golang学习笔记——定时器

Timer定时器

• 启动

package main

import (

"fmt"

"time"

)

func main() {

<-time.After(2 * time.Second)

fmt.Println("延时两秒")

}

func main02() {

time.Sleep(2 * time.Second)

fmt.Println("延时两秒")

}

func main01() {

//timer 只能执行一次

timer := time.NewTimer(2 * time.Second)

<-timer.C

fmt.Println("延时两秒")

}

• 停止

package main

import (

"fmt"

"time"

)

func main() {

timer := time.NewTimer(3 * time.Second)

go func() {

<-timer.C

fmt.Println("三秒后执行")

}()

//停止定时器

timer.Stop()

for {

}

}

• 重置

package main

import (

"fmt"

"time"

)

func main() {

timer := time.NewTimer(3 * time.Second)

//重置为1秒钟

timer.Reset(time.Second)

go func() {

<-timer.C

fmt.Println("定时执行")

}()

for {

}

}

Ticker定时器（循环执行）

package main

import (

"fmt"

"time"

)

func main() {

ticker := time.NewTicker(time.Second)

i := 0

for {

i++

<-ticker.C

fmt.Println(i)

if i == 5 {

ticker.Stop()

break

}

}

}