Channels

Context

Channels are typed conduits that allow goroutines to communicate and synchronize. You send a value into a channel using ch <- v and receive a value using v := <-ch. By default, channels are unbuffered: sends block until a receiver is ready, and vice versa.

Example

Create a channel and pass a value between two goroutines.

Code example

package main

import "fmt"

func main() {
    ch := make(chan string)

    go func() {
        ch <- "ping"
    }()

    msg := <-ch
    fmt.Println(msg)
}

Output

ping

Useful links

• Go spec: Channel types
• Go by Example: Channels