Add ping pong

channels/channels.go

@@ -40,7 +40,25 @@ func bufferedChannels() {
 	fmt.Println("Done")
 }
 
+func ping(pingc chan<- string, msg string) {
+	pingc <- msg
+}
+
+func pong(pingc <-chan string, pongc chan<- string) {
+	fmt.Println("pong() received message:", <-pingc)
+	pongc <- "pong!"
+}
+
+func pingPong() {
+	header("Channel Directions")
+	pingc, pongc := make(chan string, 1), make(chan string, 1)
+	ping(pingc, "ping!")
+	pong(pingc, pongc)
+	fmt.Println("Received message in pingPong():", <-pongc)
+}
+
 func Channels() {
 	simpleChannels()
 	bufferedChannels()
+	pingPong()
 }