[GO]ticker的使用

package main

import (
    "time"
    "fmt"
)

//ticker是一个定时触发的计时器，它会以一个间隔往channel发送整一个事件（当时时间），而channel的接收者可以以固定的时间间隔从channel中读取事件

func main() {
    ticker := time.NewTicker(time.Second)
    i := 0
    for true {
        time := <-ticker.C
        i++
        fmt.Printf("i = %d, time = %v
", i, time)
        if i==5 {
            ticker.Stop()
            break
        }
    }
}

执行的结果为

i = 1, time = 2018-09-20 09:22:38.9705836 +0800 CST m=+1.001708201
i = 2, time = 2018-09-20 09:22:39.9702884 +0800 CST m=+2.001413001
i = 3, time = 2018-09-20 09:22:40.9699923 +0800 CST m=+3.001116901
i = 4, time = 2018-09-20 09:22:41.970699 +0800 CST m=+4.001823601
i = 5, time = 2018-09-20 09:22:42.9704029 +0800 CST m=+5.001527501