From: Lyle Johnson <lyle@...>
Date: 2003-01-22T04:17:54+09:00
Subject: Re: Mixins

Gennady wrote:

> I am completely lost -- it looks like it is not possible to redefine a 
> method at all with a mixin:
>  
> class Test
>   def foo
>      puts "Test#foo"
>   end
> end
>  
> module Mixin
>   def foo
>     puts "Mixin#foo"
>   end
>   def bar
>     puts "Mixin#bar"
>   end
> end
>  
> class Test
>   include Mixin
> end
>  
> Test.new.foo  #==> Test#foo
> Test.new.bar  #==> Mixin#bar
>  
> So new method are added just fine, however a method I would like to 
> redefine stays the same. Is it how it was supposed to work?

Yes, this is how it's supposed to work. When you mix a module into a 
class, the module more-or-less acts as a superclass of the class it's 
mixed-into. So for your example, Test#foo is redefining the Module#foo 
method.