Question

I have an AS class with setter and getter functions. I need to tweak one of this class’s instances so that it’s setter function will process the input before assigning it to the local variable.

or, in a more elaborated way, what should I use instead of $$$ in the example below?

class MyClass{     private var _legend:Array;     function set legend(legend:Array):void{         _legend= legend;     }     function get legend():Array{         return _legend;     }     function someFunction():void{         foo();     } } var mc:MyClass = new MyClass(); mc.someFunction = function():void{     bar(); } mc.$$$ = new function(legend:Array):void{     _legend = process(legend); } 

Answer 1

Normally you would subclass MyClass to modify the behavior (polymorphism) of MyClass.

class MySubClass extends MyClass {         function set legend(legend:Array):void{                 // do your checking here. Then call the                  // setter in the super class.                  super.legend = legend;         } }