From 1650ef68ef7570b10992f280975150e579dc7830 Mon Sep 17 00:00:00 2001
From: Pauli <wuliupo@163.com>
Date: Tue, 19 Jul 2016 13:08:21 +0800
Subject: [PATCH] remove unused

---
 src/sortable.js | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/src/sortable.js b/src/sortable.js
index 19f3770..7c799d1 100644
--- a/src/sortable.js
+++ b/src/sortable.js
@@ -23,8 +23,8 @@ angular.module('ui.sortable', [])
           var savedNodes;
 
           function combineCallbacks(first, second){
-            var firstIsFunc = first && (typeof first === 'function');
-            var secondIsFunc = second && (typeof second === 'function');
+            var firstIsFunc = typeof first === 'function';
+            var secondIsFunc = typeof second === 'function';
             if(firstIsFunc && secondIsFunc) {
               return function() {
                 first.apply(this, arguments);
@@ -62,12 +62,8 @@ angular.module('ui.sortable', [])
             }
 
             // patch the options that need to have values set
-            if (!value) {
-              if (key === 'items') {
-                value = uiSortableConfig.items;
-              } else if (key === 'ui-model-items') {
-                value = uiSortableConfig.items;
-              }
+            if (!value && (key === 'items' || key === 'ui-model-items')) {
+              value = uiSortableConfig.items;
             }
 
             return value;