From: J J <jj5412@...>
Date: 2001-05-08T23:41:25+09:00
Subject: [ruby-talk:14868] Re: Polymorphic methods

If anyone is interested, I've written a mixin that will give you
pseudo-overloaded methods, such that:
  setN(3)
  setN('4')
will call
  setNFixnum(3)
  setNString('4')
respectively. Currently supports up to 3 arguments, but is easily extended.

It's available at: http://www.johnjohnsonsoftware.com/ruby

Regards,
   JJ

--
Be Kind, Be Careful, Be Yourself
--
Solid, reliable software at reasonable prices
http://www.johnjohnsonsoftware.com


"J J" <jj5412@earthlink.net> wrote in message
news:TbBJ6.31$Qx.5847@newsread1.prod.itd.earthlink.net...
> In C++ you can have polymorphic methods such as
>
> doIt( String s ) {
> ...
> }
>
> doIt( Integer i ) {
> ...
> }
>
> Is there a way to duplicate this behavior without resorting to:
>
> def doIt( object )
>     if object.type == String
>     ...
>     elsif object.type == Numeric
>     ...
>     end
> end
>
> I'm thinking of instances (for example) where you can create an object
from
> several different objects passed to the constructor. E.g.
>
> m = Month.new(12)
> m = Month.new('December')
> m = Month.new(anotherMonth)
>
> thus, Month.initialize has to have a case or if statement.
>
> Thanks in advance!
>
> JJ
>
> --
> Be Kind, Be Careful, Be Yourself
> --
> Solid, reliable software at reasonable prices
> http://www.johnjohnsonsoftware.com
>
>
>
>
>