actionscript - AS3 default values as Class in Function Parameter -

how can assign default value function parameter of type class in action script 3

    public function foo(param:class = ????? )     {      } 

thanks

you can't, here's workaround achieve same effect:

public function foo(param:class = null ):void {     if(!param)      {         // this'll default class         param = myclass;     }     //  here can do: var bar:* = new param(); }