Support _.flip as a method combinator.

documentcloud · Apr 12, 2014 · 8cd7f42 · 8cd7f42
1 parent 648488b
commit 8cd7f42
Show file tree

Hide file tree

Showing 2 changed files with 10 additions and 1 deletion.
diff --git a/test/function.combinators.js b/test/function.combinators.js
@@ -157,6 +157,15 @@ $(document).ready(function() {
     var echo = function() { return Array.prototype.slice.call(arguments, 0); };
 
     deepEqual(_.flip(echo)(1, 2, 3, 4), [4, 3, 2, 1], 'should return a function that flips the first three or more args to a function');
+
+    var obj = {
+      num: 5,
+      addToNum: function (a, b) { return [a + this.num, b + this.num]; }
+    };
+
+    obj.reversedAddToNum = _.flip(obj.addToNum);
+
+    deepEqual(obj.reversedAddToNum(1, 2), [7, 6], 'should function as a method combinator.');
   });
 
   test("fnull", function() {

diff --git a/underscore.function.combinators.js b/underscore.function.combinators.js
@@ -221,7 +221,7 @@
       return function(/* args */) {
         var reversed = __reverse.call(arguments);
 
-        return fun.apply(null, reversed);
+        return fun.apply(this, reversed);
       };
     },