From: Julian 'Julik' Tarkhanov <listbox@...>
Date: 2006-06-25T23:38:04+09:00
Subject: Re: implementation of mixins?


On 25-jun-2006, at 16:17, Roger Johansson wrote:
>
> So, will it be a true mixin , or just a redirection mixin?

The mixin works with the methods and instance variables available on  
the bearing instance

module LengthDisplay
   def show
     puts "Length is #{@len}"
   end
end

class One
   include LengthDisplay
   attr_accessr :len
end

This way One will get a show method from the mixin, but you still can  
override the method in the class to get more refined behavior.
It's not copied - so if you change the method in the module it's  
going to change for all the bearing classes as well.
-- 
Julian 'Julik' Tarkhanov
please send all personal mail to
me at julik.nl