矢量和每个 vs 阵列和
使用 Vector.<T>
类型和 for each
循环比传统阵列和 for
循环更高效:
好:
var list:Vector.<Sprite> = new <Sprite>[];
for each(var sprite:Sprite in list) {
sprite.x += 1;
}
坏:
var list:Array = [];
for (var i:int = 0; i < list.length; i++) {
var sprite:Sprite = list[i];
sprite.x += 1;
}