Merge #832 'filter-simpl'

* filter-simpl:
  Avoid unnecessary loop in filter

1 files changed, 2 insertions, 5 deletions

diff --git a/lib/async.js b/lib/async.js
index 4da10a2..30c5c83 100644
--- a/lib/async.js
+++ b/lib/async.js
@@ -410,13 +410,10 @@
 
     function _filter(eachfn, arr, iterator, callback) {
         var results = [];
-        arr = _map(arr, function (x, i) {
-            return {index: i, value: x};
-        });
         eachfn(arr, function (x, index, callback) {
-            iterator(x.value, function (v) {
+            iterator(x, function (v) {
                 if (v) {
-                    results.push(x);
+                    results.push({index: index, value: x});
                 }
                 callback();
             });