remove item

kemsky · Nov 9, 2015 · ab0490e · ab0490e
1 parent 6cbbed3
commit ab0490e
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Showing 4 changed files with 45 additions and 3 deletions.
diff --git a/source/com/kemsky/Stream.as b/source/com/kemsky/Stream.as
@@ -449,6 +449,23 @@ package com.kemsky
             }
         }
 
+        /**
+         * Removes item at specified position.
+         * @param index An integer that specifies the position in the list.
+         * @example
+         * <pre>
+         *     var s:Stream = $(1, 2, 3);
+         *     s.removeItem(0);
+         *     trace(s);
+         *     //Stream{2, 3}
+         * </pre>
+         * @internal mutable
+         */
+        public function removeItem(index:int):void
+        {
+            delete this[index];
+        }
+
         /**
          * Executes a test function on each item and calculates number of successful tests.
          * @param callback The function to run on each item in the list.
@@ -1957,7 +1974,7 @@ package com.kemsky
             {
             }
 
-            if(!(index <= 0) && !(index > 0))
+            if(index != index)
             {
                 return false;
             }

diff --git a/source/com/kemsky/filters/exists.as → source/com/kemsky/filters/existing.as b/source/com/kemsky/filters/exists.as → source/com/kemsky/filters/existing.as
@@ -2,8 +2,7 @@ package com.kemsky.filters
 {
     import com.kemsky.support.toValue;
 
-    //todo test
-    public function exists(val:*):Function
+    public function existing(val:*):Function
     {
         return function (item:*):Boolean
         {

diff --git a/testSrc/com/kemsky/TestStream.as b/testSrc/com/kemsky/TestStream.as
@@ -277,6 +277,17 @@ package com.kemsky
             assertTrue(s.getItem(3) === undefined);
         }
 
+
+        [Test]
+        public function testRemove():void
+        {
+            var s:Stream = $(1, 2, 3);
+            s.removeItem(0);
+            assertEquals(s.length, 2);
+            assertEquals(s[0], 2);
+            assertEquals(s[1], 3);
+        }
+
         [Test]
         public function testGroup():void
         {

diff --git a/testSrc/com/kemsky/filters/TestFilters.as b/testSrc/com/kemsky/filters/TestFilters.as
@@ -16,6 +16,21 @@ package com.kemsky.filters
         }
 
 
+        [Test]
+        public function testExisting():void
+        {
+            var s:Stream = $();
+            s[0] = 0;
+            s[3] = null;
+            s[6] = NaN;
+            s[10] = "";
+
+            var r:Stream = s.filter(existing(_));
+            assertEquals(r.length, 2);
+            assertEquals(r.first, 0);
+            assertEquals(r.second, "");
+        }
+
         [Test]
         public function testUnderscore():void
         {