From b76e9ba0bc00b46896d19276e9ab0015b06e97db Mon Sep 17 00:00:00 2001
From: Robert Mennell <skatcat31@gmail.com>
Date: Fri, 22 Dec 2017 18:51:43 -0800
Subject: [PATCH] [UPDATE] Flatten updated to use ES6 spread

---
 snippets/flatten.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/snippets/flatten.md b/snippets/flatten.md
index 69a492572..deca1d752 100644
--- a/snippets/flatten.md
+++ b/snippets/flatten.md
@@ -2,9 +2,9 @@
 
 Flattens an array.
 
-Use `Array.reduce()` to get all elements inside the array and `concat()` to flatten them.
+Using a new array we concatinate it with the spread input array causing a shallow flatten
 
 ```js
-const flatten = arr => arr.reduce((a, v) => a.concat(v), []);
+const flatten = arr => [ ].concat( ...arr );
 // flatten([1,[2],3,4]) -> [1,2,3,4]
 ```