actionscript 3 - How can I pass all parameters (one by one) in an object to a constructor in AS3? -

this hard question do, i'll try explain. have class , parameters of contructor object. need function returns instance of class, passing parameters constructor.

this code:
random , unmodifiable class:

public foo {     public function foo(a:int, b:string) {         // constructor     } } 

and function (in class):

function bar(params:object):* {       var baz:foo = new foo(params.a, params.b);     return baz; } 

what need make function generic, without pass params parameter foo constructor because can't modify it. like:

function bar2(clazz:class, params:object):* {     var baz:* = new clazz(/*some magic way transform params in comma separated parameters*/);     return baz; } 

anyone can me?
lot.

this called parameterized factory. first thought function.apply, doesn't apply constructors (he-he). so, people making factories this:

function create(what:class, args:array):* {     switch (args.length) {         case 0: return new what();         case 1: return new what(args[0]);         case 2: return new what(args[0], args[1]);         ...         //profit!     }     throw new error("need moar cases!"); }