From: Phlip <phlip2005@...>
Date: 2009-04-21T01:25:04+09:00
Subject: Re: Polymorphism

Michael Satterwhite wrote:

> As much as I like Ruby, I do miss the polymorphic behavior of routines
> in Java and C++. There are frequently times in which it would be useful
> to have constructors (or routines) that take different arguments. I do
> see some constructors that may take arguments of different types, so I
> know people are doing it, but I'm curious as to how.

That's "overloading", not "polymorphism".

You do that in Ruby like this:

   def zone(*args)
     args.each do |arg|
       case arg
         when String
           string_zone(arg)
         when Fixnum
           fixnum_zone(arg)
         when MechaBattle
           mecha_battle_zone(arg)
       end
     end
   end

 From here, learn what real polymorphism is! You prob'ly already use it...

-- 
   Phlip