git/lancet
1
0
Fork 0
mirror of https://github.com/duke-git/lancet.git synced 2026-02-06 21:52:28 +08:00
Code Issues Projects Releases Wiki Activity

doc: format all markdown doc

Browse Source
This commit is contained in:
dudaodong
2023-02-23 10:36:54 +08:00
parent 15c1537bf0
commit 24eb2bbacd
26 changed files with 3396 additions and 3567 deletions
Download Patch File Download Diff File Expand all files Collapse all files

213
docs/function.md
View File

@@ -1,4 +1,5 @@
# Function
Package function can control the flow of function execution and support part of functional programming.
<div STYLE="page-break-after: always;"></div>
@@ -11,6 +12,7 @@ Package function can control the flow of function execution and support part of
<div STYLE="page-break-after: always;"></div>
## Usage:
```go
import (
"github.com/duke-git/lancet/function"
@@ -20,21 +22,21 @@ import (
<div STYLE="page-break-after: always;"></div>
## Index
- [After](#After)
- [Before](#Before)
- [Curry](#Curry)
- [Compose](#Compose)
- [Debounced](#Debounced)
- [Delay](#Delay)
- [Watcher](#Watcher)
- [After](#After)
- [Before](#Before)
- [Curry](#Curry)
- [Compose](#Compose)
- [Debounced](#Debounced)
- [Delay](#Delay)
- [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>
@@ -42,6 +44,7 @@ import (
```go
func After(n int, fn interface{}) func(args ...interface{}) []reflect.Value
```
<b>Example:</b>
```go
@@ -53,33 +56,31 @@ import (
)
func main() {
arr := []string{"a", "b"}
f := function.After(len(arr), func(i int) int {
fmt.Println("last print")
return i
})
arr := []string{"a", "b"}
f := function.After(len(arr), func(i int) int {
fmt.Println("last print")
return i
})
type cb func(args ...interface{}) []reflect.Value
print := func(i int, s string, fn cb) {
fmt.Printf("arr[%d] is %s \n", i, s)
fn(i)
}
type cb func(args ...interface{}) []reflect.Value
print := func(i int, s string, fn cb) {
fmt.Printf("arr[%d] is %s \n", i, s)
fn(i)
}
fmt.Println("arr is", arr)
for i := 0; i < len(arr); i++ {
print(i, arr[i], f)
}
fmt.Println("arr is", arr)
for i := 0; i < len(arr); i++ {
print(i, arr[i], f)
}
//output:
// arr is [a b]
// arr[0] is a
// arr[1] is b
// arr[0] is a
// arr[1] is b
// last print
}
```
### <span id="Before">Before</span>
<p>creates a function that invokes func once it's called less than n times.</p>
@@ -89,6 +90,7 @@ func main() {
```go
func Before(n int, fn interface{}) func(args ...interface{}) []reflect.Value
```
<b>Example:</b>
```go
@@ -103,29 +105,27 @@ import (
func main() {
assert := internal.NewAssert(t, "TestBefore")
arr := []string{"a", "b", "c", "d", "e"}
f := function.Before(3, func(i int) int {
return i
})
arr := []string{"a", "b", "c", "d", "e"}
f := function.Before(3, func(i int) int {
return i
})
var res []int64
type cb func(args ...interface{}) []reflect.Value
appendStr := func(i int, s string, fn cb) {
v := fn(i)
res = append(res, v[0].Int())
}
var res []int64
type cb func(args ...interface{}) []reflect.Value
appendStr := func(i int, s string, fn cb) {
v := fn(i)
res = append(res, v[0].Int())
}
for i := 0; i < len(arr); i++ {
appendStr(i, arr[i], f)
}
for i := 0; i < len(arr); i++ {
appendStr(i, arr[i], f)
}
expected := []int64{0, 1, 2, 2, 2}
assert.Equal(expected, res)
expected := []int64{0, 1, 2, 2, 2}
assert.Equal(expected, res)
}
```
### <span id="Curry">Curry</span>
<p>Make a curry function.</p>
@@ -136,6 +136,7 @@ func main() {
type Fn func(...interface{}) interface{}
func (f Fn) Curry(i interface{}) func(...interface{}) interface{}
```
<b>Example:</b>
```go
@@ -148,19 +149,17 @@ import (
func main() {
add := func(a, b int) int {
return a + b
}
var addCurry function.Fn = func(values ...interface{}) interface{} {
return add(values[0].(int), values[1].(int))
}
add1 := addCurry.Curry(1)
result := add1(2)
return a + b
}
var addCurry function.Fn = func(values ...interface{}) interface{} {
return add(values[0].(int), values[1].(int))
}
add1 := addCurry.Curry(1)
result := add1(2)
fmt.Println(result) //3
}
```
### <span id="Compose">Compose</span>
<p>Compose the function list from right to left, then return the composed function.</p>
@@ -170,6 +169,7 @@ func main() {
```go
func Compose(fnList ...func(...interface{}) interface{}) func(...interface{}) interface{}
```
<b>Example:</b>
```go
@@ -182,21 +182,19 @@ import (
func main() {
add1 := func(v ...interface{}) interface{} {
return v[0].(int) + 1
}
return v[0].(int) + 1
}
add2 := func(v ...interface{}) interface{} {
return v[0].(int) + 2
}
return v[0].(int) + 2
}
add3 := function.Compose(add1, add2)
result := add3(1)
result := add3(1)
fmt.Println(result) //4
}
```
### <span id="Debounced">Debounced</span>
<p>Creates a debounced function that delays invoking fn until after wait duration have elapsed since the last time the debounced function was invoked.</p>
@@ -206,6 +204,7 @@ func main() {
```go
func Debounced(fn func(), duration time.Duration) func()
```
<b>Example:</b>
```go
@@ -218,27 +217,25 @@ import (
func main() {
count := 0
add := func() {
count++
}
add := func() {
count++
}
debouncedAdd := function.Debounced(add, 50*time.Microsecond)
function.debouncedAdd()
function.debouncedAdd()
function.debouncedAdd()
function.debouncedAdd()
debouncedAdd := function.Debounced(add, 50*time.Microsecond)
function.debouncedAdd()
function.debouncedAdd()
function.debouncedAdd()
function.debouncedAdd()
time.Sleep(100 * time.Millisecond)
fmt.Println(count) //1
time.Sleep(100 * time.Millisecond)
fmt.Println(count) //1
function.debouncedAdd()
time.Sleep(100 * time.Millisecond)
fmt.Println(count) //2
function.debouncedAdd()
time.Sleep(100 * time.Millisecond)
fmt.Println(count) //2
}
```
### <span id="Delay">Delay</span>
<p>Invoke function after delayed time.</p>
@@ -248,6 +245,7 @@ func main() {
```go
func Delay(delay time.Duration, fn interface{}, args ...interface{})
```
<b>Example:</b>
```go
@@ -259,15 +257,13 @@ import (
)
func main() {
var print = func(s string) {
fmt.Println(count) //test delay
}
function.Delay(2*time.Second, print, "test delay")
var print = func(s string) {
fmt.Println(count) //test delay
}
function.Delay(2*time.Second, print, "test delay")
}
```
### <span id="Schedule">Schedule</span>
<p>Invoke function every duration time, until close the returned bool chan.</p>
@@ -277,6 +273,7 @@ func main() {
```go
func Schedule(d time.Duration, fn interface{}, args ...interface{}) chan bool
```
<b>Example:</b>
```go
@@ -289,20 +286,18 @@ import (
func main() {
var res []string
appendStr := func(s string) {
res = append(res, s)
}
appendStr := func(s string) {
res = append(res, s)
}
stop := function.Schedule(1*time.Second, appendStr, "*")
time.Sleep(5 * time.Second)
close(stop)
stop := function.Schedule(1*time.Second, appendStr, "*")
time.Sleep(5 * time.Second)
close(stop)
fmt.Println(res) //[* * * * *]
fmt.Println(res) //[* * * * *]
}
```
### <span id="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>
@@ -311,15 +306,16 @@ func main() {
```go
type Watcher struct {
startTime int64
stopTime int64
excuting bool
startTime int64
stopTime int64
excuting bool
}
func (w *Watcher) Start() //start the watcher
func (w *Watcher) Stop() //stop the watcher
func (w *Watcher) Reset() //reset the watcher
func (w *Watcher) GetElapsedTime() time.Duration //get the elapsed time of function execution
```
<b>Example:</b>
```go
@@ -332,33 +328,30 @@ import (
func main() {
w := &function.Watcher{}
w.Start()
w.Start()
longRunningTask()
longRunningTask()
fmt.Println(w.excuting) //true
fmt.Println(w.excuting) //true
w.Stop()
w.Stop()
eapsedTime := w.GetElapsedTime().Milliseconds()
fmt.Println(eapsedTime)
eapsedTime := w.GetElapsedTime().Milliseconds()
fmt.Println(eapsedTime)
w.Reset()
w.Reset()
fmt.Println(w.excuting) //false
fmt.Println(w.excuting) //false
fmt.Println(w.startTime) //0
fmt.Println(w.stopTime) //0
fmt.Println(w.startTime) //0
fmt.Println(w.stopTime) //0
}
func longRunningTask() {
var slice []int64
for i := 0; i < 10000000; i++ {
slice = append(slice, int64(i))
}
var slice []int64
for i := 0; i < 10000000; i++ {
slice = append(slice, int64(i))
}
}
```