代码演示
package main import "fmt" import "time" func main() { ticker := time.NewTicker(time.Millisecond * 500) go func() { for t := range ticker.C { fmt.Println("Tick at", t) } }() time.Sleep(time.Millisecond * 1600) ticker.Stop() fmt.Println("Ticker stopped") }
代码运行结果
Tick at 2018-04-16 20:53:13.688248777 +0800 CST m=+0.501345999 Tick at 2018-04-16 20:53:14.189464453 +0800 CST m=+1.002554873 Tick at 2018-04-16 20:53:14.690658258 +0800 CST m=+1.503741877 Ticker stopped
代码解读
- 打点器是为固定时间内重复执行某件事准备的,直到关闭为止
- 打点器也是用通道来发送数据,可以用range来迭代每隔500ms发送一次的值
- 一旦一个打点器停止了,将不能再从它的通道中获取值