select.go

package main

import (
	"fmt"
  	"time"
)

func addMsg(ch chan string, msg string){ 
  time.Sleep(10 * time.Second)
  ch <- msg
}

func main() {
  msgs := make(chan string)
  go addMsg(msgs, "Abdulrahman")
  
  select {
    case msg := <- msgs :
      fmt.Println("Recieved", msg)  
    case <- time.After(3 * time.Second):
      fmt.Println("Timeout")
    }
}