From 86498ad99011b0eb812b569e804e285803a0dcdf Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Wed, 26 Nov 2014 10:46:10 +1100
Subject: [PATCH] fix memoisation operator example

---
 doc/playground.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/playground.md b/doc/playground.md
index ccc5270db0..2ee2ee9db4 100644
--- a/doc/playground.md
+++ b/doc/playground.md
@@ -44,7 +44,7 @@ equivalent to:
 
 ```javascript
 var obj = {};
-if (Object.prototype.hasOwnProperty.call(obj, "x")) obj.x = 2;
+if (!Object.prototype.hasOwnProperty.call(obj, "x")) obj.x = 2;
 ```
 
 ### Method binding expression