ta_shuo

Go by Example - Tickers

翻译自 https://gobyexample.com/

Go by Example

Go is an open source programming language designed for building simple, fast, and reliable software.

Go by Example is a hands-on introduction to Go using annotated example programs. Check out the first example or browse the full list below.

Go by Example: Tickers

Timer是当你想要在未来某个时间只执行一次某个事件时使用,而ticker可以用来以一定时间间隔重复执行一个事件。

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package main
import "time"
import "fmt"
func main() {
// Ticker跟Timer是类似的机制:使用管道来通信
// 下面示例中我们使用内置的for-range语句对于每500毫秒接收到一个的值进行迭代处理
ticker := time.NewTicker(time.Millisecond * 500)
go func() {
for t := range ticker.C {
fmt.Println("Tick at", t)
}
}()
// 跟Timer一样,Ticker也可以被停止
// 当Ticker取消时,其相应的管道不会再接收到值
// 该示例中我们在1600毫秒后停止
time.Sleep(time.Millisecond * 1600)
ticker.Stop()
fmt.Println("Ticker stoped")
}
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tashuo:golang ta_shuo$ go run ticker.go
Tick at 2017-09-06 11:47:35.512980179 +0800 CST
Tick at 2017-09-06 11:47:36.012186259 +0800 CST
Tick at 2017-09-06 11:47:36.515210336 +0800 CST
Ticker stoped

在执行1600毫秒被停止时Ticker 500毫秒的间隔应该已经重复执行了三次

原文链接:Go by Example: Tickers