From 1d6b444d01762f90b18e455dbff84be3fded7288 Mon Sep 17 00:00:00 2001
From: Jian Han <jian.han@neds.com>
Date: Wed, 13 Dec 2017 22:46:39 +1000
Subject: [PATCH] added ping pong example

---
 concurrency/pingpong/main.go | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 concurrency/pingpong/main.go

diff --git a/concurrency/pingpong/main.go b/concurrency/pingpong/main.go
new file mode 100644
index 0000000..54eaece
--- /dev/null
+++ b/concurrency/pingpong/main.go
@@ -0,0 +1,27 @@
+package main
+
+import (
+	"fmt"
+	"time"
+)
+
+type Ball struct{ hits int }
+
+func main() {
+	table := make(chan *Ball)
+	go player("ping", table)
+	go player("pong", table)
+	table <- new(Ball) // game on; toss the ball
+	time.Sleep(1 * time.Second)
+	<-table // game over; grab the ball
+}
+
+func player(name string, table chan *Ball) {
+	for {
+		ball := <-table
+		ball.hits++
+		fmt.Println(name, ball.hits)
+		time.Sleep(100 * time.Millisecond)
+		table <- ball
+	}
+}