timer with select case

concurrent.go

package main

import "time"
import "fmt"

func main() {

	doneChan := make(chan bool)
	go func() {
		time.Sleep(time.Second * 20)
		doneChan <- true
	}()

	for {
		select {
		case <- time.NewTimer(time.Second*10).C:
			fmt.Println("Timer expired")
		case <- time.NewTicker(time.Millisecond * 400).C:
			fmt.Println("Ticker ticked")
		case <- doneChan:
			fmt.Println("Done")
			return
		}
	}
}