Go Golang - channel select example

Go Golang - channel select example

package main

import (
	"fmt"
	"time"
)

func main() {
	c1 := make(chan string, 1)
	c2 := make(chan string, 1)
	
	go func() {
		for {
			c1 <- "from 1"
			time.Sleep(time.Second *2)
		}
	} ()
	go func() {
		for {
			c2 <- "from 2"
			time.Sleep(time.Second * 3)
		}
	} ()
	go func() {
		for {
			select {
			case msg1 := <- c1:
				fmt.Println("Message 1", msg1)
			case msg2 := <- c2:
				fmt.Println("Message 2", msg2)
			case <- time.After(time.Second):
				fmt.Println("timeout")
			}
		}
	} ()
 
	var input string
	fmt.Scanln(&input)
}