Actionscript 3 清洁阵列集合

最初，我在flex模块中声明了十个ArrayCollection，我认为这会导致内存泄漏。所以我将它们分离在一个类中，我将使用我在其中创建的“destroy”方法清理它们。这样行吗

对不起，我讨厌这个题目。但我不会把它写成“引诱垃圾收集者”

---

如果对象没有附加侦听器，那么它应该执行null操作

cfds = null;

我从未在类本身上使用过[Bindable]，因此不确定您在那里尝试做什么

  package{
    public final class Cfd{
        private static var instance;

        private var _cfds:ArrayCollection = new ArrayCollection();

        public function Cfd(singletonEnforcer:MySingletonEnforcer){
            if (instance) { throw new Error('Cannot create a new instance.  Must use Cfd.getInstance().') }
        }

        public static function getInstance():Cfd{
          if (instance == null)
            instance = new MySingleton(new MySingletonEnforcer());
          return instance;
        }

        // don't see a real need for setter/getters here 
        public static function get cfds():ArrayCollection{
            return _cfds;
        }
        public static function set cfds(value:ArrayCollection):void{
            _cfds = value;
        }

        // I wouldn't even use a destroy on this class since it is a singleton.
        // just set the data to null Cfd.cfds = null
        public static function destroy():void{
            _cfds = null
        }
    }
  }

  //this is in Cfd.as but is outside the package block
  class MySingletonEnforcer {}

---

每当您使用这样的单例时，您几乎可以保证内存泄漏，因为您可能正在到处收听ArrayCollection（可能还有其中的项）。当通过getter/setter对显式提供对对象的引用时，可以在setter中添加侦听器，并在重置值时将其移除

查看更多正在发生的事情

---

有关为什么应该避免单例的详细信息，请参见类级别的

[Bindable]

使类的所有公共属性都可绑定。在这种特殊情况下，它与将它放在

cfds

属性上完全相同，因为类中只有一个公共属性。我必须将它给你，以警告我有关单身的问题。非常感谢。

  package{
    public final class Cfd{
        private static var instance;

        private var _cfds:ArrayCollection = new ArrayCollection();

        public function Cfd(singletonEnforcer:MySingletonEnforcer){
            if (instance) { throw new Error('Cannot create a new instance.  Must use Cfd.getInstance().') }
        }

        public static function getInstance():Cfd{
          if (instance == null)
            instance = new MySingleton(new MySingletonEnforcer());
          return instance;
        }

        // don't see a real need for setter/getters here 
        public static function get cfds():ArrayCollection{
            return _cfds;
        }
        public static function set cfds(value:ArrayCollection):void{
            _cfds = value;
        }

        // I wouldn't even use a destroy on this class since it is a singleton.
        // just set the data to null Cfd.cfds = null
        public static function destroy():void{
            _cfds = null
        }
    }
  }

  //this is in Cfd.as but is outside the package block
  class MySingletonEnforcer {}