feat(core): Add QueryList#forEach

laco0416 · Matias Niemela · commit b634a25ae018 · 2016-02-19T19:23:46.000-05:00
diff --git a/modules/angular2/src/core/linker/query_list.ts b/modules/angular2/src/core/linker/query_list.ts
@@ -51,6 +51,11 @@ export class QueryList<T> {
    */
   reduce<U>(fn: (acc: U, item: T) => U, init: U): U { return this._results.reduce(fn, init); }
 
+  /**
+   * executes function for each element in a query.
+   */
+  forEach(fn: (item: T) => void): void { this._results.forEach(fn); }
+
   /**
    * converts QueryList into an array
    */
diff --git a/modules/angular2/test/core/linker/query_list_spec.ts b/modules/angular2/test/core/linker/query_list_spec.ts
@@ -50,6 +50,13 @@ export function main() {
       expect(queryList.map((x) => x)).toEqual(['one', 'two']);
     });
 
+    it('should support forEach', () => {
+      queryList.reset(['one', 'two']);
+      let join = '';
+      queryList.forEach((x) => join = join + x);
+      expect(join).toEqual('onetwo');
+    });
+
     if (!IS_DART) {
       it('should support filter', () => {
         queryList.reset(['one', 'two']);
