Go by Example: Channels

Channels are the pipes that connect concurrent goroutines. You can send values into channels from one goroutine and receive those values into another goroutine. Channels are a powerful primitive that underly much of Go’s functionality.
	package main
	import "fmt"
	func main() {
Create a new channel with `make(chan val-type)`. Channels are typed by the values they convey.	messages := make(chan string)
Send a value into a channel using the `channel <-` syntax. Here we send `"ping"` to the `messages` channel we made above, from a new goroutine.	go func() { messages <- "ping" }()
The `<-channel` syntax receives a value from the channel. Here we’ll receive the `"ping"` message we sent above and print it out.	msg := <-messages fmt.Println(msg) }

When we run the program the `"ping"` message is succesfully passed from one goroutine to another via our channel.	$ go run channels.go ping
By default sends and receives block until both the sender and receiver are ready. This property allowed us to wait at the end of our program for the `"ping"` message without having to use any other synchronization.