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1 snippets
  • How Select on Channel Works in Golang

    package main
    import (
    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.