package main import ( "fmt" "time" ) func main() { c1 := make(chan int, 1) c2 := make(chan int, 1) c1 <- 42 select { case v := <-c1: fmt.Println("received from c1: ", v) case c2 <- 1: fmt.Println("sent to c2") case <-time.After(time.Second): fmt.Println("timed out") default: fmt.Println("nothing ready at the moment") } }