From 3897250894fd6f8508e5bf4ffba2e22da9251998 Mon Sep 17 00:00:00 2001
From: Robin Chesterman <robin.chesterman@justis.com>
Date: Tue, 3 May 2016 20:57:35 +0100
Subject: [PATCH] change to backbone splice

---
 backbone.js | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/backbone.js b/backbone.js
index 640b7ea5d..7366e2fe5 100644
--- a/backbone.js
+++ b/backbone.js
@@ -770,12 +770,8 @@
   // Splices `insert` into `array` at index `at`.
   var splice = function(array, insert, at) {
     at = Math.min(Math.max(at, 0), array.length);
-    var tail = Array(array.length - at);
-    var length = insert.length;
-    var i;
-    for (i = 0; i < tail.length; i++) tail[i] = array[i + at];
-    for (i = 0; i < length; i++) array[i + at] = insert[i];
-    for (i = 0; i < tail.length; i++) array[i + length + at] = tail[i];
+    var args = [at, 0].concat(insert);
+    Array.prototype.splice.apply(array, args);
   };
 
   // Define the Collection's inheritable methods.