// +build ignore,OMIT package main import ( "errors" "fmt" "time" ) // START OMIT func doConcurrently(job string, err chan error) { go func() { fmt.Println("doing job", job) time.Sleep(1 * time.Second) err <- errors.New("something went wrong!") }() } func main() { jobs := []string{"one", "two", "three"} errc := make(chan error) for _, job := range jobs { doConcurrently(job, errc) } for _ = range jobs { if err := <-errc; err != nil { fmt.Println(err) } } } // END OMIT