// +build ignore,OMIT package main import ( "fmt" "time" ) func sleepAndTalk(t time.Duration, msg string) { time.Sleep(t) fmt.Printf("%v ", msg) } func main() { go sleepAndTalk(0*time.Second, "Hello") go sleepAndTalk(1*time.Second, "Gophers!") go sleepAndTalk(2*time.Second, "What's") go sleepAndTalk(3*time.Second, "up?") }