package main
import (
"fmt"
"time"
)
func main() {
// in this example we will choose between two channels
c1 := make(chan string)
c2 := make(chan string)
go func() {
time.Sleep(1 * time.Second)
c1 <- "one"
}()
// each channel will receive a value after some time
go func() {
time.Sleep(2 * time.Second)
c2 <- "two"
}()
// use select statement to wait for both values at the same time,
// printing each one as it arrives
for i := 0; i < 2; i++ {
select {
case msg1 := <-c1:
fmt.Println("received", msg1)
case msg2 := <-c2:
fmt.Println("received", msg2)
}
}
}
Select statement allows you to wait for multiple operations on a channel.