actionscript 3 - How do I return different type from overridden method? -

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i'm extending as3 class rectangle class called bin. want override rectangle clone() method method returns bin object, not rectangle object. if try override clone method specify bin return type, #1023: incompatible override error. here's bin class:

package {      import flash.geom.rectangle;      public class bin extends rectangle {          public function bin(x:number = 0, y:number = 0, width:number = 0, height:number = 0) {             super(x, y, width, height);         }          override public function clone():rectangle {             return new bin(x, y, width, height);         }      }  }

this class works, when use clone() method create new bin instance, type errors when try use bin methods on new instance.

how override clone() , send actual bin instance?

technically, can't change signature when override method. in case, though, not huge problem. have cast resulting object type bin after calling clone method.


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