### <span id="DesCtrCrypt">DesCtrCrypt</span>
 
 <p>Encrypt or decrypt data with key use DES CTR algorithm. Length of `key` param should be 8.</p>
@@ -541,17 +576,19 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefgh"
+
     encrypted := cryptor.DesCtrCrypt([]byte(data), []byte(key))
     decrypted := cryptor.DesCtrCrypt(encrypted, []byte(key))
 
-    fmt.Println(string(decrypted)) //hello world
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
 
-
-
 ### <span id="DesCfbEncrypt">DesCfbEncrypt</span>
 
 <p>Encrypt data with key use DES CFB algorithm. Length of `key` param should be 8.</p>
@@ -573,15 +610,18 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefgh"
-    encrypted := cryptor.DesCfbEncrypt([]byte(data), []byt(key)
+
-    fmt.Println(string(encrypted))
+    encrypted := cryptor.DesCfbEncrypt([]byte(data), []byte(key))
+    decrypted := cryptor.DesCfbDecrypt(encrypted, []byte(key))
+
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
-
-
-
 ### <span id="DesCfbDecrypt">DesCfbDecrypt</span>
 
 <p>Decrypt data with key use DES CBC algorithm. Length of `key` param should be 8.</p>
@@ -603,16 +643,18 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefgh"
-    encrypted := cryptor.DesCfbEncrypt([]byte(data), []byt(key)
+
+    encrypted := cryptor.DesCfbEncrypt([]byte(data), []byte(key))
     decrypted := cryptor.DesCfbDecrypt(encrypted, []byte(key))
-    fmt.Println(string(decrypted)) //hello world
+
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
-
-
-
 ### <span id="DesOfbEncrypt">DesOfbEncrypt</span>
 
 <p>Enecrypt data with key use DES OFB algorithm. Length of `key` param should be 8.</p>
@@ -634,15 +676,18 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefgh"
+
     encrypted := cryptor.DesOfbEncrypt([]byte(data), []byte(key))
-    fmt.Println(string(encrypted))
+    decrypted := cryptor.DesOfbDecrypt(encrypted, []byte(key))
+
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
-
-
-
 ### <span id="DesOfbDecrypt">DesOfbDecrypt</span>
 
 <p>Decrypt data with key use DES OFB algorithm. Length of `key` param should be 8.</p>
@@ -664,17 +709,19 @@ import (
 )
 
 func main() {
-    data := "hello world"
+    data := "hello"
     key := "abcdefgh"
+
     encrypted := cryptor.DesOfbEncrypt([]byte(data), []byte(key))
     decrypted := cryptor.DesOfbDecrypt(encrypted, []byte(key))
-    
+
-    fmt.Println(string(decrypted)) //hello world
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
 
-
-
 ### <span id="HmacMd5">HmacMd5</span>
 
 <p>Get the md5 hmac hash of string.</p>
@@ -696,13 +743,16 @@ import (
 )
 
 func main() {
-  	s := cryptor.HmacMd5("hello world", "12345"))
+      str := "hello"
-  	fmt.Println(s) //5f4c9faaff0a1ad3007d9ddc06abe36d
+    key := "12345"
+
+    hms := cryptor.HmacMd5(str, key)
+    fmt.Println(hms)
+
+    // Output:
+    // e834306eab892d872525d4918a7a639a
 }
 ```
-
-
-
 ### <span id="HmacSha1">HmacSha1</span>
 
 <p>Get the sha1 hmac hash of string.</p>
@@ -724,13 +774,16 @@ import (
 )
 
 func main() {
-    s := cryptor.HmacSha1("hello world", "12345"))
+    str := "hello"
-    fmt.Println(s) //3826f812255d8683f051ee97346d1359234d5dbd
+    key := "12345"
+
+    hms := cryptor.HmacSha1(str, key)
+    fmt.Println(hms)
+
+    // Output:
+    // 5c6a9db0cccb92e36ed0323fd09b7f936de9ace0
 }
 ```
-
-
-
 ### <span id="HmacSha256">HmacSha256</span>
 
 <p>Get the sha256 hmac hash of string</p>
@@ -752,13 +805,17 @@ import (
 )
 
 func main() {
-    s := cryptor.HmacSha256("hello world", "12345"))
+    str := "hello"
-    fmt.Println(s) //9dce2609f2d67d41f74c7f9efc8ccd44370d41ad2de52982627588dfe7289ab8
+    key := "12345"
+
+    hms := cryptor.HmacSha256(str, key)
+    fmt.Println(hms)
+
+    // Output:
+    // 315bb93c4e989862ba09cb62e05d73a5f376cb36f0d786edab0c320d059fde75
 }
 ```
 
-
-
 ### <span id="HmacSha512">HmacSha512</span>
 
 <p>Get the sha512 hmac hash of string.</p>
@@ -780,14 +837,18 @@ import (
 )
 
 func main() {
-    s := cryptor.HmacSha512("hello world", "12345"))
+    str := "hello"
-    fmt.Println(s) 
+    key := "12345"
- //5b1563ac4e9b49c9ada8ccb232588fc4f0c30fd12f756b3a0b95af4985c236ca60925253bae10ce2c6bf9af1c1679b51e5395ff3d2826c0a2c7c0d72225d4175
+
+    hms := cryptor.HmacSha512(str, key)
+    fmt.Println(hms)
+
+    // Output:
+    // dd8f1290a9dd23d354e2526d9a2e9ce8cffffdd37cb320800d1c6c13d2efc363288376a196c5458daf53f8e1aa6b45a6d856303d5c0a2064bff9785861d48cfc
 }
 ```
 
 
-
 ### <span id="Md5String">Md5String</span>
 
 <p>Get the md5 value of string.</p>
@@ -809,13 +870,16 @@ import (
 )
 
 func main() {
-    s := cryptor.Md5String("hello"))
+    str := "hello"
-    fmt.Println(s) //5d41402abc4b2a76b9719d911017c592
+
+    md5Str := cryptor.Md5String(str)
+    fmt.Println(md5Str)
+
+    // Output:
+    // 5d41402abc4b2a76b9719d911017c592
 }
 ```
 
-
-
 ### <span id="Md5File">Md5File</span>
 
 <p>Get the md5 value of file.</p>
@@ -842,8 +906,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="Sha1">Sha1</span>
 
 <p>Get the sha1 value of string.</p>
@@ -865,13 +927,16 @@ import (
 )
 
 func main() {
-    s := cryptor.Sha1("hello world"))
+    str := "hello"
-    fmt.Println(s) //2aae6c35c94fcfb415dbe95f408b9ce91ee846ed
+
+    result := cryptor.Sha1(str)
+    fmt.Println(result)
+
+    // Output:
+    // aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d
 }
 ```
 
-
-
 ### <span id="Sha256">Sha256</span>
 
 <p>Get the sha256 value of string.</p>
@@ -893,13 +958,16 @@ import (
 )
 
 func main() {
-    s := cryptor.Sha256("hello world"))
+    str := "hello"
-    fmt.Println(s) //b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9
+
+    result := cryptor.Sha256(str)
+    fmt.Println(result)
+
+    // Output:
+    // 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824
 }
 ```
 
-
-
 ### <span id="Sha512">Sha512</span>
 
 <p>Get the sha512 value of string.</p>
@@ -921,13 +989,16 @@ import (
 )
 
 func main() {
-    s := cryptor.Sha512("hello world"))
+    str := "hello"
-    fmt.Println(s) //309ecc489c12d6eb4cc40f50c902f2b4d0ed77ee511a7c7a9bcd3ca86d4cd86f989dd35bc5ff499670da34255b45b0cfd830e81f605dcf7dc5542e93ae9cd76f
+
+    result := cryptor.Sha512(str)
+    fmt.Println(result)
+
+    // Output:
+    // 9b71d224bd62f3785d96d46ad3ea3d73319bfbc2890caadae2dff72519673ca72323c3d99ba5c11d7c7acc6e14b8c5da0c4663475c2e5c3adef46f73bcdec043
 }
 ```
 
-
-
 ### <span id="GenerateRsaKey">GenerateRsaKey</span>
 
 <p>Create the rsa public and private key file in current directory.</p>
@@ -956,8 +1027,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="RsaEncrypt">RsaEncrypt</span>
 
 <p>Encrypt data with public key file useing ras algorithm.</p>
@@ -981,19 +1050,21 @@ import (
 func main() {
     err := cryptor.GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
     if err != nil {
-        fmt.Println(err)
+        return
     }
-  	
+      
-    data := []byte("hello world")
+    data := []byte("hello")
     encrypted := cryptor.RsaEncrypt(data, "rsa_public.pem")
     decrypted := cryptor.RsaDecrypt(encrypted, "rsa_private.pem")
-  	
+      
-    fmt.Println(string(decrypted)) //hello world
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
 
 
-
 ### <span id="RsaDecrypt">RsaDecrypt</span>
 
 <p>Decrypt data with private key file useing ras algorithm.</p>
@@ -1017,14 +1088,17 @@ import (
 func main() {
     err := cryptor.GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
     if err != nil {
-        fmt.Println(err)
+        return
     }
-  	
+      
-    data := []byte("hello world")
+    data := []byte("hello")
     encrypted := cryptor.RsaEncrypt(data, "rsa_public.pem")
     decrypted := cryptor.RsaDecrypt(encrypted, "rsa_private.pem")
-  	
+      
-    fmt.Println(string(decrypted)) //hello world
+    fmt.Println(string(decrypted))
+
+    // Output:
+    // hello
 }
 ```
 

docs/datetime.md

@@ -1,16 +1,18 @@
 # Datetime
+
 Package datetime supports date and time format and compare.
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Source:
 
-- [https://github.com/duke-git/lancet/blob/main/datetime/datetime.go](https://github.com/duke-git/lancet/blob/main/datetime/datetime.go)
+-   [https://github.com/duke-git/lancet/blob/main/datetime/datetime.go](https://github.com/duke-git/lancet/blob/main/datetime/datetime.go)
-- [https://github.com/duke-git/lancet/blob/main/datetime/conversion.go](https://github.com/duke-git/lancet/blob/main/datetime/conversion.go)
+-   [https://github.com/duke-git/lancet/blob/main/datetime/conversion.go](https://github.com/duke-git/lancet/blob/main/datetime/conversion.go)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Usage:
+
 ```go
 import (
     "github.com/duke-git/lancet/v2/datetime"
@@ -20,66 +22,67 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## Index
-- [AddDay](#AddDay)
-- [AddHour](#AddHour)
-- [AddMinute](#AddMinute)
-- [BeginOfMinute](#BeginOfMinute)
-- [BeginOfHour](#BeginOfHour)
-- [BeginOfDay](#BeginOfDay)
-- [BeginOfWeek](#BeginOfWeek)
-- [BeginOfMonth](#BeginOfMonth)
-- [BeginOfYear](#BeginOfYear)
-- [EndOfMinute](#EndOfMinute)
-- [EndOfHour](#EndOfHour)
-- [EndOfDay](#EndOfDay)
-- [EndOfWeek](#EndOfWeek)
-- [EndOfMonth](#EndOfMonth)
-- [EndOfYear](#EndOfYear)
-- [GetNowDate](#GetNowDate)
-- [GetNowTime](#GetNowTime)
-- [GetNowDateTime](#GetNowDateTime)
-- [GetZeroHourTimestamp](#GetZeroHourTimestamp)
-- [GetNightTimestamp](#GetNightTimestamp)
-- [FormatTimeToStr](#FormatTimeToStr)
-- [FormatStrToTime](#FormatStrToTime)
-- [NewUnixNow](#NewUnixNow)
-- [NewUnix](#NewUnix)
-- [NewFormat](#NewFormat)
-- [NewISO8601](#NewISO8601)
-- [ToUnix](#ToUnix)
-- [ToFormat](#ToFormat)
-- [ToFormatForTpl](#ToFormatForTpl)
-- [ToIso8601](#ToIso8601)
-
 
+-   [AddDay](#AddDay)
+-   [AddHour](#AddHour)
+-   [AddMinute](#AddMinute)
+-   [BeginOfMinute](#BeginOfMinute)
+-   [BeginOfHour](#BeginOfHour)
+-   [BeginOfDay](#BeginOfDay)
+-   [BeginOfWeek](#BeginOfWeek)
+-   [BeginOfMonth](#BeginOfMonth)
+-   [BeginOfYear](#BeginOfYear)
+-   [EndOfMinute](#EndOfMinute)
+-   [EndOfHour](#EndOfHour)
+-   [EndOfDay](#EndOfDay)
+-   [EndOfWeek](#EndOfWeek)
+-   [EndOfMonth](#EndOfMonth)
+-   [EndOfYear](#EndOfYear)
+-   [GetNowDate](#GetNowDate)
+-   [GetNowTime](#GetNowTime)
+-   [GetNowDateTime](#GetNowDateTime)
+-   [GetZeroHourTimestamp](#GetZeroHourTimestamp)
+-   [GetNightTimestamp](#GetNightTimestamp)
+-   [FormatTimeToStr](#FormatTimeToStr)
+-   [FormatStrToTime](#FormatStrToTime)
+-   [NewUnixNow](#NewUnixNow)
+-   [NewUnix](#NewUnix)
+-   [NewFormat](#NewFormat)
+-   [NewISO8601](#NewISO8601)
+-   [ToUnix](#ToUnix)
+-   [ToFormat](#ToFormat)
+-   [ToFormatForTpl](#ToFormatForTpl)
+-   [ToIso8601](#ToIso8601)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Documentation
 
 ## Note:
-1. 'format' string param in func FormatTimeToStr and FormatStrToTime function should be one of flows:
-- yyyy-mm-dd hh:mm:ss
-- yyyy-mm-dd hh:mm
-- yyyy-mm-dd hh
-- yyyy-mm-dd
-- yyyy-mm
-- mm-dd
-- dd-mm-yy hh:mm:ss
-- yyyy/mm/dd hh:mm:ss
-- yyyy/mm/dd hh:mm
-- yyyy-mm-dd hh
-- yyyy/mm/dd
-- yyyy/mm
-- mm/dd
-- dd/mm/yy hh:mm:ss
-- yyyy
-- mm
-- hh:mm:ss
-- mm:ss
 
+1. 'format' string param in func FormatTimeToStr and FormatStrToTime function should be one of flows:
+
+-   yyyy-mm-dd hh:mm:ss
+-   yyyy-mm-dd hh:mm
+-   yyyy-mm-dd hh
+-   yyyy-mm-dd
+-   yyyy-mm
+-   mm-dd
+-   dd-mm-yy hh:mm:ss
+-   yyyy/mm/dd hh:mm:ss
+-   yyyy/mm/dd hh:mm
+-   yyyy-mm-dd hh
+-   yyyy/mm/dd
+-   yyyy/mm
+-   mm/dd
+-   dd/mm/yy hh:mm:ss
+-   yyyy
+-   mm
+-   hh:mm:ss
+-   mm:ss
 
 ### <span id="AddDay">AddDay</span>
+
 <p>Add or sub days to time.</p>
 
 <b>Signature:</b>
@@ -87,6 +90,7 @@ import (
 ```go
 func AddDay(t time.Time, day int64) time.Time
 ```
+
 <b>Example:</b>
 
 ```go
@@ -100,15 +104,24 @@ import (
 
 func main() {
     now := time.Now()
-    after2Days := datetime.AddDay(now, 2)
-    before2Days := datetime.AddDay(now, -2)
 
-    fmt.Println(after2Days, before2Days)
+    tomorrow := datetime.AddDay(now, 1)
+    diff1 := tomorrow.Sub(now)
+
+    yesterday := datetime.AddDay(now, -1)
+    diff2 := yesterday.Sub(now)
+
+    fmt.Println(diff1)
+    fmt.Println(diff2)
+
+    // Output:
+    // 24h0m0s
+    // -24h0m0s
 }
 ```
 
-
 ### <span id="AddHour">AddHour</span>
+
 <p>Add or sub hours to time.</p>
 
 <b>Signature:</b>
@@ -116,6 +129,7 @@ func main() {
 ```go
 func AddHour(t time.Time, hour int64) time.Time
 ```
+
 <b>Example:</b>
 
 ```go
@@ -129,14 +143,24 @@ import (
 
 func main() {
     now := time.Now()
-    after2Hours := datetime.AddHour(now, 2)
-    before2Hours := datetime.AddHour(now, -2)
 
-    fmt.Println(after2Hours, after2Hours)
+    after2Hours := datetime.AddHour(now, 2)
+    diff1 := after2Hours.Sub(now)
+
+    before2Hours := datetime.AddHour(now, -2)
+    diff2 := before2Hours.Sub(now)
+
+    fmt.Println(diff1)
+    fmt.Println(diff2)
+
+    // Output:
+    // 2h0m0s
+    // -2h0m0s
 }
 ```
 
 ### <span id="AddMinute">AddMinute</span>
+
 <p>Add or sub minutes to time.</p>
 
 <b>Signature:</b>
@@ -144,6 +168,7 @@ func main() {
 ```go
 func AddMinute(t time.Time, minute int64) time.Time
 ```
+
 <b>Example:</b>
 
 ```go
@@ -157,14 +182,24 @@ import (
 
 func main() {
     now := time.Now()
-    after2Minute := datetime.AddMinute(now, 2)
-    before2Minute := datetime.AddMinute(now, -2)
 
-    fmt.Println(after2Minute, before2Minute)
+    after2Minutes := datetime.AddMinute(now, 2)
+    diff1 := after2Minutes.Sub(now)
+
+    before2Minutes := datetime.AddMinute(now, -2)
+    diff2 := before2Minutes.Sub(now)
+
+    fmt.Println(diff1)
+    fmt.Println(diff2)
+
+    // Output:
+    // 2m0s
+    // -2m0s
 }
 ```
 
 ### <span id="BeginOfMinute">BeginOfMinute</span>
+
 <p>Return beginning minute time of day.</p>
 
 <b>Signature:</b>
@@ -172,6 +207,7 @@ func main() {
 ```go
 func BeginOfMinute(t time.Time) time.Time
 ```
+
 <b>Example:</b>
 
 ```go
@@ -184,13 +220,18 @@ import (
 )
 
 func main() {
-    td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
+    input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
-    bm := datetime.BeginOfMinute(td)
+    result := datetime.BeginOfMinute(input)
-    fmt.Println(bm) //2022-02-15 15:48:00 +0800 CST
+
+    fmt.Println(result)
+
+    // Output:
+    // 2023-01-08 18:50:00 +0000 UTC
 }
 ```
 
 ### <span id="BeginOfHour">BeginOfHour</span>
+
 <p>Return zero time of day.</p>
 
 <b>Signature:</b>
@@ -198,6 +239,7 @@ func main() {
 ```go
 func BeginOfHour(t time.Time) time.Time
 ```
+
 <b>Example:</b>
 
 ```go
@@ -210,13 +252,18 @@ import (
 )
 
 func main() {
-    td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
+    input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
-    bm := datetime.BeginOfHour(td)
+    result := datetime.BeginOfHour(input)
-    fmt.Println(bm) //2022-02-15 15:00:00 +0800 CST
+
+    fmt.Println(result)
+
+    // Output:
+    // 2023-01-08 18:00:00 +0000 UTC
 }
 ```
 
 ### <span id="BeginOfDay">BeginOfDay</span>
+
 <p>Return begin time of day.</p>
 
 <b>Signature:</b>
@@ -224,6 +271,7 @@ func main() {
 ```go
 func BeginOfDay(t time.Time) time.Time
 ```
+
 <b>Example:</b>
 
 ```go
@@ -236,15 +284,18 @@ import (
 )
 
 func main() {
-    td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
+    input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
-    bm := datetime.BeginOfDay(td)
+    result := datetime.BeginOfDay(input)
-    fmt.Println(bm) //2022-02-15 00:00:00 +0800 CST
+
+    fmt.Println(result)
+
+    // Output:
+    // 2023-01-08 00:00:00 +0000 UTC
 }
 ```
 
-
-
 ### <span id="BeginOfWeek">BeginOfWeek</span>
+
 <p>Return beginning time of week, week begin from Sunday.</p>
 
 <b>Signature:</b>
@@ -252,6 +303,7 @@ func main() {
 ```go
 func BeginOfWeek(t time.Time, beginFrom ...time.Weekday) time.Time
 ```
+
 <b>Example:</b>
 
 ```go
@@ -264,15 +316,18 @@ import (
 )
 
 func main() {
-    td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
+    input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
-    bm := datetime.BeginOfWeek(td)
+    result := datetime.BeginOfWeek(input)
-    fmt.Println(bm) //2022-02-13 00:00:00 +0800 CST
+
+    fmt.Println(result)
+
+    // Output:
+    // 2023-01-08 00:00:00 +0000 UTC
 }
 ```
 
-
-
 ### <span id="BeginOfMonth">BeginOfMonth</span>
+
 <p>Return beginning time of month</p>
 
 <b>Signature:</b>
@@ -280,6 +335,7 @@ func main() {
 ```go
 func BeginOfMonth(t time.Time) time.Time
 ```
+
 <b>Example:</b>
 
 ```go
@@ -292,14 +348,18 @@ import (
 )
 
 func main() {
-    td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
+    input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
-    bm := datetime.BeginOfMonth(td)
+    result := datetime.BeginOfMonth(input)
-    fmt.Println(bm) //2022-02-01 00:00:00 +0800 CST
+
+    fmt.Println(result)
+
+    // Output:
+    // 2023-01-01 00:00:00 +0000 UTC
 }
 ```
 
-
 ### <span id="BeginOfYear">BeginOfYear</span>
+
 <p>Return beginning time of year.</p>
 
 <b>Signature:</b>
@@ -307,6 +367,7 @@ func main() {
 ```go
 func BeginOfYear(t time.Time) time.Time
 ```
+
 <b>Example:</b>
 
 ```go
@@ -319,15 +380,18 @@ import (
 )
 
 func main() {
-    td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
+    input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
-    bm := datetime.BeginOfYear(td)
+    result := datetime.BeginOfYear(input)
-    fmt.Println(bm) //2022-01-01 00:00:00 +0800 CST
+
+    fmt.Println(result)
+
+    // Output:
+    // 2023-01-01 00:00:00 +0000 UTC
 }
 ```
 
-
-
 ### <span id="EndOfMinute">EndOfMinute</span>
+
 <p>Return end time minute of day.</p>
 
 <b>Signature:</b>
@@ -335,6 +399,7 @@ func main() {
 ```go
 func EndOfMinute(t time.Time) time.Time
 ```
+
 <b>Example:</b>
 
 ```go
@@ -347,13 +412,18 @@ import (
 )
 
 func main() {
-    td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
+    input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
-    bm := datetime.EndOfMinute(td)
+    result := datetime.EndOfMinute(input)
-    fmt.Println(bm) //2022-02-15 15:48:59.999999999 +0800 CST
+
+    fmt.Println(result)
+
+    // Output:
+    // 2023-01-08 18:50:59.999999999 +0000 UTC
 }
 ```
 
 ### <span id="EndOfHour">EndOfHour</span>
+
 <p>Return end time hour of day.</p>
 
 <b>Signature:</b>
@@ -361,6 +431,7 @@ func main() {
 ```go
 func EndOfHour(t time.Time) time.Time
 ```
+
 <b>Example:</b>
 
 ```go
@@ -373,13 +444,18 @@ import (
 )
 
 func main() {
-    td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
+    input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
-    bm := datetime.EndOfHour(td)
+    result := datetime.EndOfHour(input)
-    fmt.Println(bm) //2022-02-15 15:59:59.999999999 +0800 CST
+
+    fmt.Println(result)
+
+    // Output:
+    // 2023-01-08 18:59:59.999999999 +0000 UTC
 }
 ```
 
 ### <span id="EndOfDay">EndOfDay</span>
+
 <p>Return end time hour of day.</p>
 
 <b>Signature:</b>
@@ -387,6 +463,7 @@ func main() {
 ```go
 func EndOfDay(t time.Time) time.Time
 ```
+
 <b>Example:</b>
 
 ```go
@@ -399,15 +476,18 @@ import (
 )
 
 func main() {
-    td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
+    input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
-    bm := datetime.EndOfDay(td)
+    result := datetime.EndOfDay(input)
-    fmt.Println(bm) //2022-02-15 23:59:59.999999999 +0800 CST
+
+    fmt.Println(result)
+
+    // Output:
+    // 2023-01-08 23:59:59.999999999 +0000 UTC
 }
 ```
 
-
-
 ### <span id="EndOfWeek">EndOfWeek</span>
+
 <p>Return end time of week, week end with Saturday.</p>
 
 <b>Signature:</b>
@@ -415,6 +495,7 @@ func main() {
 ```go
 func EndOfWeek(t time.Time, endWith ...time.Weekday) time.Time
 ```
+
 <b>Example:</b>
 
 ```go
@@ -427,15 +508,18 @@ import (
 )
 
 func main() {
-    td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
+    input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
-    bm := datetime.EndOfWeek(td)
+    result := datetime.EndOfWeek(input)
-    fmt.Println(bm) //2022-02-19 23:59:59.999999999 +0800 CST
+
+    fmt.Println(result)
+
+    // Output:
+    // 2023-01-14 23:59:59.999999999 +0000 UTC
 }
 ```
 
-
-
 ### <span id="EndOfMonth">EndOfMonth</span>
+
 <p>Return end time of month</p>
 
 <b>Signature:</b>
@@ -443,6 +527,7 @@ func main() {
 ```go
 func EndOfMonth(t time.Time) time.Time
 ```
+
 <b>Example:</b>
 
 ```go
@@ -455,14 +540,18 @@ import (
 )
 
 func main() {
-    td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
+    input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
-    bm := datetime.EndOfMonth(td)
+    result := datetime.EndOfMonth(input)
-    fmt.Println(bm) //2022-02-28 23:59:59.999999999 +0800 CST
+
+    fmt.Println(result)
+
+    // Output:
+    // 2023-01-31 23:59:59.999999999 +0000 UTC
 }
 ```
 
-
 ### <span id="EndOfYear">EndOfYear</span>
+
 <p>Return beginning time of year.</p>
 
 <b>Signature:</b>
@@ -470,6 +559,7 @@ func main() {
 ```go
 func EndOfYear(t time.Time) time.Time
 ```
+
 <b>Example:</b>
 
 ```go
@@ -482,14 +572,18 @@ import (
 )
 
 func main() {
-    td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
+    input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
-    bm := datetime.EndOfYear(td)
+    result := datetime.EndOfYear(input)
-    fmt.Println(bm) //2022-12-31 23:59:59.999999999 +0800 CST
+
+    fmt.Println(result)
+
+    // Output:
+    // 2023-12-31 23:59:59.999999999 +0000 UTC
 }
 ```
 
-
 ### <span id="GetNowDate">GetNowDate</span>
+
 <p>Get current date string, format is yyyy-mm-dd.</p>
 
 <b>Signature:</b>
@@ -497,6 +591,7 @@ func main() {
 ```go
 func GetNowDate() string
 ```
+
 <b>Example:</b>
 
 ```go
@@ -511,12 +606,16 @@ import (
 func main() {
     now := time.Now()
     currentDate := datetime.GetNowDate()
-    fmt.Println(currentDate) // 2022-01-28
+
+    fmt.Println(currentDate) 
+    
+    // Output:
+    // 2022-01-28
 }
 ```
 
-
 ### <span id="GetNowTime">GetNowTime</span>
+
 <p>Get current time string, format is hh:mm:ss.</p>
 
 <b>Signature:</b>
@@ -524,6 +623,7 @@ func main() {
 ```go
 func GetNowTime() string
 ```
+
 <b>Example:</b>
 
 ```go
@@ -538,12 +638,16 @@ import (
 func main() {
     now := time.Now()
     currentTime := datetime.GetNowTime()
-    fmt.Println(currentDate) // 15:57:33
+
+    fmt.Println(currentTime) // 15:57:33
+
+    // Output:
+    // 15:57:33
 }
 ```
 
-
 ### <span id="GetNowDateTime">GetNowDateTime</span>
+
 <p>Get current date time string, format is yyyy-mm-dd hh:mm:ss.</p>
 
 <b>Signature:</b>
@@ -551,6 +655,7 @@ func main() {
 ```go
 func GetNowDateTime() string
 ```
+
 <b>Example:</b>
 
 ```go
@@ -565,12 +670,16 @@ import (
 func main() {
     now := time.Now()
     current := datetime.GetNowDateTime()
-    fmt.Println(current) // 2022-01-28 15:59:33
+
+    fmt.Println(current) 
+    
+    // Output:
+    // 2022-01-28 15:59:33
 }
 ```
 
-
 ### <span id="GetZeroHourTimestamp">GetZeroHourTimestamp</span>
+
 <p>Return timestamp of zero hour (timestamp of 00:00).</p>
 
 <b>Signature:</b>
@@ -578,6 +687,7 @@ func main() {
 ```go
 func GetZeroHourTimestamp() int64
 ```
+
 <b>Example:</b>
 
 ```go
@@ -592,12 +702,16 @@ import (
 func main() {
     now := time.Now()
     zeroTime := datetime.GetZeroHourTimestamp()
-    fmt.Println(zeroTime) // 1643299200
+    
+    fmt.Println(zeroTime) 
+    
+    // Output:
+    // 1643299200
 }
 ```
 
-
 ### <span id="GetNightTimestamp">GetNightTimestamp</span>
+
 <p>Return timestamp of zero hour (timestamp of 23:59).</p>
 
 <b>Signature:</b>
@@ -605,6 +719,7 @@ func main() {
 ```go
 func GetNightTimestamp() int64
 ```
+
 <b>Example:</b>
 
 ```go
@@ -619,11 +734,16 @@ import (
 func main() {
     now := time.Now()
     nightTime := datetime.GetNightTimestamp()
-    fmt.Println(nightTime) // 1643385599
+
+    fmt.Println(nightTime) 
+    
+    // Output:
+    // 1643385599
 }
 ```
 
 ### <span id="FormatTimeToStr">FormatTimeToStr</span>
+
 <p>Format time to string, `format` param specification see note 1.</p>
 
 <b>Signature:</b>
@@ -631,6 +751,7 @@ func main() {
 ```go
 func FormatTimeToStr(t time.Time, format string) string
 ```
+
 <b>Example:</b>
 
 ```go
@@ -643,14 +764,25 @@ import (
 )
 
 func main() {
-    now := time.Now()
+    t, _ := time.Parse("2006-01-02 15:04:05", "2021-01-02 16:04:08")
-    timeStr := datetime.FormatTimeToStr(now, "yyyy/mm/dd hh:mm:ss")
+
-    fmt.Println(timeStr) //2022/01/28 16:07:44
+    result1 := datetime.FormatTimeToStr(t, "yyyy-mm-dd hh:mm:ss")
+    result2 := datetime.FormatTimeToStr(t, "yyyy-mm-dd")
+    result3 := datetime.FormatTimeToStr(t, "dd-mm-yy hh:mm:ss")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 2021-01-02 16:04:08
+    // 2021-01-02
+    // 02-01-21 16:04:08
 }
 ```
 
-
 ### <span id="FormatStrToTime">FormatStrToTime</span>
+
 <p>Format string to time, `format` param specification see note 1.</p>
 
 <b>Signature:</b>
@@ -658,6 +790,7 @@ func main() {
 ```go
 func FormatStrToTime(str, format string) (time.Time, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -669,24 +802,34 @@ import (
 )
 
 func main() {
-    time := datetime.FormatStrToTime("2006-01-02 15:04:05", "yyyy/mm/dd hh:mm:ss")
+    result1, _ := datetime.FormatStrToTime("2021-01-02 16:04:08", "yyyy-mm-dd hh:mm:ss")
-    fmt.Println(time)
+    result2, _ := datetime.FormatStrToTime("2021-01-02", "yyyy-mm-dd")
+    result3, _ := datetime.FormatStrToTime("02-01-21 16:04:08", "dd-mm-yy hh:mm:ss")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 2021-01-02 16:04:08 +0000 UTC
+    // 2021-01-02 00:00:00 +0000 UTC
+    // 2021-01-02 16:04:08 +0000 UTC
 }
 ```
 
-
-
 ### <span id="NewUnixNow">NewUnixNow</span>
+
 <p>Return unix timestamp of current time</p>
 
 <b>Signature:</b>
 
 ```go
 type theTime struct {
-	unix int64
+    unix int64
 }
 func NewUnixNow() *theTime
 ```
+
 <b>Example:</b>
 
 ```go
@@ -699,12 +842,15 @@ import (
 
 func main() {
     tm := datetime.NewUnixNow()
-    fmt.Println(tm) //&{1647597438}
+    fmt.Println(tm) 
+    
+    // Output:
+    // &{1647597438}
 }
 ```
 
-
 ### <span id="NewUnix">NewUnix</span>
+
 <p>Return unix timestamp of specified int64 value.</p>
 
 <b>Signature:</b>
@@ -715,6 +861,7 @@ type theTime struct {
 }
 func NewUnix(unix int64) *theTime
 ```
+
 <b>Example:</b>
 
 ```go
@@ -727,13 +874,15 @@ import (
 
 func main() {
     tm := datetime.NewUnix(1647597438)
-    fmt.Println(tm) //&{1647597438}
+    fmt.Println(tm) 
+    
+    // Output:
+    // &{1647597438}
 }
 ```
 
-
-
 ### <span id="NewFormat">NewFormat</span>
+
 <p>Return unix timestamp of specified time string, t should be "yyyy-mm-dd hh:mm:ss".</p>
 
 <b>Signature:</b>
@@ -744,6 +893,7 @@ type theTime struct {
 }
 func NewFormat(t string) (*theTime, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -756,14 +906,15 @@ import (
 
 func main() {
     tm, err := datetime.NewFormat("2022-03-18 17:04:05")
-    fmt.Println(tm) //&{1647594245}
+    fmt.Println(tm) 
+    
+    // Output:
+    // &{1647594245}
 }
 ```
 
-
-
-
 ### <span id="NewISO8601">NewISO8601</span>
+
 <p>Return unix timestamp of specified iso8601 time string.</p>
 
 <b>Signature:</b>
@@ -774,6 +925,7 @@ type theTime struct {
 }
 func NewISO8601(iso8601 string) (*theTime, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -786,13 +938,15 @@ import (
 
 func main() {
     tm, err := datetime.NewISO8601("2006-01-02T15:04:05.999Z")
-    fmt.Println(tm) //&{1136214245}
+    fmt.Println(tm) 
+    
+    // Output:
+    // &{1136214245}
 }
 ```
 
-
-
 ### <span id="ToUnix">ToUnix</span>
+
 <p>Return unix timestamp.</p>
 
 <b>Signature:</b>
@@ -800,6 +954,7 @@ func main() {
 ```go
 func (t *theTime) ToUnix() int64
 ```
+
 <b>Example:</b>
 
 ```go
@@ -812,13 +967,15 @@ import (
 
 func main() {
     tm := datetime.NewUnixNow()
-    fmt.Println(tm.ToUnix()) //1647597438
+    fmt.Println(tm.ToUnix()) 
+    
+    // Output:
+    // 1647597438
 }
 ```
 
-
-
 ### <span id="ToFormat">ToFormat</span>
+
 <p>Return time string 'yyyy-mm-dd hh:mm:ss'.</p>
 
 <b>Signature:</b>
@@ -826,6 +983,7 @@ func main() {
 ```go
 func (t *theTime) ToFormat() string
 ```
+
 <b>Example:</b>
 
 ```go
@@ -838,13 +996,15 @@ import (
 
 func main() {
     tm, _ := datetime.NewFormat("2022-03-18 17:04:05")
-    fmt.Println(tm.ToFormat()) //"2022-03-18 17:04:05"
+    fmt.Println(tm.ToFormat()) 
+    
+    // Output:
+    // 2022-03-18 17:04:05
 }
 ```
 
-
-
 ### <span id="ToFormatForTpl">ToFormatForTpl</span>
+
 <p>Return the time string which format is specified tpl.</p>
 
 <b>Signature:</b>
@@ -852,6 +1012,7 @@ func main() {
 ```go
 func (t *theTime) ToFormatForTpl(tpl string) string
 ```
+
 <b>Example:</b>
 
 ```go
@@ -865,12 +1026,15 @@ import (
 func main() {
     tm, _ := datetime.NewFormat("2022-03-18 17:04:05")
     ts := tm.ToFormatForTpl("2006/01/02 15:04:05")
-    fmt.Println(ts) //"2022/03/18 17:04:05"
+    fmt.Println(ts) 
+    
+    // Output:
+    // 2022/03/18 17:04:05
 }
 ```
 
-
 ### <span id="ToIso8601">ToIso8601</span>
+
 <p>Return iso8601 time string.</p>
 
 <b>Signature:</b>
@@ -878,6 +1042,7 @@ func main() {
 ```go
 func (t *theTime) ToIso8601() string
 ```
+
 <b>Example:</b>
 
 ```go
@@ -891,6 +1056,9 @@ import (
 func main() {
     tm, _ := datetime.NewISO8601("2006-01-02T15:04:05.999Z")
     ts := tm.ToIso8601()
-    fmt.Println(ts) //"2006-01-02T23:04:05+08:00"
+    fmt.Println(ts) 
+    
+    // Output:
+    // 2006-01-02T23:04:05+08:00
 }
-```
+```

docs/fileutil.md

@@ -1,15 +1,17 @@
 # Fileutil
+
 Package fileutil implements some basic functions for file operations.
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Source:
 
-- [https://github.com/duke-git/lancet/blob/main/fileutil/file.go](https://github.com/duke-git/lancet/blob/main/fileutil/file.go)
+-   [https://github.com/duke-git/lancet/blob/main/fileutil/file.go](https://github.com/duke-git/lancet/blob/main/fileutil/file.go)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Usage:
+
 ```go
 import (
     "github.com/duke-git/lancet/v2/fileutil"
@@ -19,30 +21,30 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## Index
-- [ClearFile](#ClearFile)
+
-- [CreateFile](#CreateFile)
+-   [ClearFile](#ClearFile)
-- [CreateDir](#CreateDir)
+-   [CreateFile](#CreateFile)
-- [CopyFile](#CopyFile)
+-   [CreateDir](#CreateDir)
-- [FileMode](#FileMode)
+-   [CopyFile](#CopyFile)
-- [MiMeType](#MiMeType)
+-   [FileMode](#FileMode)
-- [IsExist](#IsExist)
+-   [MiMeType](#MiMeType)
-- [IsLink](#IsLink)
+-   [IsExist](#IsExist)
-- [IsDir](#IsDir)
+-   [IsLink](#IsLink)
-- [ListFileNames](#ListFileNames)
+-   [IsDir](#IsDir)
-- [RemoveFile](#RemoveFile)
+-   [ListFileNames](#ListFileNames)
-- [ReadFileToString](#ReadFileToString)
+-   [RemoveFile](#RemoveFile)
-- [ReadFileByLine](#ReadFileByLine)
+-   [ReadFileToString](#ReadFileToString)
-- [Zip](#Zip)
+-   [ReadFileByLine](#ReadFileByLine)
-- [UnZip](#UnZip)
+-   [Zip](#Zip)
-- [UnZip](#UnZip)
+-   [UnZip](#UnZip)
+-   [UnZip](#UnZip)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Documentation
 
-
-
 ### <span id="ClearFile">ClearFile</span>
+
 <p>Clear the file content, write empty string to the file.</p>
 
 <b>Signature:</b>
@@ -50,6 +52,7 @@ import (
 ```go
 func ClearFile(path string) error
 ```
+
 <b>Example:</b>
 
 ```go
@@ -69,6 +72,7 @@ func main() {
 ```
 
 ### <span id="CreateFile">CreateFile</span>
+
 <p>Create file in path. return true if create succeed.</p>
 
 <b>Signature:</b>
@@ -76,6 +80,7 @@ func main() {
 ```go
 func CreateFile(path string) bool
 ```
+
 <b>Example:</b>
 
 ```go
@@ -92,9 +97,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="CreateDir">CreateDir</span>
+
 <p>Create directory in absolute path. param `absPath` like /a/, /a/b/.</p>
 
 <b>Signature:</b>
@@ -102,6 +106,7 @@ func main() {
 ```go
 func CreateDir(absPath string) error
 ```
+
 <b>Example:</b>
 
 ```go
@@ -118,8 +123,8 @@ func main() {
 }
 ```
 
-
 ### <span id="CopyFile">CopyFile</span>
+
 <p>Copy src file to dest file. If dest file exist will overwrite it.</p>
 
 <b>Signature:</b>
@@ -127,6 +132,7 @@ func main() {
 ```go
 func CopyFile(srcFilePath string, dstFilePath string) error
 ```
+
 <b>Example:</b>
 
 ```go
@@ -145,9 +151,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="FileMode">FileMode</span>
+
 <p>Return file mode infomation.</p>
 
 <b>Signature:</b>
@@ -155,6 +160,7 @@ func main() {
 ```go
 func FileMode(path string) (fs.FileMode, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -174,9 +180,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="MiMeType">MiMeType</span>
+
 <p>Get file mime type, 'file' param's type should be string or *os.File.</p>
 
 <b>Signature:</b>
@@ -184,6 +189,7 @@ func main() {
 ```go
 func MiMeType(file any) string
 ```
+
 <b>Example:</b>
 
 ```go
@@ -205,10 +211,8 @@ func main() {
 }
 ```
 
-
-
-
 ### <span id="IsExist">IsExist</span>
+
 <p>Checks if a file or directory exists.</p>
 
 <b>Signature:</b>
@@ -216,6 +220,7 @@ func main() {
 ```go
 func IsExist(path string) bool
 ```
+
 <b>Example:</b>
 
 ```go
@@ -233,9 +238,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="IsLink">IsLink</span>
+
 <p>Checks if a file is symbol link or not.</p>
 
 <b>Signature:</b>
@@ -243,6 +247,7 @@ func main() {
 ```go
 func IsLink(path string) bool
 ```
+
 <b>Example:</b>
 
 ```go
@@ -259,16 +264,16 @@ func main() {
 }
 ```
 
-
-
 ### <span id="IsDir">IsDir</span>
+
 <p>Checks if the path is directy or not.</p>
 
 <b>Signature:</b>
 
 ```go
-func IsDir(path string) bool 
+func IsDir(path string) bool
 ```
+
 <b>Example:</b>
 
 ```go
@@ -288,9 +293,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ListFileNames">ListFileNames</span>
+
 <p>List all file names in given path.</p>
 
 <b>Signature:</b>
@@ -298,6 +302,7 @@ func main() {
 ```go
 func ListFileNames(path string) ([]string, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -314,9 +319,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="RemoveFile">RemoveFile</span>
+
 <p>Remove the file of path.</p>
 
 <b>Signature:</b>
@@ -324,6 +328,7 @@ func main() {
 ```go
 func RemoveFile(path string) error
 ```
+
 <b>Example:</b>
 
 ```go
@@ -342,8 +347,8 @@ func main() {
 }
 ```
 
-
 ### <span id="ReadFileToString">ReadFileToString</span>
+
 <p>Return string of file content.</p>
 
 <b>Signature:</b>
@@ -351,6 +356,7 @@ func main() {
 ```go
 func ReadFileToString(path string) (string, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -374,9 +380,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ReadFileByLine">ReadFileByLine</span>
+
 <p>Read file line by line, and return slice of lines</p>
 
 <b>Signature:</b>
@@ -384,6 +389,7 @@ func main() {
 ```go
 func ReadFileByLine(path string)([]string, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -408,9 +414,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="Zip">Zip</span>
+
 <p>Create a zip file of fpath, fpath could be a file or a directory.</p>
 
 <b>Signature:</b>
@@ -418,6 +423,7 @@ func main() {
 ```go
 func Zip(fpath string, destPath string) error
 ```
+
 <b>Example:</b>
 
 ```go
@@ -436,10 +442,8 @@ func main() {
 }
 ```
 
-
-
-
 ### <span id="UnZip">UnZip</span>
+
 <p>Unzip the file and save it to dest path.</p>
 
 <b>Signature:</b>
@@ -447,6 +451,7 @@ func main() {
 ```go
 func UnZip(zipFile string, destPath string) error
 ```
+
 <b>Example:</b>
 
 ```go
@@ -464,8 +469,3 @@ func main() {
     }
 }
 ```
-
-
-
-
-

docs/fileutil_zh-CN.md

@@ -1,15 +1,17 @@
 # Fileutil
-fileutil包支持文件基本操作。
+
+fileutil 包支持文件基本操作。
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 源码:
 
-- [https://github.com/duke-git/lancet/blob/main/fileutil/file.go](https://github.com/duke-git/lancet/blob/main/fileutil/file.go)
+-   [https://github.com/duke-git/lancet/blob/main/fileutil/file.go](https://github.com/duke-git/lancet/blob/main/fileutil/file.go)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 用法:
+
 ```go
 import (
     "github.com/duke-git/lancet/v2/fileutil"
@@ -19,29 +21,29 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## 目录
-- [ClearFile](#ClearFile)
+
-- [CreateFile](#CreateFile)
+-   [ClearFile](#ClearFile)
-- [CreateDir](#CreateDir)
+-   [CreateFile](#CreateFile)
-- [CopyFile](#CopyFile)
+-   [CreateDir](#CreateDir)
-- [FileMode](#FileMode)
+-   [CopyFile](#CopyFile)
-- [MiMeType](#MiMeType)
+-   [FileMode](#FileMode)
-- [IsExist](#IsExist)
+-   [MiMeType](#MiMeType)
-- [IsLink](#IsLink)
+-   [IsExist](#IsExist)
-- [IsDir](#IsDir)
+-   [IsLink](#IsLink)
-- [ListFileNames](#ListFileNames)
+-   [IsDir](#IsDir)
-- [RemoveFile](#RemoveFile)
+-   [ListFileNames](#ListFileNames)
-- [ReadFileToString](#ReadFileToString)
+-   [RemoveFile](#RemoveFile)
-- [ReadFileByLine](#ReadFileByLine)
+-   [ReadFileToString](#ReadFileToString)
-- [Zip](#Zip)
+-   [ReadFileByLine](#ReadFileByLine)
-- [UnZip](#UnZip)
+-   [Zip](#Zip)
+-   [UnZip](#UnZip)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 文档
 
-
-
 ### <span id="ClearFile">ClearFile</span>
+
 <p>清空文件内容</p>
 
 <b>函数签名:</b>
@@ -49,6 +51,7 @@ import (
 ```go
 func ClearFile(path string) error
 ```
+
 <b>例子:</b>
 
 ```go
@@ -68,6 +71,7 @@ func main() {
 ```
 
 ### <span id="CreateFile">CreateFile</span>
+
 <p>创建文件，创建成功返回true, 否则返回false</p>
 
 <b>函数签名:</b>
@@ -75,6 +79,7 @@ func main() {
 ```go
 func CreateFile(path string) bool
 ```
+
 <b>例子:</b>
 
 ```go
@@ -91,8 +96,8 @@ func main() {
 }
 ```
 
-
 ### <span id="CreateDir">CreateDir</span>
+
 <p>使用绝对路径创建嵌套目录，例如/a/, /a/b/</p>
 
 <b>函数签名:</b>
@@ -100,6 +105,7 @@ func main() {
 ```go
 func CreateDir(absPath string) error
 ```
+
 <b>Example:</b>
 
 ```go
@@ -116,9 +122,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="CopyFile">CopyFile</span>
+
 <p>拷贝文件，会覆盖原有的文件</p>
 
 <b>函数签名:</b>
@@ -126,6 +131,7 @@ func main() {
 ```go
 func CopyFile(srcFilePath string, dstFilePath string) error
 ```
+
 <b>例子:</b>
 
 ```go
@@ -144,9 +150,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="FileMode">FileMode</span>
+
 <p>获取文件mode信息</p>
 
 <b>函数签名:</b>
@@ -154,6 +159,7 @@ func main() {
 ```go
 func FileMode(path string) (fs.FileMode, error)
 ```
+
 <b>例子:</b>
 
 ```go
@@ -173,9 +179,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="MiMeType">MiMeType</span>
+
 <p>获取文件mime类型, 'file'参数的类型必须是string或者*os.File</p>
 
 <b>函数签名:</b>
@@ -183,6 +188,7 @@ func main() {
 ```go
 func MiMeType(file any) string
 ```
+
 <b>例子:</b>
 
 ```go
@@ -204,10 +210,8 @@ func main() {
 }
 ```
 
-
-
-
 ### <span id="IsExist">IsExist</span>
+
 <p>判断文件或目录是否存在</p>
 
 <b>函数签名:</b>
@@ -215,6 +219,7 @@ func main() {
 ```go
 func IsExist(path string) bool
 ```
+
 <b>例子:</b>
 
 ```go
@@ -232,9 +237,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="IsLink">IsLink</span>
+
 <p>判断文件是否是符号链接</p>
 
 <b>函数签名:</b>
@@ -242,6 +246,7 @@ func main() {
 ```go
 func IsLink(path string) bool
 ```
+
 <b>例子:</b>
 
 ```go
@@ -258,16 +263,16 @@ func main() {
 }
 ```
 
-
-
 ### <span id="IsDir">IsDir</span>
+
 <p>判断参数是否是目录</p>
 
 <b>函数签名:</b>
 
 ```go
-func IsDir(path string) bool 
+func IsDir(path string) bool
 ```
+
 <b>例子:</b>
 
 ```go
@@ -287,9 +292,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ListFileNames">ListFileNames</span>
+
 <p>返回目录下所有文件名</p>
 
 <b>函数签名:</b>
@@ -297,6 +301,7 @@ func main() {
 ```go
 func ListFileNames(path string) ([]string, error)
 ```
+
 <b>例子:</b>
 
 ```go
@@ -313,9 +318,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="RemoveFile">RemoveFile</span>
+
 <p>删除文件</p>
 
 <b>函数签名:</b>
@@ -323,6 +327,7 @@ func main() {
 ```go
 func RemoveFile(path string) error
 ```
+
 <b>例子:</b>
 
 ```go
@@ -341,8 +346,8 @@ func main() {
 }
 ```
 
-
 ### <span id="ReadFileToString">ReadFileToString</span>
+
 <p>读取文件内容并返回字符串</p>
 
 <b>函数签名:</b>
@@ -350,6 +355,7 @@ func main() {
 ```go
 func ReadFileToString(path string) (string, error)
 ```
+
 <b>例子:</b>
 
 ```go
@@ -373,9 +379,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ReadFileByLine">ReadFileByLine</span>
+
 <p>按行读取文件内容，返回字符串切片包含每一行</p>
 
 <b>函数签名:</b>
@@ -383,6 +388,7 @@ func main() {
 ```go
 func ReadFileByLine(path string)([]string, error)
 ```
+
 <b>例子:</b>
 
 ```go
@@ -407,9 +413,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="Zip">Zip</span>
+
 <p>zip压缩文件, fpath参数可以是文件或目录</p>
 
 <b>函数签名:</b>
@@ -417,6 +422,7 @@ func main() {
 ```go
 func Zip(fpath string, destPath string) error
 ```
+
 <b>例子:</b>
 
 ```go
@@ -435,10 +441,8 @@ func main() {
 }
 ```
 
-
-
-
 ### <span id="UnZip">UnZip</span>
+
 <p>zip解压缩文件并保存在目录中</p>
 
 <b>Signature:</b>
@@ -446,6 +450,7 @@ func main() {
 ```go
 func UnZip(zipFile string, destPath string) error
 ```
+
 <b>例子:</b>
 
 ```go
@@ -463,8 +468,3 @@ func main() {
     }
 }
 ```
-
-
-
-
-

docs/formatter.md

@@ -1,15 +1,17 @@
 # Formatter
+
 formatter contains some functions for data formatting.
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Source:
 
-- [https://github.com/duke-git/lancet/blob/main/formatter/formatter.go](https://github.com/duke-git/lancet/blob/main/formatter/formatter.go)
+-   [https://github.com/duke-git/lancet/blob/main/formatter/formatter.go](https://github.com/duke-git/lancet/blob/main/formatter/formatter.go)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Usage:
+
 ```go
 import (
     "github.com/duke-git/lancet/v2/formatter"
@@ -19,15 +21,15 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## Index
-- [Comma](#Comma)
+
+-   [Comma](#Comma)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Documentation
 
-
-
 ### <span id="Comma">Comma</span>
+
 <p>Add comma to a number value by every 3 numbers from right to left. ahead by symbol char. if value is a invalid number string like "aa", return empty string.</p>
 
 <b>Signature:</b>
@@ -35,6 +37,7 @@ import (
 ```go
 func Comma[T constraints.Float | constraints.Integer | string](value T, symbol string) string
 ```
+
 <b>Example:</b>
 
 ```go
@@ -46,7 +49,17 @@ import (
 )
 
 func main() {
-    fmt.Println(formatter.Comma("12345", ""))   // "12,345"
+    result1 := formatter.Comma("123", "")
-    fmt.Println(formatter.Comma(12345.67, "¥")) // "¥12,345.67"
+    result2 := formatter.Comma("12345", "$")
+    result3 := formatter.Comma(1234567, "￥")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 123
+    // $12,345
+    // ￥1,234,567
 }
 ```

docs/formatter_zh-CN.md

@@ -1,15 +1,17 @@
 # Formatter
-formatter格式化器包含一些数据格式化处理方法。
+
+formatter 格式化器包含一些数据格式化处理方法。
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 源码:
 
-- [https://github.com/duke-git/lancet/blob/main/formatter/formatter.go](https://github.com/duke-git/lancet/blob/main/formatter/formatter.go)
+-   [https://github.com/duke-git/lancet/blob/main/formatter/formatter.go](https://github.com/duke-git/lancet/blob/main/formatter/formatter.go)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 用法:
+
 ```go
 import (
     "github.com/duke-git/lancet/v2/formatter"
@@ -19,15 +21,15 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## 目录
-- [Comma](#Comma)
+
+-   [Comma](#Comma)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 文档
 
-
-
 ### <span id="Comma">Comma</span>
+
 <p>用逗号每隔3位分割数字/字符串，支持前缀添加符号。参数value必须是数字或者可以转为数字的字符串, 否则返回空字符串</p>
 
 <b>函数签名:</b>
@@ -35,6 +37,7 @@ import (
 ```go
 func Comma[T constraints.Float | constraints.Integer | string](value T, symbol string) string
 ```
+
 <b>例子:</b>
 
 ```go
@@ -46,7 +49,17 @@ import (
 )
 
 func main() {
-    fmt.Println(formatter.Comma("12345", ""))   // "12,345"
+    result1 := formatter.Comma("123", "")
-    fmt.Println(formatter.Comma(12345.67, "¥")) // "¥12,345.67"
+    result2 := formatter.Comma("12345", "$")
+    result3 := formatter.Comma(1234567, "￥")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 123
+    // $12,345
+    // ￥1,234,567
 }
 ```

docs/function.md

@@ -1,16 +1,18 @@
 # Function
+
 Package function can control the flow of function execution and support part of functional programming.
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Source:
 
-- [https://github.com/duke-git/lancet/blob/main/function/function.go](https://github.com/duke-git/lancet/blob/main/function/function.go)
+-   [https://github.com/duke-git/lancet/blob/main/function/function.go](https://github.com/duke-git/lancet/blob/main/function/function.go)
-- [https://github.com/duke-git/lancet/blob/main/function/watcher.go](https://github.com/duke-git/lancet/blob/main/function/watcher.go)
+-   [https://github.com/duke-git/lancet/blob/main/function/watcher.go](https://github.com/duke-git/lancet/blob/main/function/watcher.go)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Usage:
+
 ```go
 import (
     "github.com/duke-git/lancet/v2/function"
@@ -20,22 +22,22 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## Index
-- [After](#After)
+
-- [Before](#Before)
+-   [After](#After)
-- [CurryFn](#CurryFn)
+-   [Before](#Before)
-- [Compose](#Compose)
+-   [CurryFn](#CurryFn)
-- [Debounced](#Debounced)
+-   [Compose](#Compose)
-- [Delay](#Delay)
+-   [Debounced](#Debounced)
-- [Pipeline](#Pipeline)
+-   [Delay](#Delay)
-- [Watcher](#Watcher)
+-   [Pipeline](#Pipeline)
+-   [Watcher](#Watcher)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Documentation
 
-
-
 ### <span id="After">After</span>
+
 <p>Creates a function that invokes given func once it's called n or more times.</p>
 
 <b>Signature:</b>
@@ -43,6 +45,7 @@ import (
 ```go
 func After(n int, fn any) func(args ...any) []reflect.Value
 ```
+
 <b>Example:</b>
 
 ```go
@@ -54,33 +57,18 @@ import (
 )
 
 func main() {
-	arr := []string{"a", "b"}
+    fn := function.After(2, func() {
-	f := function.After(len(arr), func(i int) int {
+        fmt.Println("hello")
-		fmt.Println("last print")
+    })
-		return i
-	})
 
-	type cb func(args ...any) []reflect.Value
+    fn()
-	print := func(i int, s string, fn cb) {
+    fn()
-		fmt.Printf("arr[%d] is %s \n", i, s)
-		fn(i)
-	}
 
-	fmt.Println("arr is", arr)
+    // Output:
-	for i := 0; i < len(arr); i++ {
+    // hello
-		print(i, arr[i], f)
-	}
-
-    //output:
-    // arr is [a b]
-    // arr[0] is a 
-    // arr[1] is b 
-    // last print
 }
 ```
 
-
-
 ### <span id="Before">Before</span>
 
 <p>creates a function that invokes func once it's called less than n times.</p>
@@ -90,6 +78,7 @@ func main() {
 ```go
 func Before(n int, fn any) func(args ...any) []reflect.Value
 ```
+
 <b>Example:</b>
 
 ```go
@@ -102,29 +91,21 @@ import (
 )
 
 func main() {
-	arr := []string{"a", "b", "c", "d", "e"}
+    fn := function.Before(2, func() {
-	f := function.Before(3, func(i int) int {
+        fmt.Println("hello")
-		return i
+    })
-	})
 
-	var res []int64
+    fn()
-	type cb func(args ...any) []reflect.Value
+    fn()
-	appendStr := func(i int, s string, fn cb) {
+    fn()
-		v := fn(i)
+    fn()
-		res = append(res, v[0].Int())
-	}
 
-	for i := 0; i < len(arr); i++ {
+    // Output:
-		appendStr(i, arr[i], f)
+    // hello
-	}
+    // hello
-
-	expected := []int64{0, 1, 2, 2, 2}
-	fmt.Println(res) // 0, 1, 2, 2, 2
 }
 ```
 
-
-
 ### <span id="CurryFn">CurryFn</span>
 
 <p>Make curry function.</p>
@@ -135,6 +116,7 @@ func main() {
 type CurryFn[T any] func(...T) T
 func (cf CurryFn[T]) New(val T) func(...T) T
 ```
+
 <b>Example:</b>
 
 ```go
@@ -147,22 +129,23 @@ import (
 
 func main() {
     add := func(a, b int) int {
-		return a + b
+        return a + b
-	}
+    }
 
-	var addCurry CurryFn[int] = func(values ...int) int {
+    var addCurry function.CurryFn[int] = func(values ...int) int {
-		return add(values[0], values[1])
+        return add(values[0], values[1])
-	}
+    }
-	add1 := addCurry.New(1)
+    add1 := addCurry.New(1)
 
-	result := add1(2)
+    result := add1(2)
 
-	fmt.Println(result) //3
+    fmt.Println(result)
+
+    // Output:
+    // 3
 }
 ```
 
-
-
 ### <span id="Compose">Compose</span>
 
 <p>Compose the function list from right to left, then return the composed function.</p>
@@ -172,6 +155,7 @@ func main() {
 ```go
 func Compose[T any](fnList ...func(...T) T) func(...T) T
 ```
+
 <b>Example:</b>
 
 ```go
@@ -183,22 +167,23 @@ import (
 )
 
 func main() {
-   	toUpper := func(strs ...string) string {
+    toUpper := func(strs ...string) string {
-		return strings.ToUpper(strs[0])
+        return strings.ToUpper(strs[0])
-	}
+    }
-	toLower := func(strs ...string) string {
+    toLower := func(strs ...string) string {
-		return strings.ToLower(strs[0])
+        return strings.ToLower(strs[0])
-	}
+    }
-	transform := Compose(toUpper, toLower)
+    transform := function.Compose(toUpper, toLower)
 
-	result := transform("aBCde")
+    result := transform("aBCde")
 
-	fmt.Println(result) //ABCDE
+    fmt.Println(result)
+
+    // Output:
+    // ABCDE
 }
 ```
 
-
-
 ### <span id="Debounced">Debounced</span>
 
 <p>Creates a debounced function that delays invoking fn until after wait duration have elapsed since the last time the debounced function was invoked.</p>
@@ -208,6 +193,7 @@ func main() {
 ```go
 func Debounced(fn func(), duration time.Duration) func()
 ```
+
 <b>Example:</b>
 
 ```go
@@ -220,27 +206,34 @@ import (
 
 func main() {
     count := 0
-	add := func() {
-		count++
-	}
 
-	debouncedAdd := function.Debounced(add, 50*time.Microsecond)
+    add := func() {
-	function.debouncedAdd()
+        count++
-	function.debouncedAdd()
+    }
-	function.debouncedAdd()
-	function.debouncedAdd()
 
-	time.Sleep(100 * time.Millisecond)
+    debouncedAdd := function.Debounced(add, 50*time.Microsecond)
-	fmt.Println(count) //1
 
-	function.debouncedAdd()
+    debouncedAdd()
-	time.Sleep(100 * time.Millisecond)
+    debouncedAdd()
-	fmt.Println(count) //2
+    debouncedAdd()
+    debouncedAdd()
+
+    time.Sleep(100 * time.Millisecond)
+
+    fmt.Println(count)
+
+    debouncedAdd()
+
+    time.Sleep(100 * time.Millisecond)
+
+    fmt.Println(count)
+
+    // Output:
+    // 1
+    // 2
 }
 ```
 
-
-
 ### <span id="Delay">Delay</span>
 
 <p>Invoke function after delayed time.</p>
@@ -250,6 +243,7 @@ func main() {
 ```go
 func Delay(delay time.Duration, fn any, args ...any)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -261,15 +255,17 @@ import (
 )
 
 func main() {
-	var print = func(s string) {
+    var print = func(s string) {
-		fmt.Println(count) //delay 2 seconds
+        fmt.Println(s)
-	}
+    }
-	function.Delay(2*time.Second, print, "delay 2 seconds")
+
+    function.Delay(2*time.Second, print, "hello")
+
+    // Output:
+    // hello
 }
 ```
 
-
-
 ### <span id="Schedule">Schedule</span>
 
 <p>Invoke function every duration time, until close the returned bool chan.</p>
@@ -279,6 +275,7 @@ func main() {
 ```go
 func Schedule(d time.Duration, fn any, args ...any) chan bool
 ```
+
 <b>Example:</b>
 
 ```go
@@ -290,20 +287,24 @@ import (
 )
 
 func main() {
-    var res []string
+    count := 0
-	appendStr := func(s string) {
-		res = append(res, s)
-	}
 
-	stop := function.Schedule(1*time.Second, appendStr, "*")
+    increase := func() {
-	time.Sleep(5 * time.Second)
+        count++
-	close(stop)
+    }
 
-	fmt.Println(res) //[* * * * *]
+    stop := function.Schedule(2*time.Second, increase)
+
+    time.Sleep(2 * time.Second)
+    close(stop)
+
+    fmt.Println(count)
+
+    // Output:
+    // 2
 }
 ```
 
-
 ### <span id="Pipeline">Pipeline</span>
 
 <p>Pipeline takes a list of functions and returns a function whose param will be passed into
@@ -314,6 +315,7 @@ the functions one by one.</p>
 ```go
 func Pipeline[T any](funcs ...func(T) T) func(T) T
 ```
+
 <b>Example:</b>
 
 ```go
@@ -326,22 +328,26 @@ import (
 
 func main() {
     addOne := func(x int) int {
-		return x + 1
+        return x + 1
-	}
+    }
-	double := func(x int) int {
+    double := func(x int) int {
-		return 2 * x
+        return 2 * x
-	}
+    }
-	square := func(x int) int {
+    square := func(x int) int {
-		return x * x
+        return x * x
-	}
+    }
 
-	fn := Pipeline(addOne, double, square)
+    fn := function.Pipeline(addOne, double, square)
 
-	fmt.Println(fn(2)) //36
+    result := fn(2)
+
+    fmt.Println(result)
+
+    // Output:
+    // 36
 }
 ```
 
-
 ### <span id="Watcher">Watcher</span>
 
 <p>Watcher is used for record code excution time. can start/stop/reset the watch timer. get the elapsed time of function execution.</p>
@@ -350,9 +356,9 @@ func main() {
 
 ```go
 type Watcher struct {
-	startTime int64
+    startTime int64
-	stopTime  int64
+    stopTime  int64
-	excuting  bool
+    excuting  bool
 }
 func NewWatcher() *Watcher
 func (w *Watcher) Start() //start the watcher
@@ -360,6 +366,7 @@ func (w *Watcher) Stop() //stop the watcher
 func (w *Watcher) Reset() //reset the watcher
 func (w *Watcher) GetElapsedTime() time.Duration //get the elapsed time of function execution
 ```
+
 <b>Example:</b>
 
 ```go
@@ -371,31 +378,28 @@ import (
 )
 
 func main() {
-   	w := function.NewWatcher()
+       w := function.NewWatcher()
 
-	w.Start()
+    w.Start()
 
-	longRunningTask()
+    longRunningTask()
 
-	fmt.Println(w.excuting) //true
+    fmt.Println(w.excuting) //true
 
-	w.Stop()
+    w.Stop()
 
-	eapsedTime := w.GetElapsedTime().Milliseconds()
+    eapsedTime := w.GetElapsedTime().Milliseconds()
-	
-	fmt.Println(eapsedTime)
 
-	w.Reset()
+    fmt.Println(eapsedTime)
+
+    w.Reset()
 }
 
 func longRunningTask() {
-	var slice []int64
+    var slice []int64
-	for i := 0; i < 10000000; i++ {
+    for i := 0; i < 10000000; i++ {
-		slice = append(slice, int64(i))
+        slice = append(slice, int64(i))
-	}
+    }
 }
 
 ```
-
-
-

docs/function_zh-CN.md

@@ -1,16 +1,18 @@
 # Function
-function函数包控制函数执行流程，包含部分函数式编程。
+
+function 函数包控制函数执行流程，包含部分函数式编程。
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 源码:
 
-- [https://github.com/duke-git/lancet/blob/main/function/function.go](https://github.com/duke-git/lancet/blob/main/function/function.go)
+-   [https://github.com/duke-git/lancet/blob/main/function/function.go](https://github.com/duke-git/lancet/blob/main/function/function.go)
-- [https://github.com/duke-git/lancet/blob/main/function/watcher.go](https://github.com/duke-git/lancet/blob/main/function/watcher.go)
+-   [https://github.com/duke-git/lancet/blob/main/function/watcher.go](https://github.com/duke-git/lancet/blob/main/function/watcher.go)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 用法:
+
 ```go
 import (
     "github.com/duke-git/lancet/v2/function"
@@ -20,22 +22,22 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## 目录
-- [After](#After)
+
-- [Before](#Before)
+-   [After](#After)
-- [CurryFn](#CurryFn)
+-   [Before](#Before)
-- [Compose](#Compose)
+-   [CurryFn](#CurryFn)
-- [Debounced](#Debounced)
+-   [Compose](#Compose)
-- [Delay](#Delay)
+-   [Debounced](#Debounced)
-- [Pipeline](#Pipeline)
+-   [Delay](#Delay)
-- [Watcher](#Watcher)
+-   [Pipeline](#Pipeline)
+-   [Watcher](#Watcher)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 文档
 
-
-
 ### <span id="After">After</span>
+
 <p>创建一个函数，当他被调用n或更多次之后将马上触发fn</p>
 
 <b>函数签名:</b>
@@ -43,6 +45,7 @@ import (
 ```go
 func After(n int, fn any) func(args ...any) []reflect.Value
 ```
+
 <b>例子:</b>
 
 ```go
@@ -54,33 +57,18 @@ import (
 )
 
 func main() {
-	arr := []string{"a", "b"}
+    fn := function.After(2, func() {
-	f := function.After(len(arr), func(i int) int {
+        fmt.Println("hello")
-		fmt.Println("last print")
+    })
-		return i
-	})
 
-	type cb func(args ...any) []reflect.Value
+    fn()
-	print := func(i int, s string, fn cb) {
+    fn()
-		fmt.Printf("arr[%d] is %s \n", i, s)
-		fn(i)
-	}
 
-	fmt.Println("arr is", arr)
+    // Output:
-	for i := 0; i < len(arr); i++ {
+    // hello
-		print(i, arr[i], f)
-	}
-
-    //output:
-    // arr is [a b]
-    // arr[0] is a 
-    // arr[1] is b 
-    // last print
 }
 ```
 
-
-
 ### <span id="Before">Before</span>
 
 <p>创建一个函数，调用次数不超过n次，之后再调用这个函数，将返回一次最后调用fn的结果</p>
@@ -90,6 +78,7 @@ func main() {
 ```go
 func Before(n int, fn any) func(args ...any) []reflect.Value
 ```
+
 <b>例子:</b>
 
 ```go
@@ -102,28 +91,21 @@ import (
 )
 
 func main() {
-	arr := []string{"a", "b", "c", "d", "e"}
+    fn := function.Before(2, func() {
-	f := function.Before(3, func(i int) int {
+        fmt.Println("hello")
-		return i
+    })
-	})
 
-	var res []int64
+    fn()
-	type cb func(args ...any) []reflect.Value
+    fn()
-	appendStr := func(i int, s string, fn cb) {
+    fn()
-		v := fn(i)
+    fn()
-		res = append(res, v[0].Int())
-	}
 
-	for i := 0; i < len(arr); i++ {
+    // Output:
-		appendStr(i, arr[i], f)
+    // hello
-	}
+    // hello
-
-	fmt.Println(res) // 0, 1, 2, 2, 2
 }
 ```
 
-
-
 ### <span id="CurryFn">CurryFn</span>
 
 <p>创建柯里化函数</p>
@@ -134,6 +116,7 @@ func main() {
 type CurryFn[T any] func(...T) T
 func (cf CurryFn[T]) New(val T) func(...T) T
 ```
+
 <b>例子:</b>
 
 ```go
@@ -145,23 +128,24 @@ import (
 )
 
 func main() {
-	add := func(a, b int) int {
+    add := func(a, b int) int {
-		return a + b
+        return a + b
-	}
+    }
 
-	var addCurry CurryFn[int] = func(values ...int) int {
+    var addCurry function.CurryFn[int] = func(values ...int) int {
-		return add(values[0], values[1])
+        return add(values[0], values[1])
-	}
+    }
-	add1 := addCurry.New(1)
+    add1 := addCurry.New(1)
 
-	result := add1(2)
+    result := add1(2)
 
-	fmt.Println(result) //3
+    fmt.Println(result)
+
+    // Output:
+    // 3
 }
 ```
 
-
-
 ### <span id="Compose">Compose</span>
 
 <p>从右至左组合函数列表fnList，返回组合后的函数</p>
@@ -171,6 +155,7 @@ func main() {
 ```go
 func Compose[T any](fnList ...func(...T) T) func(...T) T
 ```
+
 <b>例子:</b>
 
 ```go
@@ -182,22 +167,23 @@ import (
 )
 
 func main() {
-	toUpper := func(strs ...string) string {
+    toUpper := func(strs ...string) string {
-		return strings.ToUpper(strs[0])
+        return strings.ToUpper(strs[0])
-	}
+    }
-	toLower := func(strs ...string) string {
+    toLower := func(strs ...string) string {
-		return strings.ToLower(strs[0])
+        return strings.ToLower(strs[0])
-	}
+    }
-	transform := Compose(toUpper, toLower)
+    transform := function.Compose(toUpper, toLower)
 
-	result := transform("aBCde")
+    result := transform("aBCde")
 
-	fmt.Println(result) //ABCDE
+    fmt.Println(result)
+
+    // Output:
+    // ABCDE
 }
 ```
 
-
-
 ### <span id="Debounced">Debounced</span>
 
 <p>创建一个debounced函数，该函数延迟调用fn直到自上次调用debounced函数后等待持续时间过去。</p>
@@ -207,6 +193,7 @@ func main() {
 ```go
 func Debounced(fn func(), duration time.Duration) func()
 ```
+
 <b>例子:</b>
 
 ```go
@@ -218,28 +205,35 @@ import (
 )
 
 func main() {
-	count := 0
+    count := 0
-	add := func() {
+    
-		count++
+    add := func() {
-	}
+        count++
+    }
 
-	debouncedAdd := function.Debounced(add, 50*time.Microsecond)
+    debouncedAdd := function.Debounced(add, 50*time.Microsecond)
-	function.debouncedAdd()
-	function.debouncedAdd()
-	function.debouncedAdd()
-	function.debouncedAdd()
 
-	time.Sleep(100 * time.Millisecond)
+    debouncedAdd()
-	fmt.Println(count) //1
+    debouncedAdd()
+    debouncedAdd()
+    debouncedAdd()
 
-	function.debouncedAdd()
+    time.Sleep(100 * time.Millisecond)
-	time.Sleep(100 * time.Millisecond)
+
-	fmt.Println(count) //2
+    fmt.Println(count)
+
+    debouncedAdd()
+
+    time.Sleep(100 * time.Millisecond)
+
+    fmt.Println(count)
+
+    // Output:
+    // 1
+    // 2
 }
 ```
 
-
-
 ### <span id="Delay">Delay</span>
 
 <p>延迟delay时间后调用函数</p>
@@ -249,6 +243,7 @@ func main() {
 ```go
 func Delay(delay time.Duration, fn any, args ...any)
 ```
+
 <b>例子:</b>
 
 ```go
@@ -260,15 +255,17 @@ import (
 )
 
 func main() {
-	var print = func(s string) {
+    var print = func(s string) {
-		fmt.Println(count) //test delay
+        fmt.Println(s)
-	}
+    }
-	function.Delay(2*time.Second, print, "test delay")
+
+    function.Delay(2*time.Second, print, "hello")
+
+    // Output:
+    // hello
 }
 ```
 
-
-
 ### <span id="Schedule">Schedule</span>
 
 <p>每次持续时间调用函数，直到关闭返回的 bool chan</p>
@@ -278,6 +275,7 @@ func main() {
 ```go
 func Schedule(d time.Duration, fn any, args ...any) chan bool
 ```
+
 <b>例子:</b>
 
 ```go
@@ -289,21 +287,24 @@ import (
 )
 
 func main() {
-    var res []string
+    count := 0
-	appendStr := func(s string) {
-		res = append(res, s)
-	}
 
-	stop := function.Schedule(1*time.Second, appendStr, "*")
+    increase := func() {
-	time.Sleep(5 * time.Second)
+        count++
-	close(stop)
+    }
 
-	fmt.Println(res) //[* * * * *]
+    stop := function.Schedule(2*time.Second, increase)
+
+    time.Sleep(2 * time.Second)
+    close(stop)
+
+    fmt.Println(count)
+
+    // Output:
+    // 2
 }
 ```
 
-
-
 ### <span id="Pipeline">Pipeline</span>
 
 <p>执行函数pipeline.</p>
@@ -313,6 +314,7 @@ func main() {
 ```go
 func Pipeline[T any](funcs ...func(T) T) func(T) T
 ```
+
 <b>例子:</b>
 
 ```go
@@ -325,23 +327,26 @@ import (
 
 func main() {
     addOne := func(x int) int {
-		return x + 1
+        return x + 1
-	}
+    }
-	double := func(x int) int {
+    double := func(x int) int {
-		return 2 * x
+        return 2 * x
-	}
+    }
-	square := func(x int) int {
+    square := func(x int) int {
-		return x * x
+        return x * x
-	}
+    }
 
-	f := Pipeline(addOne, double, square)
+    fn := function.Pipeline(addOne, double, square)
 
-	fmt.Println(fn(2)) //36
+    result := fn(2)
+
+    fmt.Println(result)
+
+    // Output:
+    // 36
 }
 ```
 
-
-
 ### <span id="Watcher">Watcher</span>
 
 <p>Watcher用于记录代码执行时间。可以启动/停止/重置手表定时器。获取函数执行的时间。</p>
@@ -350,9 +355,9 @@ func main() {
 
 ```go
 type Watcher struct {
-	startTime int64
+    startTime int64
-	stopTime  int64
+    stopTime  int64
-	excuting  bool
+    excuting  bool
 }
 func NewWatcher() *Watcher
 func (w *Watcher) Start() //start the watcher
@@ -360,6 +365,7 @@ func (w *Watcher) Stop() //stop the watcher
 func (w *Watcher) Reset() //reset the watcher
 func (w *Watcher) GetElapsedTime() time.Duration //get the elapsed time of function execution
 ```
+
 <b>例子:</b>
 
 ```go
@@ -373,30 +379,27 @@ import (
 func main() {
     w := function.NewWatcher()
 
-	w.Start()
+    w.Start()
 
-	longRunningTask()
+    longRunningTask()
 
-	fmt.Println(w.excuting) //true
+    fmt.Println(w.excuting) //true
 
-	w.Stop()
+    w.Stop()
 
-	eapsedTime := w.GetElapsedTime().Milliseconds()
+    eapsedTime := w.GetElapsedTime().Milliseconds()
-	
-	fmt.Println(eapsedTime)
 
-	w.Reset()
+    fmt.Println(eapsedTime)
+
+    w.Reset()
 
 }
 
 func longRunningTask() {
-	var slice []int64
+    var slice []int64
-	for i := 0; i < 10000000; i++ {
+    for i := 0; i < 10000000; i++ {
-		slice = append(slice, int64(i))
+        slice = append(slice, int64(i))
-	}
+    }
 }
 
 ```
-
-
-

docs/maputil.md

@@ -1,16 +1,17 @@
 # Maputil
+
 Package maputil includes some functions to manipulate map.
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Source:
 
-- [https://github.com/duke-git/lancet/blob/main/maputil/map.go](https://github.com/duke-git/lancet/blob/main/maputil/map.go)
+-   [https://github.com/duke-git/lancet/blob/main/maputil/map.go](https://github.com/duke-git/lancet/blob/main/maputil/map.go)
-
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Example:
+
 ```go
 import (
     "github.com/duke-git/lancet/v2/maputil"
@@ -20,22 +21,22 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## Index
-- [ForEach](#ForEach)
+
-- [Filter](#Filter)
+-   [ForEach](#ForEach)
-- [Intersect](#Intersect)
+-   [Filter](#Filter)
-- [Keys](#Keys)
+-   [Intersect](#Intersect)
-- [Merge](#Merge)
+-   [Keys](#Keys)
-- [Minus](#Minus)
+-   [Merge](#Merge)
-- [Values](#Values)
+-   [Minus](#Minus)
-- [IsDisjoint](#IsDisjoint)
+-   [Values](#Values)
+-   [IsDisjoint](#IsDisjoint)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Documentation
 
-
-
 ### <span id="ForEach">ForEach</span>
+
 <p>Executes iteratee funcation for every key and value pair in map.</p>
 
 <b>Signature:</b>
@@ -43,6 +44,7 @@ import (
 ```go
 func ForEach[K comparable, V any](m map[K]V, iteratee func(key K, value V))
 ```
+
 <b>Example:</b>
 
 ```go
@@ -54,26 +56,28 @@ import (
 )
 
 func main() {
-	m := map[string]int{
+    m := map[string]int{
-		"a": 1,
+        "a": 1,
-		"b": 2,
+        "b": 2,
-		"c": 3,
+        "c": 3,
-		"d": 4,
+        "d": 4,
-	}
+    }
 
-	var sum int
+    var sum int
 
-	maputil.ForEach(m, func(_ string, value int) {
+    maputil.ForEach(m, func(_ string, value int) {
-		sum += value
+        sum += value
-	})
+    })
-	fmt.Println(sum) // 10
+
+    fmt.Println(sum)
+
+    // Output:
+    // 10
 }
 ```
 
-
-
-
 ### <span id="Filter">Filter</span>
+
 <p>Iterates over map, return a new map contains all key and value pairs pass the predicate function.</p>
 
 <b>Signature:</b>
@@ -81,6 +85,7 @@ func main() {
 ```go
 func Filter[K comparable, V any](m map[K]V, predicate func(key K, value V) bool) map[K]V
 ```
+
 <b>Example:</b>
 
 ```go
@@ -92,29 +97,32 @@ import (
 )
 
 func main() {
-	m := map[string]int{
+    m := map[string]int{
-		"a": 1,
+        "a": 1,
-		"b": 2,
+        "b": 2,
-		"c": 3,
+        "c": 3,
-		"d": 4,
+        "d": 4,
-		"e": 5,
+        "e": 5,
-	}
+    }
-	isEven := func(_ string, value int) bool {
+    isEven := func(_ string, value int) bool {
-		return value%2 == 0
+        return value%2 == 0
-	}
+    }
 
-	maputil.Filter(m, func(_ string, value int) {
+    maputil.Filter(m, func(_ string, value int) {
-		sum += value
+        sum += value
-	})
+    })
-	res := maputil.Filter(m, isEven)
+    
-	fmt.Println(res) // map[string]int{"b": 2, "d": 4,}
+    result := maputil.Filter(m, isEven)
+
+    fmt.Println(result)
+
+    // Output:
+    // map[b:2 d:4]
 }
 ```
 
-
-
-
 ### <span id="Intersect">Intersect</span>
+
 <p>Iterates over maps, return a new map of key and value pairs in all given maps.</p>
 
 <b>Signature:</b>
@@ -122,6 +130,7 @@ func main() {
 ```go
 func Intersect[K comparable, V any](maps ...map[K]V) map[K]V
 ```
+
 <b>Example:</b>
 
 ```go
@@ -133,37 +142,42 @@ import (
 )
 
 func main() {
-	m1 := map[string]int{
+    m1 := map[string]int{
-		"a": 1,
+        "a": 1,
-		"b": 2,
+        "b": 2,
-		"c": 3,
+        "c": 3,
-	}
+    }
 
-	m2 := map[string]int{
+    m2 := map[string]int{
-		"a": 1,
+        "a": 1,
-		"b": 2,
+        "b": 2,
-		"c": 6,
+        "c": 6,
-		"d": 7,
+        "d": 7,
-	}
+    }
 
-	m3 := map[string]int{
+    m3 := map[string]int{
-		"a": 1,
+        "a": 1,
-		"b": 9,
+        "b": 9,
-		"e": 9,
+        "e": 9,
-	}
+    }
 
-	fmt.Println(maputil.Intersect(m1)) // map[string]int{"a": 1, "b": 2, "c": 3}
+    result1 := maputil.Intersect(m1)
+    result2 := maputil.Intersect(m1, m2)
+    result3 := maputil.Intersect(m1, m2, m3)
 
-	fmt.Println(maputil.Intersect(m1, m2)) // map[string]int{"a": 1, "b": 2}
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
 
-	fmt.Println(maputil.Intersect(m1, m2, m3)) // map[string]int{"a": 1}
+    // Output:
+    // map[a:1 b:2 c:3]
+    // map[a:1 b:2]
+    // map[a:1]
 }
 ```
 
-
-
-
 ### <span id="Keys">Keys</span>
+
 <p>Returns a slice of the map's keys.</p>
 
 <b>Signature:</b>
@@ -171,6 +185,7 @@ func main() {
 ```go
 func Keys[K comparable, V any](m map[K]V) []K
 ```
+
 <b>Example:</b>
 
 ```go
@@ -182,24 +197,26 @@ import (
 )
 
 func main() {
-	m := map[int]string{
+    m := map[int]string{
-		1: "a",
+        1: "a",
-		2: "a",
+        2: "a",
-		3: "b",
+        3: "b",
-		4: "c",
+        4: "c",
-		5: "d",
+        5: "d",
-	}
+    }
 
-	keys := maputil.Keys(m)
+    keys := maputil.Keys(m)
-	sort.Ints(keys)
+    sort.Ints(keys)
-	fmt.Println(keys) // []int{1, 2, 3, 4, 5}
+    
+    fmt.Println(keys)
+
+    // Output:
+    // [1 2 3 4 5]
 }
 ```
 
-
-
-
 ### <span id="Merge">Merge</span>
+
 <p>Merge maps, next key will overwrite previous key.</p>
 
 <b>Signature:</b>
@@ -207,6 +224,7 @@ func main() {
 ```go
 func Merge[K comparable, V any](maps ...map[K]V) map[K]V
 ```
+
 <b>Example:</b>
 
 ```go
@@ -218,22 +236,26 @@ import (
 )
 
 func main() {
-	m1 := map[int]string{
+    m1 := map[int]string{
-		1: "a",
+        1: "a",
-		2: "b",
+        2: "b",
-	}
+    }
-	m2 := map[int]string{
+    m2 := map[int]string{
-		1: "1",
+        1: "1",
-		3: "2",
+        3: "2",
-	}
+    }
-	fmt.Println(maputil.Merge(m1, m2)) // map[int]string{1:"1", 2:"b", 3:"2",}
+
+    result := maputil.Merge(m1, m2)
+
+    fmt.Println(result)
+
+    // Output:
+    // map[1:c 2:b 3:d]
 }
 ```
 
-
-
-
 ### <span id="Minus">Minus</span>
+
 <p>Creates an map of whose key in mapA but not in mapB.</p>
 
 <b>Signature:</b>
@@ -241,6 +263,7 @@ func main() {
 ```go
 func Minus[K comparable, V any](mapA, mapB map[K]V) map[K]V
 ```
+
 <b>Example:</b>
 
 ```go
@@ -252,25 +275,29 @@ import (
 )
 
 func main() {
-	m1 := map[string]int{
+    m1 := map[string]int{
-		"a": 1,
+        "a": 1,
-		"b": 2,
+        "b": 2,
-		"c": 3,
+        "c": 3,
-	}
+    }
 
-	m2 := map[string]int{
+    m2 := map[string]int{
-		"a": 11,
+        "a": 11,
-		"b": 22,
+        "b": 22,
-		"d": 33,
+        "d": 33,
-	}
+    }
+    
+    result := maputil.Minus(m1, m2)
 
-	fmt.Println(maputil.Minus(m1, m2)) //map[string]int{"c": 3}
+    fmt.Println(result)
+
+    // Output:
+    // map[c:3]
 }
 ```
 
-
-
 ### <span id="Values">Values</span>
+
 <p>Returns a slice of the map's values.</p>
 
 <b>Signature:</b>
@@ -278,6 +305,7 @@ func main() {
 ```go
 func Values[K comparable, V any](m map[K]V) []V
 ```
+
 <b>Example:</b>
 
 ```go
@@ -289,22 +317,26 @@ import (
 )
 
 func main() {
-	m := map[int]string{
+    m := map[int]string{
-		1: "a",
+        1: "a",
-		2: "a",
+        2: "a",
-		3: "b",
+        3: "b",
-		4: "c",
+        4: "c",
-		5: "d",
+        5: "d",
-	}
+    }
 
-	values := maputil.Values(m)
+    values := maputil.Values(m)
-	sort.Strings(values)
+    sort.Strings(values)
 
-	fmt.Println(values) // []string{"a", "a", "b", "c", "d"}
+    fmt.Println(values)
+
+    // Output:
+    // [a a b c d]
 }
 ```
 
 ### <span id="IsDisjoint">IsDisjoint</span>
+
 <p>Checks two maps are disjoint if they have no keys in common</p>
 
 <b>Signature:</b>
@@ -312,6 +344,7 @@ func main() {
 ```go
 func IsDisjoint[K comparable, V any](mapA, mapB map[K]V) bool
 ```
+
 <b>Example:</b>
 
 ```go
@@ -323,30 +356,28 @@ import (
 )
 
 func main() {
-	m1 := map[int]string{
+    m1 := map[string]int{
-		1: "a",
+        "a": 1,
-		2: "a",
+        "b": 2,
-		3: "b",
+        "c": 3,
-		4: "c",
+    }
-		5: "d",
-	}
 
-	m2 := map[int]string{
+    m2 := map[string]int{
-		1: "a",
+        "d": 22,
-		2: "a",
+    }
-		3: "b",
-		4: "c",
-		5: "d",
-	}
 
-	m3 := map[int]string{
+    m3 := map[string]int{
-		6: "a",
+        "a": 22,
-	}
+    }
 
-	ok := maputil.IsDisjoint(m2, m1)
+    result1 := maputil.IsDisjoint(m1, m2)
-	fmt.Println(ok) // false
+    result2 := maputil.IsDisjoint(m1, m3)
 
-	ok = maputil.IsDisjoint(m2, m3)
+    fmt.Println(result1)
-	fmt.Println(ok) // true
+    fmt.Println(result2)
+
+    // Output:
+    // true
+    // false
 }
-```
+```

docs/maputil_zh-CN.md

@@ -1,16 +1,17 @@
 # Maputil
-maputil包包括一些操作map的函数。
+
+maputil 包包括一些操作 map 的函数。
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 源码:
 
-- [https://github.com/duke-git/lancet/blob/main/maputil/map.go](https://github.com/duke-git/lancet/blob/main/maputil/map.go)
+-   [https://github.com/duke-git/lancet/blob/main/maputil/map.go](https://github.com/duke-git/lancet/blob/main/maputil/map.go)
-
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 用法:
+
 ```go
 import (
     "github.com/duke-git/lancet/v2/maputil"
@@ -20,22 +21,22 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## 目录:
-- [ForEach](#ForEach)
+
-- [Filter](#Filter)
+-   [ForEach](#ForEach)
-- [Intersect](#Intersect)
+-   [Filter](#Filter)
-- [Keys](#Keys)
+-   [Intersect](#Intersect)
-- [Merge](#Merge)
+-   [Keys](#Keys)
-- [Minus](#Minus)
+-   [Merge](#Merge)
-- [Values](#Values)
+-   [Minus](#Minus)
-- [IsDisjoint](#IsDisjoint)
+-   [Values](#Values)
+-   [IsDisjoint](#IsDisjoint)
 
 <div STYLE="page-break-after: always;"></div>
 
-## API文档:
+## API 文档:
-
-
 
 ### <span id="ForEach">ForEach</span>
+
 <p>对map中的每对key和value执行iteratee函数</p>
 
 <b>函数签名:</b>
@@ -43,6 +44,7 @@ import (
 ```go
 func ForEach[K comparable, V any](m map[K]V, iteratee func(key K, value V))
 ```
+
 <b>例子:</b>
 
 ```go
@@ -54,26 +56,28 @@ import (
 )
 
 func main() {
-	m := map[string]int{
+    m := map[string]int{
-		"a": 1,
+        "a": 1,
-		"b": 2,
+        "b": 2,
-		"c": 3,
+        "c": 3,
-		"d": 4,
+        "d": 4,
-	}
+    }
 
-	var sum int
+    var sum int
 
-	maputil.ForEach(m, func(_ string, value int) {
+    maputil.ForEach(m, func(_ string, value int) {
-		sum += value
+        sum += value
-	})
+    })
-	fmt.Println(sum) // 10
+    
+    fmt.Println(sum)
+
+    // Output:
+    // 10
 }
 ```
 
-
-
-
 ### <span id="Filter">Filter</span>
+
 <p>迭代map中的每对key和value, 返回符合predicate函数的key, value</p>
 
 <b>函数签名:</b>
@@ -81,6 +85,7 @@ func main() {
 ```go
 func Filter[K comparable, V any](m map[K]V, predicate func(key K, value V) bool) map[K]V
 ```
+
 <b>例子:</b>
 
 ```go
@@ -92,29 +97,32 @@ import (
 )
 
 func main() {
-	m := map[string]int{
+    m := map[string]int{
-		"a": 1,
+        "a": 1,
-		"b": 2,
+        "b": 2,
-		"c": 3,
+        "c": 3,
-		"d": 4,
+        "d": 4,
-		"e": 5,
+        "e": 5,
-	}
+    }
-	isEven := func(_ string, value int) bool {
+    isEven := func(_ string, value int) bool {
-		return value%2 == 0
+        return value%2 == 0
-	}
+    }
 
-	maputil.Filter(m, func(_ string, value int) {
+    maputil.Filter(m, func(_ string, value int) {
-		sum += value
+        sum += value
-	})
+    })
-	res := maputil.Filter(m, isEven)
+    
-	fmt.Println(res) // map[string]int{"b": 2, "d": 4,}
+    result := Filter(m, isEven)
+
+    fmt.Println(result)
+
+    // Output:
+    // map[b:2 d:4]
 }
 ```
 
-
-
-
 ### <span id="Intersect">Intersect</span>
+
 <p>多个map的交集操作</p>
 
 <b>函数签名:</b>
@@ -122,6 +130,7 @@ func main() {
 ```go
 func Intersect[K comparable, V any](maps ...map[K]V) map[K]V
 ```
+
 <b>例子:</b>
 
 ```go
@@ -133,37 +142,42 @@ import (
 )
 
 func main() {
-	m1 := map[string]int{
+    m1 := map[string]int{
-		"a": 1,
+        "a": 1,
-		"b": 2,
+        "b": 2,
-		"c": 3,
+        "c": 3,
-	}
+    }
 
-	m2 := map[string]int{
+    m2 := map[string]int{
-		"a": 1,
+        "a": 1,
-		"b": 2,
+        "b": 2,
-		"c": 6,
+        "c": 6,
-		"d": 7,
+        "d": 7,
-	}
+    }
 
-	m3 := map[string]int{
+    m3 := map[string]int{
-		"a": 1,
+        "a": 1,
-		"b": 9,
+        "b": 9,
-		"e": 9,
+        "e": 9,
-	}
+    }
 
-	fmt.Println(maputil.Intersect(m1)) // map[string]int{"a": 1, "b": 2, "c": 3}
+    result1 := maputil.Intersect(m1)
+    result2 := maputil.Intersect(m1, m2)
+    result3 := maputil.Intersect(m1, m2, m3)
 
-	fmt.Println(maputil.Intersect(m1, m2)) // map[string]int{"a": 1, "b": 2}
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
 
-	fmt.Println(maputil.Intersect(m1, m2, m3)) // map[string]int{"a": 1}
+    // Output:
+    // map[a:1 b:2 c:3]
+    // map[a:1 b:2]
+    // map[a:1]
 }
 ```
 
-
-
-
 ### <span id="Keys">Keys</span>
+
 <p>返回map中所有key的切片</p>
 
 <b>函数签名:</b>
@@ -171,6 +185,7 @@ func main() {
 ```go
 func Keys[K comparable, V any](m map[K]V) []K
 ```
+
 <b>例子:</b>
 
 ```go
@@ -182,24 +197,26 @@ import (
 )
 
 func main() {
-	m := map[int]string{
+    m := map[int]string{
-		1: "a",
+        1: "a",
-		2: "a",
+        2: "a",
-		3: "b",
+        3: "b",
-		4: "c",
+        4: "c",
-		5: "d",
+        5: "d",
-	}
+    }
 
-	keys := maputil.Keys(m)
+    keys := maputil.Keys(m)
-	sort.Ints(keys)
+    sort.Ints(keys)
-	fmt.Println(keys) // []int{1, 2, 3, 4, 5}
+    
+    fmt.Println(keys)
+
+    // Output:
+    // [1 2 3 4 5]
 }
 ```
 
-
-
-
 ### <span id="Merge">Merge</span>
+
 <p>合并多个maps, 相同的key会被后来的key覆盖</p>
 
 <b>函数签名:</b>
@@ -207,6 +224,7 @@ func main() {
 ```go
 func Merge[K comparable, V any](maps ...map[K]V) map[K]V
 ```
+
 <b>例子:</b>
 
 ```go
@@ -218,21 +236,26 @@ import (
 )
 
 func main() {
-	m1 := map[int]string{
+    m1 := map[int]string{
-		1: "a",
+        1: "a",
-		2: "b",
+        2: "b",
-	}
+    }
-	m2 := map[int]string{
+    m2 := map[int]string{
-		1: "1",
+        1: "1",
-		3: "2",
+        3: "2",
-	}
+    }
-	fmt.Println(maputil.Merge(m1, m2)) // map[int]string{1:"1", 2:"b", 3:"2",}
+    
+    result := maputil.Merge(m1, m2)
+
+    fmt.Println(result)
+
+    // Output:
+    // map[1:c 2:b 3:d]
 }
 ```
 
-
-
 ### <span id="Minus">Minus</span>
+
 <p>返回一个map，其中的key存在于mapA，不存在于mapB.</p>
 
 <b>函数签名:</b>
@@ -240,6 +263,7 @@ func main() {
 ```go
 func Minus[K comparable, V any](mapA, mapB map[K]V) map[K]V
 ```
+
 <b>例子:</b>
 
 ```go
@@ -251,25 +275,29 @@ import (
 )
 
 func main() {
-	m1 := map[string]int{
+    m1 := map[string]int{
-		"a": 1,
+        "a": 1,
-		"b": 2,
+        "b": 2,
-		"c": 3,
+        "c": 3,
-	}
+    }
 
-	m2 := map[string]int{
+    m2 := map[string]int{
-		"a": 11,
+        "a": 11,
-		"b": 22,
+        "b": 22,
-		"d": 33,
+        "d": 33,
-	}
+    }
 
-	fmt.Println(maputil.Minus(m1, m2)) //map[string]int{"c": 3}
+    result := maputil.Minus(m1, m2)
+
+    fmt.Println(result)
+
+    // Output:
+    // map[c:3]
 }
 ```
 
-
-
 ### <span id="Values">Values</span>
+
 <p>返回map中所有value的切片</p>
 
 <b>函数签名:</b>
@@ -277,6 +305,7 @@ func main() {
 ```go
 func Values[K comparable, V any](m map[K]V) []V
 ```
+
 <b>例子:</b>
 
 ```go
@@ -288,23 +317,24 @@ import (
 )
 
 func main() {
-	m := map[int]string{
+    m := map[int]string{
-		1: "a",
+        1: "a",
-		2: "a",
+        2: "a",
-		3: "b",
+        3: "b",
-		4: "c",
+        4: "c",
-		5: "d",
+        5: "d",
-	}
+    }
 
-	values := maputil.Values(m)
+    values := maputil.Values(m)
-	sort.Strings(values)
+    sort.Strings(values)
 
-	fmt.Println(values) // []string{"a", "a", "b", "c", "d"}
+    // Output:
+    // [a a b c d]
 }
 ```
 
-
 ### <span id="IsDisjoint">IsDisjoint</span>
+
 <p>验证两个map是否具有不同的key</p>
 
 <b>函数签名:</b>
@@ -312,6 +342,7 @@ func main() {
 ```go
 func IsDisjoint[K comparable, V any](mapA, mapB map[K]V) bool
 ```
+
 <b>例子:</b>
 
 ```go
@@ -323,30 +354,28 @@ import (
 )
 
 func main() {
-	m1 := map[int]string{
+    m1 := map[string]int{
-		1: "a",
+        "a": 1,
-		2: "a",
+        "b": 2,
-		3: "b",
+        "c": 3,
-		4: "c",
+    }
-		5: "d",
-	}
 
-	m2 := map[int]string{
+    m2 := map[string]int{
-		1: "a",
+        "d": 22,
-		2: "a",
+    }
-		3: "b",
-		4: "c",
-		5: "d",
-	}
 
-	m3 := map[int]string{
+    m3 := map[string]int{
-		6: "a",
+        "a": 22,
-	}
+    }
 
-	ok := maputil.IsDisjoint(m2, m1)
+    result1 := maputil.IsDisjoint(m1, m2)
-	fmt.Println(ok) // false
+    result2 := maputil.IsDisjoint(m1, m3)
 
-	ok = maputil.IsDisjoint(m2, m3)
+    fmt.Println(result1)
-	fmt.Println(ok) // true
+    fmt.Println(result2)
+
+    // Output:
+    // true
+    // false
 }
-```
+```

docs/mathutil.md

@@ -1,16 +1,17 @@
 # Mathutil
+
 Package mathutil implements some functions for math calculation.
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Source:
 
-- [https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go](https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go)
+-   [https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go](https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go)
-
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Example:
+
 ```go
 import (
     "github.com/duke-git/lancet/v2/mathutil"
@@ -20,26 +21,26 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## Index
-- [Average](#Average)
+
-- [Exponent](#Exponent)
+-   [Average](#Average)
-- [Fibonacci](#Fibonacci)
+-   [Exponent](#Exponent)
-- [Factorial](#Factorial)
+-   [Fibonacci](#Fibonacci)
-- [Max](#Max)
+-   [Factorial](#Factorial)
-- [MaxBy](#MaxBy)
+-   [Max](#Max)
-- [Min](#Min)
+-   [MaxBy](#MaxBy)
-- [MinBy](#MaxBy)
+-   [Min](#Min)
-- [Percent](#Percent)
+-   [MinBy](#MaxBy)
-- [RoundToFloat](#RoundToFloat)
+-   [Percent](#Percent)
-- [RoundToString](#RoundToString)
+-   [RoundToFloat](#RoundToFloat)
-- [TruncRound](#TruncRound)
+-   [RoundToString](#RoundToString)
+-   [TruncRound](#TruncRound)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Documentation
 
-
-
 ### <span id="Average">Average</span>
+
 <p>Return average value of numbers. Maybe call RoundToFloat to round result.</p>
 
 <b>Signature:</b>
@@ -47,6 +48,7 @@ import (
 ```go
 func Average[T constraints.Integer | constraints.Float](numbers ...T) T
 ```
+
 <b>Example:</b>
 
 ```go
@@ -58,16 +60,22 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Average(0, 0)) //0
+    result1 := mathutil.Average(1, 2)
-	fmt.Println(mathutil.Average(1, 1)) //1
+
-	avg := mathutil.Average(1.2, 1.4) //1.2999999998
+    avg := mathutil.Average(1.2, 1.4)
-	roundAvg := mmathutil.RoundToFloat(avg, 1) // 1.3
+    result2 := mathutil.RoundToFloat(avg, 1)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // 1
+    // 1.3
 }
 ```
 
-
-
 ### <span id="Exponent">Exponent</span>
+
 <p>Calculate x to the nth power.</p>
 
 <b>Signature:</b>
@@ -75,6 +83,7 @@ func main() {
 ```go
 func Exponent(x, n int64) int64
 ```
+
 <b>Example:</b>
 
 ```go
@@ -86,15 +95,23 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Exponent(10, 0)) //1
+    result1 := mathutil.Exponent(10, 0)
-	fmt.Println(mathutil.Exponent(10, 1)) //10
+    result2 := mathutil.Exponent(10, 1)
-	fmt.Println(mathutil.Exponent(10, 2)) //100
+    result3 := mathutil.Exponent(10, 2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 1
+    // 10
+    // 100
 }
 ```
 
-
-
 ### <span id="Fibonacci">Fibonacci</span>
+
 <p>Calculate the nth number of fibonacci sequence.</p>
 
 <b>Signature:</b>
@@ -102,6 +119,7 @@ func main() {
 ```go
 func Fibonacci(first, second, n int) int
 ```
+
 <b>Example:</b>
 
 ```go
@@ -113,17 +131,23 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Fibonacci(1, 1, 1)) //1
+    result1 := mathutil.Fibonacci(1, 1, 1)
-	fmt.Println(mathutil.Fibonacci(1, 1, 2)) //1
+    result2 := mathutil.Fibonacci(1, 1, 2)
-	fmt.Println(mathutil.Fibonacci(1, 1, 3)) //2
+    result3 := mathutil.Fibonacci(1, 1, 5)
-	fmt.Println(mathutil.Fibonacci(1, 1, 4)) //3
+
-	fmt.Println(mathutil.Fibonacci(1, 1, 5)) //5
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 1
+    // 1
+    // 5
 }
 ```
 
-
-
 ### <span id="Factorial">Factorial</span>
+
 <p>Calculate the factorial of x.</p>
 
 <b>Signature:</b>
@@ -131,6 +155,7 @@ func main() {
 ```go
 func Factorial(x uint) uint
 ```
+
 <b>Example:</b>
 
 ```go
@@ -142,16 +167,23 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Factorial(0)) //1
+    result1 := mathutil.Factorial(1)
-	fmt.Println(mathutil.Factorial(1)) //1
+    result2 := mathutil.Factorial(2)
-	fmt.Println(mathutil.Factorial(2)) //2
+    result3 := mathutil.Factorial(3)
-	fmt.Println(mathutil.Factorial(3)) //6
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 1
+    // 2
+    // 6
 }
 ```
 
-
-
 ### <span id="Max">Max</span>
+
 <p>Return max value of numbers.</p>
 
 <b>Signature:</b>
@@ -159,6 +191,7 @@ func main() {
 ```go
 func Max[T constraints.Integer | constraints.Float](numbers ...T) T
 ```
+
 <b>Example:</b>
 
 ```go
@@ -170,23 +203,28 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Max(0, 0)) //0
+    result1 := mathutil.Max(1, 2, 3)
-	fmt.Println(mathutil.Max(1, 2, 3)) //3
+    result2 := mathutil.Max(1.2, 1.4, 1.1, 1.4)
-	fmt.Println(mathutil.Max(1.2, 1.4, 1.1, 1.4)) //1.4
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // 3
+    // 1.4
 }
 ```
 
-
-
-
 ### <span id="MaxBy">MaxBy</span>
+
 <p>Return the maximum value of a slice using the given comparator function.</p>
 
 <b>Signature:</b>
 
 ```go
-func MaxBy[T any](slice []T, comparator func(T, T) bool) T 
+func MaxBy[T any](slice []T, comparator func(T, T) bool) T
 ```
+
 <b>Example:</b>
 
 ```go
@@ -198,26 +236,31 @@ import (
 )
 
 func main() {
-	res1 := mathutil.MaxBy([]string{"a", "ab", "abc"}, func(v1, v2 string) bool {
+    result1 := mathutil.MaxBy([]string{"a", "ab", "abc"}, func(v1, v2 string) bool {
-		return len(v1) > len(v2)
+        return len(v1) > len(v2)
-	})
+    })
-	fmt.Println(res1) //abc
 
-	res2 := mathutil.MaxBy([]string{"abd", "abc", "ab"}, func(v1, v2 string) bool {
+    result2 := mathutil.MaxBy([]string{"abd", "abc", "ab"}, func(v1, v2 string) bool {
-		return len(v1) > len(v2)
+        return len(v1) > len(v2)
-	})
+    })
-	fmt.Println(res2) //abd
 
-	res3 := mathutil.MaxBy([]string{}, func(v1, v2 string) bool {
+    result3 := mathutil.MaxBy([]string{}, func(v1, v2 string) bool {
-		return len(v1) > len(v2)
+        return len(v1) > len(v2)
-	})
+    })
-	fmt.Println(res3) //“”
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // abc
+    // abd
+    //
 }
 ```
 
-
-
 ### <span id="Min">Min</span>
+
 <p>Return the minimum value of numbers.</p>
 
 <b>Signature:</b>
@@ -225,6 +268,7 @@ func main() {
 ```go
 func Min[T constraints.Integer | constraints.Float](numbers ...T) T
 ```
+
 <b>Example:</b>
 
 ```go
@@ -236,22 +280,28 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Min(0, 0)) //0
+    result1 := mathutil.Min(1, 2, 3)
-	fmt.Println(mathutil.Min(1, 2, 3)) //1
+    result2 := mathutil.Min(1.2, 1.4, 1.1, 1.4)
-	fmt.Println(mathutil.Min(1.2, 1.4, 1.1, 1.4)) //1.1
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // 1
+    // 1.1
 }
 ```
 
-
-
 ### <span id="MinBy">MinBy</span>
+
 <p>Return the minimum value of a slice using the given comparator function.</p>
 
 <b>Signature:</b>
 
 ```go
-func MinBy[T any](slice []T, comparator func(T, T) bool) T 
+func MinBy[T any](slice []T, comparator func(T, T) bool) T
 ```
+
 <b>Example:</b>
 
 ```go
@@ -263,27 +313,31 @@ import (
 )
 
 func main() {
-	res1 := mathutil.MinBy([]string{"a", "ab", "abc"}, func(v1, v2 string) bool {
+    result1 := mathutil.MinBy([]string{"a", "ab", "abc"}, func(v1, v2 string) bool {
-		return len(v1) < len(v2)
+        return len(v1) < len(v2)
-	})
+    })
-	fmt.Println(res1) //a
 
-	res2 := mathutil.MinBy([]string{"ab", "ac", "abc"}, func(v1, v2 string) bool {
+    result2 := mathutil.MinBy([]string{"ab", "ac", "abc"}, func(v1, v2 string) bool {
-		return len(v1) < len(v2)
+        return len(v1) < len(v2)
-	})
+    })
-	fmt.Println(res2) //ab
 
-	res3 := mathutil.MinBy([]string{}, func(v1, v2 string) bool {
+    result3 := mathutil.MinBy([]string{}, func(v1, v2 string) bool {
-		return len(v1) < len(v2)
+        return len(v1) < len(v2)
-	})
+    })
-	fmt.Println(res3) //“”
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // a
+    // ab
+    //
 }
 ```
 
-
-
-
 ### <span id="Percent">Percent</span>
+
 <p>calculate the percentage of val to total, retain n decimal places.</p>
 
 <b>Signature:</b>
@@ -291,6 +345,7 @@ func main() {
 ```go
 func Percent(val, total float64, n int) float64
 ```
+
 <b>Example:</b>
 
 ```go
@@ -302,14 +357,20 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Percent(1, 2, 2)) //0.5
+    result1 := mathutil.Percent(1, 2, 2)
-	fmt.Println(mathutil.Percent(0.1, 0.3, 2)) //0.33
+    result2 := mathutil.Percent(0.1, 0.3, 2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // 0.5
+    // 0.33
 }
 ```
 
-
-
 ### <span id="RoundToFloat">RoundToFloat</span>
+
 <p>Round float up to n decimal places.</p>
 
 <b>Signature:</b>
@@ -317,6 +378,7 @@ func main() {
 ```go
 func RoundToFloat(x float64, n int) float64
 ```
+
 <b>Example:</b>
 
 ```go
@@ -328,18 +390,23 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.RoundToFloat(0, 0)) //0
+    result1 := mathutil.RoundToFloat(0.124, 2)
-	fmt.Println(mathutil.RoundToFloat(0, 1)) //0
+    result2 := mathutil.RoundToFloat(0.125, 2)
-	fmt.Println(mathutil.RoundToFloat(0.124, 2)) //0.12
+    result3 := mathutil.RoundToFloat(0.125, 3)
-	fmt.Println(mathutil.RoundToFloat(0.125, 2)) //0.13
+
-	fmt.Println(mathutil.RoundToFloat(0.125, 3)) //0.125
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 0.12
+    // 0.13
+    // 0.125
 }
 ```
 
-
-
-
 ### <span id="RoundToString">RoundToString</span>
+
 <p>Round float up to n decimal places. will return string.</p>
 
 <b>Signature:</b>
@@ -347,6 +414,7 @@ func main() {
 ```go
 func RoundToString(x float64, n int) string
 ```
+
 <b>Example:</b>
 
 ```go
@@ -358,17 +426,23 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.RoundToString(0, 0)) //"0"
+    result1 := mathutil.RoundToString(0.124, 2)
-	fmt.Println(mathutil.RoundToString(0, 1)) //"0.0:
+    result2 := mathutil.RoundToString(0.125, 2)
-	fmt.Println(mathutil.RoundToString(0.124, 2)) //"0.12"
+    result3 := mathutil.RoundToString(0.125, 3)
-	fmt.Println(mathutil.RoundToString(0.125, 2)) //"0.13"
+
-	fmt.Println(mathutil.RoundToString(0.125, 3)) //"0.125"
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 0.12
+    // 0.13
+    // 0.125
 }
 ```
 
-
-
 ### <span id="TruncRound">TruncRound</span>
+
 <p>Round float off n decimal places.</p>
 
 <b>Signature:</b>
@@ -376,6 +450,7 @@ func main() {
 ```go
 func TruncRound(x float64, n int) float64
 ```
+
 <b>Example:</b>
 
 ```go
@@ -387,13 +462,17 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.TruncRound(0, 0)) //0
+    result1 := mathutil.TruncRound(0.124, 2)
-	fmt.Println(mathutil.TruncRound(0, 1)) //0
+    result2 := mathutil.TruncRound(0.125, 2)
-	fmt.Println(mathutil.TruncRound(0.124, 2)) //0.12
+    result3 := mathutil.TruncRound(0.125, 3)
-	fmt.Println(mathutil.TruncRound(0.125, 2)) //0.12
+
-	fmt.Println(mathutil.TruncRound(0.125, 3)) //0.125
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 0.12
+    // 0.12
+    // 0.125
 }
 ```
-
-
-

docs/mathutil_zh-CN.md

@@ -1,16 +1,17 @@
 # Mathutil
-mathutil包实现了一些数学计算的函数.
+
+mathutil 包实现了一些数学计算的函数.
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 源码:
 
-- [https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go](https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go)
+-   [https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go](https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go)
-
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 用法:
+
 ```go
 import (
     "github.com/duke-git/lancet/v2/mathutil"
@@ -20,25 +21,26 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## 目录
-- [Average](#Average)
+
-- [Exponent](#Exponent)
+-   [Average](#Average)
-- [Fibonacci](#Fibonacci)
+-   [Exponent](#Exponent)
-- [Factorial](#Factorial)
+-   [Fibonacci](#Fibonacci)
-- [Max](#Max)
+-   [Factorial](#Factorial)
-- [MaxBy](#MaxBy)
+-   [Max](#Max)
-- [Min](#Min)
+-   [MaxBy](#MaxBy)
-- [MinBy](#MaxBy)
+-   [Min](#Min)
-- [Percent](#Percent)
+-   [MinBy](#MaxBy)
-- [RoundToFloat](#RoundToFloat)
+-   [Percent](#Percent)
-- [RoundToString](#RoundToString)
+-   [RoundToFloat](#RoundToFloat)
-- [TruncRound](#TruncRound)
+-   [RoundToString](#RoundToString)
+-   [TruncRound](#TruncRound)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Documentation
 
-
 ### <span id="Average">Average</span>
+
 <p>计算平均数. 可能需要对结果调用RoundToFloat方法四舍五入</p>
 
 <b>函数签名:</b>
@@ -46,6 +48,7 @@ import (
 ```go
 func Average[T constraints.Integer | constraints.Float](numbers ...T) T
 ```
+
 <b>例子:</b>
 
 ```go
@@ -57,15 +60,22 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Average(0, 0)) //0
+    result1 := mathutil.Average(1, 2)
-	fmt.Println(mathutil.Average(1, 1)) //1
+
-	avg := mathutil.Average(1.2, 1.4) //1.2999999998
+    avg := mathutil.Average(1.2, 1.4)
-	roundAvg := mmathutil.RoundToFloat(avg, 1) // 1.3
+    result2 := mathutil.RoundToFloat(avg, 1)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // 1
+    // 1.3
 }
 ```
 
-
 ### <span id="Exponent">Exponent</span>
+
 <p>指数计算（x的n次方）</p>
 
 <b>函数签名:</b>
@@ -73,6 +83,7 @@ func main() {
 ```go
 func Exponent(x, n int64) int64
 ```
+
 <b>例子:</b>
 
 ```go
@@ -84,15 +95,23 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Exponent(10, 0)) //1
+    result1 := mathutil.Exponent(10, 0)
-	fmt.Println(mathutil.Exponent(10, 1)) //10
+    result2 := mathutil.Exponent(10, 1)
-	fmt.Println(mathutil.Exponent(10, 2)) //100
+    result3 := mathutil.Exponent(10, 2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 1
+    // 10
+    // 100
 }
 ```
 
-
-
 ### <span id="Fibonacci">Fibonacci</span>
+
 <p>计算斐波那契数列的第n个数</p>
 
 <b>函数签名:</b>
@@ -100,6 +119,7 @@ func main() {
 ```go
 func Fibonacci(first, second, n int) int
 ```
+
 <b>例子:</b>
 
 ```go
@@ -111,17 +131,23 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Fibonacci(1, 1, 1)) //1
+    result1 := mathutil.Fibonacci(1, 1, 1)
-	fmt.Println(mathutil.Fibonacci(1, 1, 2)) //1
+    result2 := mathutil.Fibonacci(1, 1, 2)
-	fmt.Println(mathutil.Fibonacci(1, 1, 3)) //2
+    result3 := mathutil.Fibonacci(1, 1, 5)
-	fmt.Println(mathutil.Fibonacci(1, 1, 4)) //3
+
-	fmt.Println(mathutil.Fibonacci(1, 1, 5)) //5
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 1
+    // 1
+    // 5
 }
 ```
 
-
-
 ### <span id="Factorial">Factorial</span>
+
 <p>计算阶乘</p>
 
 <b>函数签名:</b>
@@ -129,6 +155,7 @@ func main() {
 ```go
 func Factorial(x uint) uint
 ```
+
 <b>例子:</b>
 
 ```go
@@ -140,15 +167,23 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Factorial(0)) //1
+    result1 := mathutil.Factorial(1)
-	fmt.Println(mathutil.Factorial(1)) //1
+    result2 := mathutil.Factorial(2)
-	fmt.Println(mathutil.Factorial(2)) //2
+    result3 := mathutil.Factorial(3)
-	fmt.Println(mathutil.Factorial(3)) //6
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 1
+    // 2
+    // 6
 }
 ```
 
-
 ### <span id="Max">Max</span>
+
 <p>返回参数中的最大数</p>
 
 <b>函数签名:</b>
@@ -156,6 +191,7 @@ func main() {
 ```go
 func Max[T constraints.Integer | constraints.Float](numbers ...T) T
 ```
+
 <b>例子:</b>
 
 ```go
@@ -167,22 +203,28 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Max(0, 0)) //0
+    result1 := mathutil.Max(1, 2, 3)
-	fmt.Println(mathutil.Max(1, 2, 3)) //3
+    result2 := mathutil.Max(1.2, 1.4, 1.1, 1.4)
-	fmt.Println(mathutil.Max(1.2, 1.4, 1.1, 1.4)) //1.4
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // 3
+    // 1.4
 }
 ```
 
-
-
 ### <span id="MaxBy">MaxBy</span>
+
 <p>使用给定的比较器函数返回切片的最大值</p>
 
 <b>函数签名:</b>
 
 ```go
-func MaxBy[T any](slice []T, comparator func(T, T) bool) T 
+func MaxBy[T any](slice []T, comparator func(T, T) bool) T
 ```
+
 <b>例子:</b>
 
 ```go
@@ -194,27 +236,31 @@ import (
 )
 
 func main() {
-	res1 := mathutil.MaxBy([]string{"a", "ab", "abc"}, func(v1, v2 string) bool {
+    result1 := mathutil.MaxBy([]string{"a", "ab", "abc"}, func(v1, v2 string) bool {
-		return len(v1) > len(v2)
+        return len(v1) > len(v2)
-	})
+    })
-	fmt.Println(res1) //abc
 
-	res2 := mathutil.MaxBy([]string{"abd", "abc", "ab"}, func(v1, v2 string) bool {
+    result2 := mathutil.MaxBy([]string{"abd", "abc", "ab"}, func(v1, v2 string) bool {
-		return len(v1) > len(v2)
+        return len(v1) > len(v2)
-	})
+    })
-	fmt.Println(res2) //abd
 
-	res3 := mathutil.MaxBy([]string{}, func(v1, v2 string) bool {
+    result3 := mathutil.MaxBy([]string{}, func(v1, v2 string) bool {
-		return len(v1) > len(v2)
+        return len(v1) > len(v2)
-	})
+    })
-	fmt.Println(res3) //“”
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // abc
+    // abd
+    //
 }
 ```
 
-
-
-
 ### <span id="Min">Min</span>
+
 <p>返回参数中的最小数</p>
 
 <b>函数签名:</b>
@@ -222,6 +268,7 @@ func main() {
 ```go
 func Min[T constraints.Integer | constraints.Float](numbers ...T) T
 ```
+
 <b>例子:</b>
 
 ```go
@@ -233,22 +280,28 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Min(0, 0)) //0
+    result1 := mathutil.Min(1, 2, 3)
-	fmt.Println(mathutil.Min(1, 2, 3)) //1
+    result2 := mathutil.Min(1.2, 1.4, 1.1, 1.4)
-	fmt.Println(mathutil.Min(1.2, 1.4, 1.1, 1.4)) //1.1
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // 1
+    // 1.1
 }
 ```
 
-
-
 ### <span id="MinBy">MinBy</span>
+
 <p>使用给定的比较器函数返回切片的最小值</p>
 
 <b>函数签名:</b>
 
 ```go
-func MinBy[T any](slice []T, comparator func(T, T) bool) T 
+func MinBy[T any](slice []T, comparator func(T, T) bool) T
 ```
+
 <b>例子:</b>
 
 ```go
@@ -260,27 +313,31 @@ import (
 )
 
 func main() {
-	res1 := mathutil.MinBy([]string{"a", "ab", "abc"}, func(v1, v2 string) bool {
+    result1 := mathutil.MinBy([]string{"a", "ab", "abc"}, func(v1, v2 string) bool {
-		return len(v1) < len(v2)
+        return len(v1) < len(v2)
-	})
+    })
-	fmt.Println(res1) //a
 
-	res2 := mathutil.MinBy([]string{"ab", "ac", "abc"}, func(v1, v2 string) bool {
+    result2 := mathutil.MinBy([]string{"ab", "ac", "abc"}, func(v1, v2 string) bool {
-		return len(v1) < len(v2)
+        return len(v1) < len(v2)
-	})
+    })
-	fmt.Println(res2) //ab
 
-	res3 := mathutil.MinBy([]string{}, func(v1, v2 string) bool {
+    result3 := mathutil.MinBy([]string{}, func(v1, v2 string) bool {
-		return len(v1) < len(v2)
+        return len(v1) < len(v2)
-	})
+    })
-	fmt.Println(res3) //“”
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // a
+    // ab
+    //
 }
 ```
 
-
-
-
 ### <span id="Percent">Percent</span>
+
 <p>计算百分比，保留n位小数</p>
 
 <b>函数签名:</b>
@@ -288,6 +345,7 @@ func main() {
 ```go
 func Percent(val, total float64, n int) float64
 ```
+
 <b>例子:</b>
 
 ```go
@@ -299,14 +357,20 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Percent(1, 2, 2)) //0.5
+    result1 := mathutil.Percent(1, 2, 2)
-	fmt.Println(mathutil.Percent(0.1, 0.3, 2)) //0.33
+    result2 := mathutil.Percent(0.1, 0.3, 2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // 0.5
+    // 0.33
 }
 ```
 
-
-
 ### <span id="RoundToFloat">RoundToFloat</span>
+
 <p>四舍五入，保留n位小数</p>
 
 <b>函数签名:</b>
@@ -314,6 +378,7 @@ func main() {
 ```go
 func RoundToFloat(x float64, n int) float64
 ```
+
 <b>例子:</b>
 
 ```go
@@ -325,18 +390,23 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.RoundToFloat(0, 0)) //0
+    result1 := mathutil.RoundToFloat(0.124, 2)
-	fmt.Println(mathutil.RoundToFloat(0, 1)) //0
+    result2 := mathutil.RoundToFloat(0.125, 2)
-	fmt.Println(mathutil.RoundToFloat(0.124, 2)) //0.12
+    result3 := mathutil.RoundToFloat(0.125, 3)
-	fmt.Println(mathutil.RoundToFloat(0.125, 2)) //0.13
+
-	fmt.Println(mathutil.RoundToFloat(0.125, 3)) //0.125
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 0.12
+    // 0.13
+    // 0.125
 }
 ```
 
-
-
-
 ### <span id="RoundToString">RoundToString</span>
+
 <p>四舍五入，保留n位小数，返回字符串</p>
 
 <b>函数签名:</b>
@@ -344,6 +414,7 @@ func main() {
 ```go
 func RoundToString(x float64, n int) string
 ```
+
 <b>例子:</b>
 
 ```go
@@ -355,17 +426,23 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.RoundToString(0, 0)) //"0"
+    result1 := mathutil.RoundToString(0.124, 2)
-	fmt.Println(mathutil.RoundToString(0, 1)) //"0.0:
+    result2 := mathutil.RoundToString(0.125, 2)
-	fmt.Println(mathutil.RoundToString(0.124, 2)) //"0.12"
+    result3 := mathutil.RoundToString(0.125, 3)
-	fmt.Println(mathutil.RoundToString(0.125, 2)) //"0.13"
+
-	fmt.Println(mathutil.RoundToString(0.125, 3)) //"0.125"
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 0.12
+    // 0.13
+    // 0.125
 }
 ```
 
-
-
 ### <span id="TruncRound">TruncRound</span>
+
 <p>截短n位小数（不进行四舍五入）</p>
 
 <b>函数签名:</b>
@@ -373,6 +450,7 @@ func main() {
 ```go
 func TruncRound(x float64, n int) float64
 ```
+
 <b>例子:</b>
 
 ```go
@@ -384,13 +462,17 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.TruncRound(0, 0)) //0
+    result1 := mathutil.TruncRound(0.124, 2)
-	fmt.Println(mathutil.TruncRound(0, 1)) //0
+    result2 := mathutil.TruncRound(0.125, 2)
-	fmt.Println(mathutil.TruncRound(0.124, 2)) //0.12
+    result3 := mathutil.TruncRound(0.125, 3)
-	fmt.Println(mathutil.TruncRound(0.125, 2)) //0.12
+
-	fmt.Println(mathutil.TruncRound(0.125, 3)) //0.125
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 0.12
+    // 0.12
+    // 0.125
 }
 ```
-
-
-

docs/strutil.md

@@ -64,19 +64,27 @@ import (
 )
 
 func main() {
-	s1 := strutil.After("lancet", "")
+	result1 := strutil.After("foo", "")
-	fmt.Println(s1) //lancet
+	result2 := strutil.After("foo", "foo")
+	result3 := strutil.After("foo/bar", "foo")
+	result4 := strutil.After("foo/bar", "/")
+	result5 := strutil.After("foo/bar/baz", "/")
 
-	s2 := strutil.After("github.com/test/lancet", "/")
+	fmt.Println(result1)
-	fmt.Println(s2) //test/lancet
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
 
-	s3 := strutil.After("github.com/test/lancet", "test")
+	// Output:
-	fmt.Println(s3) // /lancet
+	// foo
+	//
+	// /bar
+	// bar
+	// bar/baz
 }
 ```
 
-
-
 ### <span id="AfterLast">AfterLast</span>
 <p>Returns the substring after the last occurrence of a specified string in the source string.</p>
 
@@ -94,20 +102,27 @@ import (
 )
 
 func main() {
-	s1 := strutil.AfterLast("lancet", "")
+	result1 := strutil.AfterLast("foo", "")
-	fmt.Println(s1) //lancet
+	result2 := strutil.AfterLast("foo", "foo")
+	result3 := strutil.AfterLast("foo/bar", "/")
+	result4 := strutil.AfterLast("foo/bar/baz", "/")
+	result5 := strutil.AfterLast("foo/bar/foo/baz", "foo")
 
-	s2 := strutil.AfterLast("github.com/test/lancet", "/")
+	fmt.Println(result1)
-	fmt.Println(s2) //lancet
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
 
-	s3 := strutil.AfterLast("github.com/test/test/lancet", "test")
+	// Output:
-	fmt.Println(s3) // /test/lancet
+	// foo
+	//
+	// bar
+	// baz
+	// /baz
 }
 ```
 
-
-
-
 ### <span id="Before">Before</span>
 <p>Returns the substring of the source string up to the first occurrence of the specified string.</p>
 
@@ -125,20 +140,24 @@ import (
 )
 
 func main() {
-	s1 := strutil.Before("lancet", "")
+	result1 := strutil.Before("foo", "")
-	fmt.Println(s1) //lancet
+	result2 := strutil.Before("foo", "foo")
+	result3 := strutil.Before("foo/bar", "/")
+	result4 := strutil.Before("foo/bar/baz", "/")
 
-	s2 := strutil.Before("github.com/test/lancet", "/")
+	fmt.Println(result1)
-	fmt.Println(s2) //github.com
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
 
-	s3 := strutil.Before("github.com/test/lancet", "test")
+	// Output:
-	fmt.Println(s3) // github.com/
+	// foo
+	//
+	// foo
+	// foo
 }
 ```
 
-
-
-
 ### <span id="BeforeLast">BeforeLast</span>
 <p>Returns the substring of the source string up to the last occurrence of the specified string.</p>
 
@@ -156,18 +175,24 @@ import (
 )
 
 func main() {
-	s1 := strutil.BeforeLast("lancet", "")
+	result1 := strutil.BeforeLast("foo", "")
-	fmt.Println(s1) //lancet
+	result2 := strutil.BeforeLast("foo", "foo")
+	result3 := strutil.BeforeLast("foo/bar", "/")
+	result4 := strutil.BeforeLast("foo/bar/baz", "/")
 
-	s2 := strutil.BeforeLast("github.com/test/lancet", "/")
+	fmt.Println(result1)
-	fmt.Println(s2) //github.com/test
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
 
-	s3 := strutil.BeforeLast("github.com/test/test/lancet", "test")
+	// Output:
-	fmt.Println(s3) //github.com/test/
+	// foo
+	//
+	// foo
+	// foo/bar
 }
 ```
 
-
 ### <span id="CamelCase">CamelCase</span>
 <p>Coverts string to camelCase string, non letters and numbers will be ignored.</p>
 
@@ -185,25 +210,22 @@ import (
 )
 
 func main() {
-	s1 := strutil.CamelCase("foo_bar")
+	strings := []string{"", "foobar", "&FOO:BAR$BAZ", "$foo%", "Foo-#1😄$_%^&*(1bar"}
-	fmt.Println(s1) //fooBar
 
-	s2 := strutil.CamelCase("Foo-Bar")
+	for _, v := range strings {
-	fmt.Println(s2) //fooBar
+		s := strutil.CamelCase(v)
-
+		fmt.Println(s)
-	s3 := strutil.CamelCase("Foo&bar")
+	}
-	fmt.Println(s3) //fooBar
-
-	s4 := strutil.CamelCase("foo bar")
-	fmt.Println(s4) //fooBar
-
-	s4 := strutil.CamelCase("Foo-#1😄$_%^&*(1bar")
-	fmt.Println(s4) //foo11Bar
 
+	// Output:
+	//
+	// foobar
+	// fooBarBaz
+	// foo
+	// foo11Bar
 }
 ```
 
-
 ### <span id="KebabCase">KebabCase</span>
 <p>KebabCase covert string to kebab-case, non letters and numbers will be ignored.</p>
 
@@ -221,29 +243,29 @@ import (
 )
 
 func main() {
-	s1 := strutil.KebabCase("Foo Bar-")
+	strings := []string{"", "foo-bar", "Foo Bar-", "FOOBAR", "Foo-#1😄$_%^&*(1bar"}
-	fmt.Println(s1) //foo-bar
 
-	s2 := strutil.KebabCase("foo_Bar")
+	for _, v := range strings {
-	fmt.Println(s2) //foo-bar
+		s := strutil.KebabCase(v)
+		fmt.Println(s)
+	}
 
-	s3 := strutil.KebabCase("fooBar")
+	// Output:
-	fmt.Println(s3) //foo-bar
+	//
-
+	// foo-bar
-	s4 := strutil.KebabCase("__FOO_BAR__")
+	// foo-bar
-	fmt.Println(s4) //foo-bar
+	// foobar
+	// foo-1-1-bar
 }
 ```
 
-
-
 ### <span id="UpperKebabCase">UpperKebabCase</span>
 <p>UpperKebabCase covert string to upper KEBAB-CASE, non letters and numbers will be ignored.</p>
 
 <b>Signature:</b>
 
 ```go
-func KebabCase(s string) string
+func UpperKebabCase(s string) string
 ```
 <b>Example:</b>
 
@@ -254,23 +276,22 @@ import (
 )
 
 func main() {
-	s1 := strutil.UpperKebabCase("Foo Bar-")
+	strings := []string{"", "foo-bar", "Foo Bar-", "FooBAR", "Foo-#1😄$_%^&*(1bar"}
-	fmt.Println(s1) //FOO-BAR
 
-	s2 := strutil.UpperKebabCase("foo_Bar")
+	for _, v := range strings {
-	fmt.Println(s2) //FOO-BAR
+		s := strutil.UpperKebabCase(v)
+		fmt.Println(s)
+	}
 
-	s3 := strutil.UpperKebabCase("fooBar")
+	// Output:
-	fmt.Println(s3) //FOO-BAR
+	//
-
+	// FOO-BAR
-	s4 := strutil.UpperKebabCase("__FOO_BAR__")
+	// FOO-BAR
-	fmt.Println(s4) //FOO-BAR
+	// FOO-BAR
+	// FOO-1-1-BAR
 }
 ```
 
-
-
-
 ### <span id="Capitalize">Capitalize</span>
 <p>Convert the first character of a string to upper case.</p>
 
@@ -288,19 +309,22 @@ import (
 )
 
 func main() {
-	s1 := strutil.Capitalize("foo")
+	strings := []string{"", "Foo", "_foo", "fooBar", "foo-bar"}
-	fmt.Println(s1) //foo
 
-	s2 := strutil.Capitalize("Foo")
+	for _, v := range strings {
-	fmt.Println(s2) //foo
+		s := strutil.Capitalize(v)
+		fmt.Println(s)
+	}
 
-	s3 := strutil.Capitalize("FOo"
+	// Output:
-	fmt.Println(s3) //fOo
+	//
+	// Foo
+	// _foo
+	// Foobar
+	// Foo-bar
 }
 ```
 
-
-
 ### <span id="IsString">IsString</span>
 <p>Check if the value's data type is string.</p>
 
@@ -318,51 +342,27 @@ import (
 )
 
 func main() {
-	fmt.Println(strutil.IsString("lancet")) //true
+	result1 := strutil.IsString("")
-	fmt.Println(strutil.IsString("")) //true
+	result2 := strutil.IsString("a")
+	result3 := strutil.IsString(1)
+	result4 := strutil.IsString(true)
+	result5 := strutil.IsString([]string{"a"})
 
-	fmt.Println(strutil.IsString(1)) //false
+	fmt.Println(result1)
-	fmt.Println(strutil.IsString("")) //false
+	fmt.Println(result2)
-	fmt.Println(strutil.IsString([]string{})) //false
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+
+	// Output:
+	// true
+	// true
+	// false
+	// false
+	// false
 }
 ```
 
-
-
-### <span id="KebabCase">KebabCase</span>
-<p>Covert string to kebab-case.</p>
-
-<b>Signature:</b>
-
-```go
-func KebabCase(s string) string
-```
-<b>Example:</b>
-
-```go
-import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/strutil"
-)
-
-func main() {
-	s1 := strutil.KebabCase("Foo Bar-")
-	fmt.Println(s1) //foo-bar
-
-	s2 := strutil.KebabCase("foo_Bar")
-	fmt.Println(s2) //foo-bar
-
-	s3 := strutil.KebabCase("fooBar")
-	fmt.Println(s3) //foo-bar
-
-	s4 := strutil.KebabCase("__FOO_BAR__")
-	fmt.Println(s4) //f-o-o-b-a-r
-}
-```
-
-
-
-
 ### <span id="LowerFirst">LowerFirst</span>
 <p>Convert the first character of string to lower case.</p>
 
@@ -380,23 +380,21 @@ import (
 )
 
 func main() {
-	s1 := strutil.LowerFirst("foo")
+	strings := []string{"", "bar", "BAr", "Bar大"}
-	fmt.Println(s1) //foo
 
-	s2 := strutil.LowerFirst("BAR")
+	for _, v := range strings {
-	fmt.Println(s2) //bAR
+		s := strutil.LowerFirst(v)
+		fmt.Println(s)
+	}
 
-	s3 := strutil.LowerFirst("FOo")
+	// Output:
-	fmt.Println(s3) //fOo
+	//
-
+	// bar
-	s4 := strutil.LowerFirst("fOo大")
+	// bAr
-	fmt.Println(s4) //fOo大
+	// bar大
 }
 ```
 
-
-
-
 ### <span id="UpperFirst">UpperFirst</span>
 <p>Convert the first character of string to upper case.</p>
 
@@ -414,23 +412,21 @@ import (
 )
 
 func main() {
-	s1 := strutil.UpperFirst("foo")
+	strings := []string{"", "bar", "BAr", "bar大"}
-	fmt.Println(s1) //Foo
 
-	s2 := strutil.UpperFirst("bAR")
+	for _, v := range strings {
-	fmt.Println(s2) //BAR
+		s := strutil.UpperFirst(v)
+		fmt.Println(s)
+	}
 
-	s3 := strutil.UpperFirst("FOo")
+	// Output:
-	fmt.Println(s3) //FOo
+	//
-
+	// Bar
-	s4 := strutil.UpperFirst("fOo大")
+	// BAr
-	fmt.Println(s4) //FOo大
+	// Bar大
 }
 ```
 
-
-
-
 ### <span id="PadEnd">PadEnd</span>
 <p>Pads string on the right side if it's shorter than size.</p>
 
@@ -448,23 +444,33 @@ import (
 )
 
 func main() {
-	s1 := strutil.PadEnd("a", 1, "b")
+	result1 := strutil.PadEnd("foo", 1, "bar")
-	fmt.Println(s1) //a
+	result2 := strutil.PadEnd("foo", 2, "bar")
+	result3 := strutil.PadEnd("foo", 3, "bar")
+	result4 := strutil.PadEnd("foo", 4, "bar")
+	result5 := strutil.PadEnd("foo", 5, "bar")
+	result6 := strutil.PadEnd("foo", 6, "bar")
+	result7 := strutil.PadEnd("foo", 7, "bar")
 
-	s2 := strutil.PadEnd("a", 2, "b")
+	fmt.Println(result1)
-	fmt.Println(s2) //ab
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	fmt.Println(result6)
+	fmt.Println(result7)
 
-	s3 := strutil.PadEnd("abcd", 6, "mno")
+	// Output:
-	fmt.Println(s3) //abcdmn
+	// foo
-
+	// foo
-	s4 := strutil.PadEnd("abc", 6, "ab")
+	// foo
-	fmt.Println(s4) //abcaba
+	// foob
+	// fooba
+	// foobar
+	// foobarb
 }
 ```
 
-
-
-
 ### <span id="PadStart">PadStart</span>
 <p>Pads string on the left side if it's shorter than size.</p>
 
@@ -482,23 +488,33 @@ import (
 )
 
 func main() {
-	s1 := strutil.PadStart("a", 1, "b")
+	result1 := strutil.PadStart("foo", 1, "bar")
-	fmt.Println(s1) //a
+	result2 := strutil.PadStart("foo", 2, "bar")
+	result3 := strutil.PadStart("foo", 3, "bar")
+	result4 := strutil.PadStart("foo", 4, "bar")
+	result5 := strutil.PadStart("foo", 5, "bar")
+	result6 := strutil.PadStart("foo", 6, "bar")
+	result7 := strutil.PadStart("foo", 7, "bar")
 
-	s2 := strutil.PadStart("a", 2, "b")
+	fmt.Println(result1)
-	fmt.Println(s2) //ba
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	fmt.Println(result6)
+	fmt.Println(result7)
 
-	s3 := strutil.PadStart("abcd", 6, "mno")
+	// Output:
-	fmt.Println(s3) //mnabcd
+	// foo
-
+	// foo
-	s4 := strutil.PadStart("abc", 6, "ab")
+	// foo
-	fmt.Println(s4) //abaabc
+	// bfoo
+	// bafoo
+	// barfoo
+	// barbfoo
 }
 ```
 
-
-
-
 ### <span id="Reverse">Reverse</span>
 <p>Return string whose char order is reversed to the given string.</p>
 
@@ -516,16 +532,18 @@ import (
 )
 
 func main() {
-	s1 := strutil.ReverseStr("abc")
+	s := "foo"
-	fmt.Println(s1) //cba
+	rs := strutil.Reverse(s)
 
-	s2 := strutil.ReverseStr("12345")
+	fmt.Println(s)
-	fmt.Println(s2) //54321
+	fmt.Println(rs)
+
+	// Output:
+	// foo
+	// oof
 }
 ```
 
-
-
 ### <span id="SnakeCase">SnakeCase</span>
 <p>Coverts string to snake_case, non letters and numbers will be ignored.</p>
 
@@ -543,24 +561,22 @@ import (
 )
 
 func main() {
-	s1 := strutil.SnakeCase("Foo Bar-")
+	strings := []string{"", "foo-bar", "Foo Bar-", "FOOBAR", "Foo-#1😄$_%^&*(1bar"}
-	fmt.Println(s1) //foo_bar
 
-	s2 := strutil.SnakeCase("foo_Bar")
+	for _, v := range strings {
-	fmt.Println(s2) //foo_bar
+		s := strutil.SnakeCase(v)
+		fmt.Println(s)
+	}
 
-	s3 := strutil.SnakeCase("fooBar")
+	// Output:
-	fmt.Println(s3) //foo_bar
+	//
-
+	// foo_bar
-	s4 := strutil.SnakeCase("__FOO_BAR__")
+	// foo_bar
-	fmt.Println(s4) //foo_bar
+	// foobar
-
+	// foo_1_1_bar
-	s5 := strutil.SnakeCase("Foo-#1😄$_%^&*(1bar")
-	fmt.Println(s5) //foo_1_1_bar
 }
 ```
 
-
 ### <span id="UpperSnakeCase">UpperSnakeCase</span>
 <p>Coverts string to upper KEBAB-CASE, non letters and numbers will be ignored.</p>
 
@@ -578,24 +594,22 @@ import (
 )
 
 func main() {
-	s1 := strutil.UpperSnakeCase("Foo Bar-")
+	strings := []string{"", "foo-bar", "Foo Bar-", "FooBAR", "Foo-#1😄$_%^&*(1bar"}
-	fmt.Println(s1) //FOO_BAR
 
-	s2 := strutil.UpperSnakeCase("foo_Bar")
+	for _, v := range strings {
-	fmt.Println(s2) //FOO_BAR
+		s := strutil.UpperSnakeCase(v)
+		fmt.Println(s)
+	}
 
-	s3 := strutil.UpperSnakeCase("fooBar")
+	// Output:
-	fmt.Println(s3) //FOO_BAR
+	//
-
+	// FOO_BAR
-	s4 := strutil.UpperSnakeCase("__FOO_BAR__")
+	// FOO_BAR
-	fmt.Println(s4) //FOO_BAR
+	// FOO_BAR
-
+	// FOO_1_1_BAR
-	s5 := strutil.UpperSnakeCase("Foo-#1😄$_%^&*(1bar")
-	fmt.Println(s5) //FOO_1_1_BAR
 }
 ```
 
-
 ### <span id="SplitEx">SplitEx</span>
 <p>Split a given string whether the result contains empty string.</p>
 
@@ -613,25 +627,28 @@ import (
 )
 
 func main() {
-	arr1 := strutil.SplitEx(" a b c ", "", true)
+	result1 := strutil.SplitEx(" a b c ", "", true)
-	fmt.Println(arr1) //[]string{}
 
-	arr2 := strutil.SplitEx(" a b c ", " ", false)
+	result2 := strutil.SplitEx(" a b c ", " ", false)
-	fmt.Println(arr2) //[]string{"", "a", "b", "c", ""}
+	result3 := strutil.SplitEx(" a b c ", " ", true)
 
-	arr3 := strutil.SplitEx(" a b c ", " ", true)
+	result4 := strutil.SplitEx("a = b = c = ", " = ", false)
-	fmt.Println(arr3) //[]string{"a", "b", "c"}
+	result5 := strutil.SplitEx("a = b = c = ", " = ", true)
 
-	arr4 := strutil.SplitEx(" a = b = c = ", " = ", false)
+	fmt.Println(result1)
-	fmt.Println(arr4) //[]string{" a", "b", "c", ""}
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
 
-	arr5 := strutil.SplitEx(" a = b = c = ", " = ", true)
+	// Output:
-	fmt.Println(arr5) //[]string{" a", "b", "c"}
+	// []
+	// [ a b c ]
+	// [a b c]
+	// [a b c ]
 }
 ```
 
-
-
 ### <span id="Substring">Substring</span>
 <p>Returns a substring of the specified length starting at the specified offset position.</p>
 
@@ -650,22 +667,26 @@ import (
 
 func main() {
 	result1 := strutil.Substring("abcde", 1, 3)
-	fmt.Println(result1) //bcd
-
 	result2 := strutil.Substring("abcde", 1, 5)
-	fmt.Println(result2) //bcde
-
 	result3 := strutil.Substring("abcde", -1, 3)
-	fmt.Println(result3) //e
-
 	result4 := strutil.Substring("abcde", -2, 2)
-	fmt.Println(result4) //de
-
 	result5 := strutil.Substring("abcde", -2, 3)
-	fmt.Println(result5) //de
-
 	result6 := strutil.Substring("你好，欢迎你", 0, 2)
-	fmt.Println(result6) //你好
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	fmt.Println(result6)
+
+	// Output:
+	// bcd
+	// bcde
+	// e
+	// de
+	// de
+	// 你好
 }
 ```
 
@@ -686,26 +707,25 @@ import (
 )
 
 func main() {
-	s1 := strutil.Wrap("ab", "")
+	result1 := strutil.Wrap("foo", "")
-	fmt.Println(s1) //ab
+	result2 := strutil.Wrap("foo", "*")
+	result3 := strutil.Wrap("'foo'", "'")
+	result4 := strutil.Wrap("", "*")
 
-	s2 := strutil.Wrap("", "*")
+	fmt.Println(result1)
-	fmt.Println(s2) //""
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
 
-	s3 := strutil.Wrap("ab", "*")
+	// Output:
-	fmt.Println(s3) //*ab*
+	// foo
-
+	// *foo*
-	s4 := strutil.Wrap("ab", "\"")
+	// ''foo''
-	fmt.Println(s4) //\"ab\"
+	//
-
-	s5 := strutil.Wrap("ab", "'")
-	fmt.Println(s5) //'ab'
 }
 ```
 
 
-
-
 ### <span id="Wrap">Wrap</span>
 <p>Unwrap a given string from anther string. will change source string.</p>
 
@@ -723,20 +743,24 @@ import (
 )
 
 func main() {
-	s1 := strutil.Unwrap("ab", "")
+	result1 := strutil.Unwrap("foo", "")
-	fmt.Println(s1) //ab
+	result2 := strutil.Unwrap("*foo*", "*")
+	result3 := strutil.Unwrap("*foo", "*")
+	result4 := strutil.Unwrap("foo*", "*")
+	result5 := strutil.Unwrap("**foo**", "*")
 
-	s2 := strutil.Unwrap("ab", "*")
+	fmt.Println(result1)
-	fmt.Println(s2) //ab
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
 
-	s3 := strutil.Unwrap("**ab**", "*")
+	// Output:
-	fmt.Println(s3) //*ab*
+	// foo
-
+	// foo
-	s4 := strutil.Unwrap("*ab", "*")
+	// *foo
-	fmt.Println(s4) //*ab
+	// foo*
-
+	// *foo*
-	s5 := strutil.Unwrap("***", "**")
-	fmt.Println(s5) //***
 }
 ```
 

docs/strutil_zh-CN.md

@@ -49,14 +49,14 @@ import (
 
 
 ### <span id="After">After</span>
-<p>返回源字符串中特定字符串首次出现时的位置之后的子字符串</p>
+<p>返回源字符串中特定字符串首次出现时的位置之后的子字符串。</p>
 
 <b>函数签名:</b>
 
 ```go
 func After(s, char string) string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -65,28 +65,36 @@ import (
 )
 
 func main() {
-	s1 := strutil.After("lancet", "")
+	result1 := strutil.After("foo", "")
-	fmt.Println(s1) //lancet
+	result2 := strutil.After("foo", "foo")
+	result3 := strutil.After("foo/bar", "foo")
+	result4 := strutil.After("foo/bar", "/")
+	result5 := strutil.After("foo/bar/baz", "/")
 
-	s2 := strutil.After("github.com/test/lancet", "/")
+	fmt.Println(result1)
-	fmt.Println(s2) //test/lancet
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
 
-	s3 := strutil.After("github.com/test/lancet", "test")
+	// Output:
-	fmt.Println(s3) // /lancet
+	// foo
+	//
+	// /bar
+	// bar
+	// bar/baz
 }
 ```
 
-
-
 ### <span id="AfterLast">AfterLast</span>
-<p>返回源字符串中指定字符串最后一次出现时的位置之后的子字符串</p>
+<p>返回源字符串中指定字符串最后一次出现时的位置之后的子字符串。</p>
 
 <b>函数签名:</b>
 
 ```go
 func AfterLast(s, char string) string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -95,29 +103,36 @@ import (
 )
 
 func main() {
-	s1 := strutil.AfterLast("lancet", "")
+	result1 := strutil.AfterLast("foo", "")
-	fmt.Println(s1) //lancet
+	result2 := strutil.AfterLast("foo", "foo")
+	result3 := strutil.AfterLast("foo/bar", "/")
+	result4 := strutil.AfterLast("foo/bar/baz", "/")
+	result5 := strutil.AfterLast("foo/bar/foo/baz", "foo")
 
-	s2 := strutil.AfterLast("github.com/test/lancet", "/")
+	fmt.Println(result1)
-	fmt.Println(s2) //lancet
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
 
-	s3 := strutil.AfterLast("github.com/test/test/lancet", "test")
+	// Output:
-	fmt.Println(s3) // /lancet
+	// foo
+	//
+	// bar
+	// baz
+	// /baz
 }
 ```
 
-
-
-
 ### <span id="Before">Before</span>
-<p>返回源字符串中指定字符串第一次出现时的位置之前的子字符串</p>
+<p>返回源字符串中指定字符串第一次出现时的位置之前的子字符串。</p>
 
 <b>函数签名:</b>
 
 ```go
 func Before(s, char string) string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -126,29 +141,33 @@ import (
 )
 
 func main() {
-	s1 := strutil.Before("lancet", "")
+	result1 := strutil.Before("foo", "")
-	fmt.Println(s1) //lancet
+	result2 := strutil.Before("foo", "foo")
+	result3 := strutil.Before("foo/bar", "/")
+	result4 := strutil.Before("foo/bar/baz", "/")
 
-	s2 := strutil.Before("github.com/test/lancet", "/")
+	fmt.Println(result1)
-	fmt.Println(s2) //github.com
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
 
-	s3 := strutil.Before("github.com/test/lancet", "test")
+	// Output:
-	fmt.Println(s3) // github.com/
+	// foo
+	//
+	// foo
+	// foo
 }
 ```
 
-
-
-
 ### <span id="BeforeLast">BeforeLast</span>
-<p>返回源字符串中指定字符串最后一次出现时的位置之前的子字符串</p>
+<p>返回源字符串中指定字符串最后一次出现时的位置之前的子字符串。</p>
 
 <b>函数签名:</b>
 
 ```go
 func BeforeLast(s, char string) string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -157,29 +176,33 @@ import (
 )
 
 func main() {
-	s1 := strutil.BeforeLast("lancet", "")
+	result1 := strutil.BeforeLast("foo", "")
-	fmt.Println(s1) //lancet
+	result2 := strutil.BeforeLast("foo", "foo")
+	result3 := strutil.BeforeLast("foo/bar", "/")
+	result4 := strutil.BeforeLast("foo/bar/baz", "/")
 
-	s2 := strutil.BeforeLast("github.com/test/lancet", "/")
+	fmt.Println(result1)
-	fmt.Println(s2) //github.com/test
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
 
-	s3 := strutil.BeforeLast("github.com/test/test/lancet", "test")
+	// Output:
-	fmt.Println(s3) //github.com/test/
+	// foo
+	//
+	// foo
+	// foo/bar
 }
 ```
 
-
-
-
 ### <span id="CamelCase">CamelCase</span>
-<p>将字符串转换为驼峰式字符串, 非字母和数字会被忽略</p>
+<p>将字符串转换为驼峰式字符串, 非字母和数字会被忽略。</p>
 
 <b>函数签名:</b>
 
 ```go
 func CamelCase(s string) string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -188,35 +211,97 @@ import (
 )
 
 func main() {
-	s1 := strutil.CamelCase("foo_bar")
+	strings := []string{"", "foobar", "&FOO:BAR$BAZ", "$foo%", "Foo-#1😄$_%^&*(1bar"}
-	fmt.Println(s1) //fooBar
 
-	s2 := strutil.CamelCase("Foo-Bar")
+	for _, v := range strings {
-	fmt.Println(s2) //fooBar
+		s := strutil.CamelCase(v)
+		fmt.Println(s)
+	}
 
-	s3 := strutil.CamelCase("Foo&bar")
+	// Output:
-	fmt.Println(s3) //fooBar
+	//
-
+	// foobar
-	s4 := strutil.CamelCase("foo bar")
+	// fooBarBaz
-	fmt.Println(s4) //fooBar
+	// foo
-
+	// foo11Bar
-	s4 := strutil.CamelCase("Foo-#1😄$_%^&*(1bar")
-	fmt.Println(s4) //foo11Bar
 }
 ```
 
+### <span id="KebabCase">KebabCase</span>
+<p>将字符串转换为kebab-case, 非字母和数字会被忽略。</p>
 
+<b>函数签名:</b>
 
+```go
+func KebabCase(s string) string
+```
+<b>示例:</b>
+
+```go
+import (
+	"fmt"
+	"github.com/duke-git/lancet/v2/strutil"
+)
+
+func main() {
+	strings := []string{"", "foo-bar", "Foo Bar-", "FOOBAR", "Foo-#1😄$_%^&*(1bar"}
+
+	for _, v := range strings {
+		s := strutil.KebabCase(v)
+		fmt.Println(s)
+	}
+
+	// Output:
+	//
+	// foo-bar
+	// foo-bar
+	// foobar
+	// foo-1-1-bar
+}
+```
+
+### <span id="UpperKebabCase">UpperKebabCase</span>
+<p>将字符串转换为大写KEBAB-CASE, 非字母和数字会被忽略。</p>
+
+<b>函数签名:</b>
+
+```go
+func UpperKebabCase(s string) string
+```
+<b>示例:</b>
+
+```go
+import (
+	"fmt"
+	"github.com/duke-git/lancet/v2/strutil"
+)
+
+func main() {
+	strings := []string{"", "foo-bar", "Foo Bar-", "FooBAR", "Foo-#1😄$_%^&*(1bar"}
+
+	for _, v := range strings {
+		s := strutil.UpperKebabCase(v)
+		fmt.Println(s)
+	}
+
+	// Output:
+	//
+	// FOO-BAR
+	// FOO-BAR
+	// FOO-BAR
+	// FOO-1-1-BAR
+}
+```
 
 ### <span id="Capitalize">Capitalize</span>
-<p>将字符串的第一个字符转换为大写</p>
+<p>将字符串的第一个字符转换为大写。</p>
 
 <b>函数签名:</b>
 
 ```go
 func Capitalize(s string) string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -225,28 +310,31 @@ import (
 )
 
 func main() {
-	s1 := strutil.Capitalize("foo")
+	strings := []string{"", "Foo", "_foo", "fooBar", "foo-bar"}
-	fmt.Println(s1) //foo
 
-	s2 := strutil.Capitalize("Foo")
+	for _, v := range strings {
-	fmt.Println(s2) //foo
+		s := strutil.Capitalize(v)
+		fmt.Println(s)
+	}
 
-	s3 := strutil.Capitalize("FOo"
+	// Output:
-	fmt.Println(s3) //fOo
+	//
+	// Foo
+	// _foo
+	// Foobar
+	// Foo-bar
 }
 ```
 
-
-
 ### <span id="IsString">IsString</span>
-<p>判断传入参数的数据类型是否为字符串</p>
+<p>判断传入参数的数据类型是否为字符串。</p>
 
 <b>函数签名:</b>
 
 ```go
 func IsString(v any) bool
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -255,93 +343,36 @@ import (
 )
 
 func main() {
-	fmt.Println(strutil.IsString("lancet")) //true
+	result1 := strutil.IsString("")
-	fmt.Println(strutil.IsString("")) //true
+	result2 := strutil.IsString("a")
+	result3 := strutil.IsString(1)
+	result4 := strutil.IsString(true)
+	result5 := strutil.IsString([]string{"a"})
 
-	fmt.Println(strutil.IsString(1)) //false
+	fmt.Println(result1)
-	fmt.Println(strutil.IsString("")) //false
+	fmt.Println(result2)
-	fmt.Println(strutil.IsString([]string{})) //false
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+
+	// Output:
+	// true
+	// true
+	// false
+	// false
+	// false
 }
 ```
 
-
-
-### <span id="KebabCase">KebabCase</span>
-<p>将字符串转换为kebab-case, 非字母和数字会被忽略</p>
-
-<b>函数签名:</b>
-
-```go
-func KebabCase(s string) string
-```
-<b>例子:</b>
-
-```go
-import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/strutil"
-)
-
-func main() {
-	s1 := strutil.KebabCase("Foo Bar-")
-	fmt.Println(s1) //foo-bar
-
-	s2 := strutil.KebabCase("foo_Bar")
-	fmt.Println(s2) //foo-bar
-
-	s3 := strutil.KebabCase("fooBar")
-	fmt.Println(s3) //foo-bar
-
-	s4 := strutil.KebabCase("__FOO_BAR__")
-	fmt.Println(s4) //foo-bar
-}
-```
-
-
-
-### <span id="UpperKebabCase">UpperKebabCase</span>
-<p>将字符串转换为大写KEBAB-CASE, 非字母和数字会被忽略</p>
-
-<b>函数签名:</b>
-
-```go
-func KebabCase(s string) string
-```
-<b>例子:</b>
-
-```go
-import (
-	"fmt"
-	"github.com/duke-git/lancet/v2/strutil"
-)
-
-func main() {
-	s1 := strutil.UpperKebabCase("Foo Bar-")
-	fmt.Println(s1) //FOO-BAR
-
-	s2 := strutil.UpperKebabCase("foo_Bar")
-	fmt.Println(s2) //FOO-BAR
-
-	s3 := strutil.UpperKebabCase("fooBar")
-	fmt.Println(s3) //FOO-BAR
-
-	s4 := strutil.UpperKebabCase("__FOO_BAR__")
-	fmt.Println(s4) //FOO-BAR
-}
-```
-
-
-
-
 ### <span id="LowerFirst">LowerFirst</span>
-<p>将字符串的第一个字符转换为小写</p>
+<p>将字符串的第一个字符转换为小写。</p>
 
 <b>函数签名:</b>
 
 ```go
 func LowerFirst(s string) string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -350,32 +381,30 @@ import (
 )
 
 func main() {
-	s1 := strutil.LowerFirst("foo")
+	strings := []string{"", "bar", "BAr", "Bar大"}
-	fmt.Println(s1) //foo
 
-	s2 := strutil.LowerFirst("BAR")
+	for _, v := range strings {
-	fmt.Println(s2) //bAR
+		s := strutil.LowerFirst(v)
+		fmt.Println(s)
+	}
 
-	s3 := strutil.LowerFirst("FOo")
+	// Output:
-	fmt.Println(s3) //fOo
+	//
-
+	// bar
-	s4 := strutil.LowerFirst("fOo大")
+	// bAr
-	fmt.Println(s4) //fOo大
+	// bar大
 }
 ```
 
-
-
-
 ### <span id="UpperFirst">UpperFirst</span>
-<p>将字符串的第一个字符转换为大写形式</p>
+<p>将字符串的第一个字符转换为大写形式。</p>
 
 <b>函数签名:</b>
 
 ```go
 func UpperFirst(s string) string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -384,32 +413,30 @@ import (
 )
 
 func main() {
-	s1 := strutil.UpperFirst("foo")
+	strings := []string{"", "bar", "BAr", "bar大"}
-	fmt.Println(s1) //Foo
 
-	s2 := strutil.UpperFirst("bAR")
+	for _, v := range strings {
-	fmt.Println(s2) //BAR
+		s := strutil.UpperFirst(v)
+		fmt.Println(s)
+	}
 
-	s3 := strutil.UpperFirst("FOo")
+	// Output:
-	fmt.Println(s3) //FOo
+	//
-
+	// Bar
-	s4 := strutil.UpperFirst("fOo大")
+	// BAr
-	fmt.Println(s4) //FOo大
+	// Bar大
 }
 ```
 
-
-
-
 ### <span id="PadEnd">PadEnd</span>
-<p>如果字符串长度短于size，则在右侧填充字符串</p>
+<p>如果字符串长度短于size，则在右侧填充字符串。</p>
 
 <b>函数签名:</b>
 
 ```go
 func PadEnd(source string, size int, padStr string) string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -418,32 +445,42 @@ import (
 )
 
 func main() {
-	s1 := strutil.PadEnd("a", 1, "b")
+	result1 := strutil.PadEnd("foo", 1, "bar")
-	fmt.Println(s1) //a
+	result2 := strutil.PadEnd("foo", 2, "bar")
+	result3 := strutil.PadEnd("foo", 3, "bar")
+	result4 := strutil.PadEnd("foo", 4, "bar")
+	result5 := strutil.PadEnd("foo", 5, "bar")
+	result6 := strutil.PadEnd("foo", 6, "bar")
+	result7 := strutil.PadEnd("foo", 7, "bar")
 
-	s2 := strutil.PadEnd("a", 2, "b")
+	fmt.Println(result1)
-	fmt.Println(s2) //ab
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	fmt.Println(result6)
+	fmt.Println(result7)
 
-	s3 := strutil.PadEnd("abcd", 6, "mno")
+	// Output:
-	fmt.Println(s3) //abcdmn
+	// foo
-
+	// foo
-	s4 := strutil.PadEnd("abc", 6, "ab")
+	// foo
-	fmt.Println(s4) //abcaba
+	// foob
+	// fooba
+	// foobar
+	// foobarb
 }
 ```
 
-
-
-
 ### <span id="PadStart">PadStart</span>
-<p>如果字符串长度短于size，则在左侧填充字符串</p>
+<p>如果字符串长度短于size，则在左侧填充字符串。</p>
 
 <b>函数签名:</b>
 
 ```go
 func PadStart(source string, size int, padStr string) string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -452,32 +489,42 @@ import (
 )
 
 func main() {
-	s1 := strutil.PadStart("a", 1, "b")
+	result1 := strutil.PadStart("foo", 1, "bar")
-	fmt.Println(s1) //a
+	result2 := strutil.PadStart("foo", 2, "bar")
+	result3 := strutil.PadStart("foo", 3, "bar")
+	result4 := strutil.PadStart("foo", 4, "bar")
+	result5 := strutil.PadStart("foo", 5, "bar")
+	result6 := strutil.PadStart("foo", 6, "bar")
+	result7 := strutil.PadStart("foo", 7, "bar")
 
-	s2 := strutil.PadStart("a", 2, "b")
+	fmt.Println(result1)
-	fmt.Println(s2) //ba
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	fmt.Println(result6)
+	fmt.Println(result7)
 
-	s3 := strutil.PadStart("abcd", 6, "mno")
+	// Output:
-	fmt.Println(s3) //mnabcd
+	// foo
-
+	// foo
-	s4 := strutil.PadStart("abc", 6, "ab")
+	// foo
-	fmt.Println(s4) //abaabc
+	// bfoo
+	// bafoo
+	// barfoo
+	// barbfoo
 }
 ```
 
-
-
-
 ### <span id="Reverse">Reverse</span>
-<p>返回字符顺序与给定字符串相反的字符串</p>
+<p>返回字符顺序与给定字符串相反的字符串。</p>
 
 <b>函数签名:</b>
 
 ```go
 func Reverse(s string) string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -486,25 +533,27 @@ import (
 )
 
 func main() {
-	s1 := strutil.ReverseStr("abc")
+	s := "foo"
-	fmt.Println(s1) //cba
+	rs := strutil.Reverse(s)
 
-	s2 := strutil.ReverseStr("12345")
+	fmt.Println(s)
-	fmt.Println(s2) //54321
+	fmt.Println(rs)
+
+	// Output:
+	// foo
+	// oof
 }
 ```
 
-
-
 ### <span id="SnakeCase">SnakeCase</span>
-<p>将字符串转换为snake_case形式, 非字母和数字会被忽略</p>
+<p>将字符串转换为snake_case形式, 非字母和数字会被忽略。</p>
 
 <b>函数签名:</b>
 
 ```go
 func SnakeCase(s string) string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -513,33 +562,31 @@ import (
 )
 
 func main() {
-	s1 := strutil.SnakeCase("Foo Bar-")
+	strings := []string{"", "foo-bar", "Foo Bar-", "FOOBAR", "Foo-#1😄$_%^&*(1bar"}
-	fmt.Println(s1) //foo_bar
 
-	s2 := strutil.SnakeCase("foo_Bar")
+	for _, v := range strings {
-	fmt.Println(s2) //foo_bar
+		s := strutil.SnakeCase(v)
+		fmt.Println(s)
+	}
 
-	s3 := strutil.SnakeCase("fooBar")
+	// Output:
-	fmt.Println(s3) //foo_bar
+	//
-
+	// foo_bar
-	s4 := strutil.SnakeCase("__FOO_BAR__")
+	// foo_bar
-	fmt.Println(s4) //foo_bar
+	// foobar
-
+	// foo_1_1_bar
-	s5 := strutil.SnakeCase("Foo-#1😄$_%^&*(1bar")
-	fmt.Println(s5) //foo_1_1_bar
 }
 ```
 
-
 ### <span id="UpperSnakeCase">UpperSnakeCase</span>
-<p>将字符串转换为大写SNAKE_CASE形式, 非字母和数字会被忽略</p>
+<p>将字符串转换为大写SNAKE_CASE形式, 非字母和数字会被忽略。</p>
 
 <b>函数签名:</b>
 
 ```go
 func SnakeCase(s string) string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -548,34 +595,31 @@ import (
 )
 
 func main() {
-	s1 := strutil.UpperSnakeCase("Foo Bar-")
+	strings := []string{"", "foo-bar", "Foo Bar-", "FooBAR", "Foo-#1😄$_%^&*(1bar"}
-	fmt.Println(s1) //FOO_BAR
 
-	s2 := strutil.UpperSnakeCase("foo_Bar")
+	for _, v := range strings {
-	fmt.Println(s2) //FOO_BAR
+		s := strutil.UpperSnakeCase(v)
+		fmt.Println(s)
+	}
 
-	s3 := strutil.UpperSnakeCase("fooBar")
+	// Output:
-	fmt.Println(s3) //FOO_BAR
+	//
-
+	// FOO_BAR
-	s4 := strutil.UpperSnakeCase("__FOO_BAR__")
+	// FOO_BAR
-	fmt.Println(s4) //FOO_BAR
+	// FOO_BAR
-
+	// FOO_1_1_BAR
-	s5 := strutil.UpperSnakeCase("Foo-#1😄$_%^&*(1bar")
-	fmt.Println(s5) //FOO_1_1_BAR
 }
 ```
 
-
-
 ### <span id="SplitEx">SplitEx</span>
-<p>分割字符串为切片，removeEmptyString参数指定是否去除空字符串</p>
+<p>分割字符串为切片，removeEmptyString参数指定是否去除空字符串。</p>
 
 <b>函数签名:</b>
 
 ```go
 func SplitEx(s, sep string, removeEmptyString bool) []string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -584,32 +628,37 @@ import (
 )
 
 func main() {
-	arr1 := strutil.SplitEx(" a b c ", "", true)
+	result1 := strutil.SplitEx(" a b c ", "", true)
-	fmt.Println(arr1) //[]string{}
 
-	arr2 := strutil.SplitEx(" a b c ", " ", false)
+	result2 := strutil.SplitEx(" a b c ", " ", false)
-	fmt.Println(arr2) //[]string{"", "a", "b", "c", ""}
+	result3 := strutil.SplitEx(" a b c ", " ", true)
 
-	arr3 := strutil.SplitEx(" a b c ", " ", true)
+	result4 := strutil.SplitEx("a = b = c = ", " = ", false)
-	fmt.Println(arr3) //[]string{"a", "b", "c"}
+	result5 := strutil.SplitEx("a = b = c = ", " = ", true)
 
-	arr4 := strutil.SplitEx(" a = b = c = ", " = ", false)
+	fmt.Println(result1)
-	fmt.Println(arr4) //[]string{" a", "b", "c", ""}
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
 
-	arr5 := strutil.SplitEx(" a = b = c = ", " = ", true)
+	// Output:
-	fmt.Println(arr5) //[]string{" a", "b", "c"}
+	// []
+	// [ a b c ]
+	// [a b c]
+	// [a b c ]
 }
 ```
 
 ### <span id="Substring">Substring</span>
-<p>根据指定的位置和长度截取子字符串</p>
+<p>根据指定的位置和长度截取字符串。</p>
 
 <b>函数签名:</b>
 
 ```go
 func Substring(s string, offset int, length uint) string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -619,35 +668,38 @@ import (
 
 func main() {
 	result1 := strutil.Substring("abcde", 1, 3)
-	fmt.Println(result1) //bcd
-
 	result2 := strutil.Substring("abcde", 1, 5)
-	fmt.Println(result2) //bcde
-
 	result3 := strutil.Substring("abcde", -1, 3)
-	fmt.Println(result3) //e
-
 	result4 := strutil.Substring("abcde", -2, 2)
-	fmt.Println(result4) //de
-
 	result5 := strutil.Substring("abcde", -2, 3)
-	fmt.Println(result5) //de
-
 	result6 := strutil.Substring("你好，欢迎你", 0, 2)
-	fmt.Println(result6) //你好
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	fmt.Println(result6)
+
+	// Output:
+	// bcd
+	// bcde
+	// e
+	// de
+	// de
+	// 你好
 }
 ```
 
-
 ### <span id="Wrap">Wrap</span>
-<p>用另一个字符串包裹一个字符串</p>
+<p>用另一个字符串包裹一个字符串。</p>
 
 <b>函数签名:</b>
 
 ```go
 func Wrap(str string, wrapWith string) string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -656,35 +708,34 @@ import (
 )
 
 func main() {
-	s1 := strutil.Wrap("ab", "")
+	result1 := strutil.Wrap("foo", "")
-	fmt.Println(s1) //ab
+	result2 := strutil.Wrap("foo", "*")
+	result3 := strutil.Wrap("'foo'", "'")
+	result4 := strutil.Wrap("", "*")
 
-	s2 := strutil.Wrap("", "*")
+	fmt.Println(result1)
-	fmt.Println(s2) //""
+	fmt.Println(result2)
-
+	fmt.Println(result3)
-	s3 := strutil.Wrap("ab", "*")
+	fmt.Println(result4)
-	fmt.Println(s3) //*ab*
+	
-
+	// Output:
-	s4 := strutil.Wrap("ab", "\"")
+	// foo
-	fmt.Println(s4) //\"ab\"
+	// *foo*
-
+	// ''foo''
-	s5 := strutil.Wrap("ab", "'")
+	//
-	fmt.Println(s5) //'ab'
 }
 ```
 
 
-
+### <span id="Wrap">Wrap</span>
-
+<p>用另一个字符串解开包裹一个字符串。</p>
-### <span id="Unwrap">Unwrap</span>
-<p>用另一个字符串解开包裹一个字符串</p>
 
 <b>函数签名:</b>
 
 ```go
 func Unwrap(str string, wrapToken string) string
 ```
-<b>例子:</b>
+<b>示例:</b>
 
 ```go
 import (
@@ -693,28 +744,23 @@ import (
 )
 
 func main() {
-	s1 := strutil.Unwrap("ab", "")
+	result1 := strutil.Unwrap("foo", "")
-	fmt.Println(s1) //ab
+	result2 := strutil.Unwrap("*foo*", "*")
+	result3 := strutil.Unwrap("*foo", "*")
+	result4 := strutil.Unwrap("foo*", "*")
+	result5 := strutil.Unwrap("**foo**", "*")
 
-	s2 := strutil.Unwrap("ab", "*")
+	fmt.Println(result1)
-	fmt.Println(s2) //ab
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
 
-	s3 := strutil.Unwrap("**ab**", "*")
+	// Output:
-	fmt.Println(s3) //*ab*
+	// foo
-
+	// foo
-	s4 := strutil.Unwrap("*ab", "*")
+	// *foo
-	fmt.Println(s4) //*ab
+	// foo*
-
+	// *foo*
-	s5 := strutil.Unwrap("***", "**")
-	fmt.Println(s5) //***
 }
-```
+```
-
-
-
-
-
-
-
-
-

function/function.go

@@ -47,7 +47,7 @@ func Before(n int, fn any) func(args ...any) []reflect.Value {
 type CurryFn[T any] func(...T) T
 
 // New make a curry function for specific value.
-// Play: Todo
+// Play: https://go.dev/play/p/5HopfDwANKX
 func (cf CurryFn[T]) New(val T) func(...T) T {
 	return func(vals ...T) T {
 		args := append([]T{val}, vals...)
@@ -56,7 +56,7 @@ func (cf CurryFn[T]) New(val T) func(...T) T {
 }
 
 // Compose compose the functions from right to left.
-// Play: Todo
+// Play: https://go.dev/play/p/KKfugD4PKYF
 func Compose[T any](fnList ...func(...T) T) func(...T) T {
 	return func(args ...T) T {
 		firstFn := fnList[0]

function/function_example_test.go

@@ -114,15 +114,15 @@ func ExampleSchedule() {
 		count++
 	}
 
-	stop := Schedule(1*time.Second, increase)
+	stop := Schedule(2*time.Second, increase)
 
-	time.Sleep(3 * time.Second)
+	time.Sleep(2 * time.Second)
 	close(stop)
 
 	fmt.Println(count)
 
 	// Output:
-	// 3
+	// 2
 }
 
 func ExamplePipeline() {

function/watcher.go

@@ -3,7 +3,7 @@ package function
 import "time"
 
 // Watcher is used for record code excution time
-// Play: Todo
+// Play: https://go.dev/play/p/l2yrOpCLd1I
 type Watcher struct {
 	startTime int64
 	stopTime  int64

mathutil/mathutil.go

@@ -55,7 +55,7 @@ func Factorial(x uint) uint {
 }
 
 // Percent calculate the percentage of value to total.
-// Play: Todo
+// Play: https://go.dev/play/p/QQM9B13coSP
 func Percent(val, total float64, n int) float64 {
 	if total == 0 {
 		return float64(0)

strutil/string.go

@@ -283,7 +283,7 @@ func SplitEx(s, sep string, removeEmptyString bool) []string {
 }
 
 // Substring returns a substring of the specified length starting at the specified offset position.
-// Play: Todo
+// Play: https://go.dev/play/p/q3sM6ehnPDp
 func Substring(s string, offset int, length uint) string {
 	rs := []rune(s)
 	size := len(rs)