go语言定时器

package main

import "fmt"
import "time"

func main() {
        t := time.NewTimer(2 * time.Second)
        //v := <- t.C 
        //fmt.Println(v)
        go onTime(t.C)
        fmt.Println("main thread")
        time.Sleep(10 * time.Second)

}

func onTime(c <-chan time.Time) {
        for now := range c { 
                // now := <- c
                fmt.Println("onTime", now)
        }   
}

package main

import "fmt"
import "time"

func main() {
	time.AfterFunc(5 * time.Second, f1)
	time.AfterFunc(2 * time.Second, f2)
	fmt.Println("main thread")
	time.Sleep(10 * time.Second)
}


func f1() {
	fmt.Println("f1 done !")
}

func f2() {
	fmt.Println("f2 done !")
}

package main

import "fmt"
import "time"

var count int = 0

func main() {
	t := time.Tick(2 * time.Second)

	i := 0
	for now := range t {
		fmt.Println(now, doSomething())
		i++
		if i > 10 {
			break
		}
	}
}

func doSomething() int {
	count++
	return count
}