package { import flash.display.Sprite; import flash.utils.getTimer; import flash.text.TextField; import flash.text.TextFieldAutoSize; import flash.text.TextFormat; import flash.text.TextFormatAlign; [SWF(width = "240",height = "180")] public class ArrayConcatenation extends Sprite { private const COUNT_TRIAL:uint = 10000; private const COUNT_SOURCE:uint = 300; private const COUNT_ADDITION:uint = 300; private var addition_array:Array = createArray(COUNT_ADDITION); private var started:uint; private var my_txt:TextField = new TextField(); private var label_txt:TextField = new TextField(); private var my_fmt:TextFormat = new TextFormat(); public function ArrayConcatenation() { // Creating a TextField for display createTextField(); // Starting test apply_push(); use_concat(); apply_push(); use_concat(); apply_push(); use_concat(); apply_push(); use_concat(); } private function apply_push():void { var nLength:uint = COUNT_TRIAL; var _array:Array = getArrays(COUNT_TRIAL); started = getTimer(); for (var i:uint = 0; i < nLength; i++) { var my_array:Array = _array[i]; my_array.push.apply(my_array, addition_array); } xTrace(getTimer() - started); } private function use_concat():void { var nLength:uint = COUNT_TRIAL; var _array:Array = getArrays(COUNT_TRIAL); started = getTimer(); for (var i:uint = 0; i < nLength; i++) { var my_array:Array = _array[i]; my_array = my_array.concat(addition_array); } xTrace(getTimer() - started); } private function getArrays(n:uint):Array { var _array:Array = []; for (var i:uint = 0; i < n; i++) { _array[i] = createArray(COUNT_SOURCE); } return _array; } private function createArray(n:uint):Array { var _array:Array = []; for (var i:uint = 0; i < n; i++) { _array[i] = i; } return _array; } private function createTextField():void { addChild(my_txt); addChild(label_txt); my_txt.x += 30; my_txt.autoSize = TextFieldAutoSize.RIGHT; my_fmt.align = TextFormatAlign.RIGHT; my_txt.defaultTextFormat = my_fmt; label_txt.autoSize = TextFieldAutoSize.LEFT; label_txt.text = ""; label_txt.appendText("apply() and push():\n"); label_txt.appendText("concat():\n"); label_txt.appendText("apply() and push():\n"); label_txt.appendText("concat():\n"); label_txt.appendText("apply() and push():\n"); label_txt.appendText("concat():\n"); label_txt.appendText("apply() and push():\n"); label_txt.appendText("concat():\n"); } private function xTrace(n:int):void { my_txt.appendText(String(n) + "\n"); } } }