golang time

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package main

import (
	"fmt"
	"time"
)

func main() {
	futureTimer := time.NewTicker(5 * time.Second)
	defer futureTimer.Stop()

	for {
		select {
		case <-futureTimer.C:
			fmt.Println("Hello!")
		}
	}
}

运行结果： 每个5秒打印一次

Hello!
Hello!
Hello!
......