Channels

Channels are typed queues used for goroutines to communicate with each other in a thread-safe manner.

Zero value of a channel is nil.

Channel basics

main.go

	// create unbuffered channel of int values with capacity of 1
	ch := make(chan int)
	// start a new goroutine that sends value 3 over a channel
	go func() { ch <- 3 }()
	// read the value from a channel
	// it waits until goroutine above sends a value
	n := <-ch
	fmt.Printf("n: %d\n", n)

Output:

n: 3

Learn more about channels.

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