From: Edgardo Hames <ehames@...>
Date: 2005-07-27T04:05:35+09:00
Subject: Re: Abstract class or interface?

On 7/22/05, Jim Weirich <jim@weirichhouse.org> wrote:
> 
> EdUarDo said:
> > Hi all again :),
> >
> > How could I implement this model?
> >
> > Window <>--------------------- Button
> >                                   ^
> >                                   |
> >                                   |
> >                           -----------------
> >                           |               |
> >                        BigButton      LittleButton
> >
> >
> > Being 'Button' an abstract class or an interface.
> > I mean, how do I define an interface? Must I use modules?
> 
> If Button is a like a Java interface (i.e. no behavior), then you don't
> need one in Ruby.  Just implement BigButton and LittleButton with
> compatible methods.
> 
> If there is shared code in Button, then you can (1) create a class Button
> and inherit from it in BigButton and LittleButton, or (2) Create a Button
> module and include it in both Big and Little Buttons.
> 

Some time ago, I posted a similar problem. Check the following link:

http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/127973

Cheers,
Ed
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