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doc: format all markdown doc
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@@ -1,5 +1,6 @@
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# Function
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function函数包控制函数执行流程,包含部分函数式编程。
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function 函数包控制函数执行流程,包含部分函数式编程。
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<div STYLE="page-break-after: always;"></div>
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@@ -11,6 +12,7 @@ function函数包控制函数执行流程,包含部分函数式编程。
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<div STYLE="page-break-after: always;"></div>
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## 用法:
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```go
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import (
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"github.com/duke-git/lancet/function"
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@@ -20,21 +22,21 @@ import (
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<div STYLE="page-break-after: always;"></div>
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## 目录
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- [After](#After)
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- [Before](#Before)
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- [Curry](#Curry)
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- [Compose](#Compose)
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- [Debounced](#Debounced)
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- [Delay](#Delay)
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- [Watcher](#Watcher)
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- [After](#After)
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- [Before](#Before)
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- [Curry](#Curry)
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- [Compose](#Compose)
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- [Debounced](#Debounced)
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- [Delay](#Delay)
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- [Watcher](#Watcher)
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<div STYLE="page-break-after: always;"></div>
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## 文档
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### <span id="After">After</span>
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<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>
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<b>函数签名:</b>
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@@ -42,6 +44,7 @@ import (
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```go
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func After(n int, fn interface{}) func(args ...interface{}) []reflect.Value
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```
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<b>例子:</b>
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```go
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@@ -53,33 +56,31 @@ import (
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)
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func main() {
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arr := []string{"a", "b"}
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f := function.After(len(arr), func(i int) int {
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fmt.Println("last print")
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return i
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})
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arr := []string{"a", "b"}
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f := function.After(len(arr), func(i int) int {
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fmt.Println("last print")
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return i
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})
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type cb func(args ...interface{}) []reflect.Value
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print := func(i int, s string, fn cb) {
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fmt.Printf("arr[%d] is %s \n", i, s)
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fn(i)
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}
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type cb func(args ...interface{}) []reflect.Value
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print := func(i int, s string, fn cb) {
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fmt.Printf("arr[%d] is %s \n", i, s)
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fn(i)
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}
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fmt.Println("arr is", arr)
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for i := 0; i < len(arr); i++ {
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print(i, arr[i], f)
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}
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fmt.Println("arr is", arr)
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for i := 0; i < len(arr); i++ {
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print(i, arr[i], f)
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}
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//output:
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// arr is [a b]
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// arr[0] is a
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// arr[1] is b
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// arr[0] is a
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// arr[1] is b
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// last print
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}
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```
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### <span id="Before">Before</span>
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<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>
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@@ -89,6 +90,7 @@ func main() {
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```go
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func Before(n int, fn interface{}) func(args ...interface{}) []reflect.Value
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```
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<b>例子:</b>
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```go
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@@ -101,31 +103,29 @@ import (
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)
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func main() {
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assert := internal.NewAssert(t, "TestBefore")
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assert := internal.NewAssert(t, "TestBefore")
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arr := []string{"a", "b", "c", "d", "e"}
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f := function.Before(3, func(i int) int {
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return i
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})
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arr := []string{"a", "b", "c", "d", "e"}
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f := function.Before(3, func(i int) int {
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return i
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})
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var res []int64
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type cb func(args ...interface{}) []reflect.Value
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appendStr := func(i int, s string, fn cb) {
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v := fn(i)
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res = append(res, v[0].Int())
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}
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var res []int64
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type cb func(args ...interface{}) []reflect.Value
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appendStr := func(i int, s string, fn cb) {
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v := fn(i)
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res = append(res, v[0].Int())
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}
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for i := 0; i < len(arr); i++ {
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appendStr(i, arr[i], f)
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}
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for i := 0; i < len(arr); i++ {
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appendStr(i, arr[i], f)
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}
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expected := []int64{0, 1, 2, 2, 2}
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assert.Equal(expected, res)
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expected := []int64{0, 1, 2, 2, 2}
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assert.Equal(expected, res)
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}
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```
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### <span id="Curry">Curry</span>
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<p>创建一个柯里化的函数</p>
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@@ -136,6 +136,7 @@ func main() {
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type Fn func(...interface{}) interface{}
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func (f Fn) Curry(i interface{}) func(...interface{}) interface{}
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```
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<b>例子:</b>
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```go
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@@ -147,20 +148,18 @@ import (
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)
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func main() {
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add := func(a, b int) int {
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return a + b
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}
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var addCurry function.Fn = func(values ...interface{}) interface{} {
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return add(values[0].(int), values[1].(int))
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}
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add1 := addCurry.Curry(1)
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result := add1(2)
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fmt.Println(result) //3
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add := func(a, b int) int {
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return a + b
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}
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var addCurry function.Fn = func(values ...interface{}) interface{} {
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return add(values[0].(int), values[1].(int))
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}
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add1 := addCurry.Curry(1)
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result := add1(2)
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fmt.Println(result) //3
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}
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```
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### <span id="Compose">Compose</span>
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<p>从右至左组合函数列表fnList, 返回组合后的函数</p>
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@@ -170,6 +169,7 @@ func main() {
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```go
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func Compose(fnList ...func(...interface{}) interface{}) func(...interface{}) interface{}
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```
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<b>例子:</b>
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```go
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@@ -181,22 +181,20 @@ import (
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)
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func main() {
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add1 := func(v ...interface{}) interface{} {
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return v[0].(int) + 1
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}
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add2 := func(v ...interface{}) interface{} {
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return v[0].(int) + 2
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}
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add1 := func(v ...interface{}) interface{} {
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return v[0].(int) + 1
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}
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add2 := func(v ...interface{}) interface{} {
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return v[0].(int) + 2
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}
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add3 := function.Compose(add1, add2)
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result := add3(1)
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add3 := function.Compose(add1, add2)
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result := add3(1)
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fmt.Println(result) //4
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fmt.Println(result) //4
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}
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```
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### <span id="Debounced">Debounced</span>
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<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>
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@@ -206,6 +204,7 @@ func main() {
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```go
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func Debounced(fn func(), duration time.Duration) func()
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```
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<b>例子:</b>
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```go
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@@ -217,28 +216,26 @@ import (
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)
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func main() {
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count := 0
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add := func() {
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count++
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}
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count := 0
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add := func() {
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count++
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}
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debouncedAdd := function.Debounced(add, 50*time.Microsecond)
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function.debouncedAdd()
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function.debouncedAdd()
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function.debouncedAdd()
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function.debouncedAdd()
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debouncedAdd := function.Debounced(add, 50*time.Microsecond)
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function.debouncedAdd()
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function.debouncedAdd()
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function.debouncedAdd()
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function.debouncedAdd()
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time.Sleep(100 * time.Millisecond)
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fmt.Println(count) //1
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time.Sleep(100 * time.Millisecond)
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fmt.Println(count) //1
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function.debouncedAdd()
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time.Sleep(100 * time.Millisecond)
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fmt.Println(count) //2
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function.debouncedAdd()
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time.Sleep(100 * time.Millisecond)
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fmt.Println(count) //2
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}
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```
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### <span id="Delay">Delay</span>
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<p>延迟delay时间后调用函数</p>
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@@ -248,6 +245,7 @@ func main() {
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```go
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func Delay(delay time.Duration, fn interface{}, args ...interface{})
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```
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<b>例子:</b>
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```go
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@@ -259,15 +257,13 @@ import (
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)
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func main() {
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var print = func(s string) {
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fmt.Println(count) //test delay
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}
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function.Delay(2*time.Second, print, "test delay")
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var print = func(s string) {
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fmt.Println(count) //test delay
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}
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function.Delay(2*time.Second, print, "test delay")
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}
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```
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### <span id="Schedule">Schedule</span>
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<p>每次持续时间调用函数,直到关闭返回的 bool chan</p>
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@@ -277,6 +273,7 @@ func main() {
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```go
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func Schedule(d time.Duration, fn interface{}, args ...interface{}) chan bool
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```
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<b>例子:</b>
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```go
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@@ -289,20 +286,18 @@ import (
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func main() {
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var res []string
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appendStr := func(s string) {
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res = append(res, s)
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}
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appendStr := func(s string) {
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res = append(res, s)
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}
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stop := function.Schedule(1*time.Second, appendStr, "*")
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time.Sleep(5 * time.Second)
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close(stop)
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stop := function.Schedule(1*time.Second, appendStr, "*")
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time.Sleep(5 * time.Second)
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close(stop)
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fmt.Println(res) //[* * * * *]
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}
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```
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### <span id="Watcher">Watcher</span>
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<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>
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@@ -311,15 +306,16 @@ func main() {
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```go
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type Watcher struct {
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startTime int64
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stopTime int64
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excuting bool
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startTime int64
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stopTime int64
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excuting bool
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}
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func (w *Watcher) Start() //start the watcher
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func (w *Watcher) Stop() //stop the watcher
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func (w *Watcher) Reset() //reset the watcher
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func (w *Watcher) GetElapsedTime() time.Duration //get the elapsed time of function execution
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```
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<b>例子:</b>
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```go
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@@ -332,33 +328,30 @@ import (
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func main() {
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w := &function.Watcher{}
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w.Start()
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w.Start()
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longRunningTask()
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longRunningTask()
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fmt.Println(w.excuting) //true
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fmt.Println(w.excuting) //true
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w.Stop()
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w.Stop()
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eapsedTime := w.GetElapsedTime().Milliseconds()
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fmt.Println(eapsedTime)
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eapsedTime := w.GetElapsedTime().Milliseconds()
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fmt.Println(eapsedTime)
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w.Reset()
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w.Reset()
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fmt.Println(w.excuting) //false
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fmt.Println(w.excuting) //false
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fmt.Println(w.startTime) //0
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fmt.Println(w.stopTime) //0
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fmt.Println(w.startTime) //0
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fmt.Println(w.stopTime) //0
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}
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func longRunningTask() {
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var slice []int64
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for i := 0; i < 10000000; i++ {
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slice = append(slice, int64(i))
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}
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var slice []int64
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for i := 0; i < 10000000; i++ {
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slice = append(slice, int64(i))
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}
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}
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```
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