From fb17eaf5086b655f88a122a6247eb93aa2a3eee0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?W=C3=A9dney=20Yuri?= <wedneyyuri@gmail.com>
Date: Fri, 17 Oct 2014 22:19:24 -0300
Subject: [PATCH] docs(angular.extend): explanation of deep copy.

It is very common to see many developers confused about it.
---
 src/Angular.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Angular.js b/src/Angular.js
index d81da8a186aa..d75489be147f 100644
--- a/src/Angular.js
+++ b/src/Angular.js
@@ -340,6 +340,7 @@ function setHashKey(obj, h) {
  * Extends the destination object `dst` by copying own enumerable properties from the `src` object(s)
  * to `dst`. You can specify multiple `src` objects. If you want to preserve original objects, you can do so
  * by passing an empty object as the target: `var object = angular.extend({}, object1, object2)`.
+ * Note: Keep in mind that `angular.extend` does not support recursive merge (deep copy).
  *
  * @param {Object} dst Destination object.
  * @param {...Object} src Source object(s).