Channels

Channels are the pipes that connect concurrent goroutines. Values can be sent into channels from one goroutine and receive those values into another goroutine.

Create a new channel with channelName := make(chan val-type). Channels are typed by the values they convey.

Send a value into a channel using the channel channelName <- data

By default sends and receives block until both the sender and the receiver are ready. This property allows us to wait at the end of our program for the "ping" message without having to use any other synchronization