From: Justin Collins <collinsj@...>
Date: 2006-05-14T06:15:48+09:00
Subject: Using alias_method in mixin module

Hi all,

I have a mixin module that needs to redefine a particular method if it 
already exists and retain a reference to it for later use. This is what 
I came up with:

module Example

        def Example.included(klass)
                if klass.instance_methods.include? "look_inside"
                        klass.instance_eval { alias_method 
:old_look_inside, :look_inside }
                        klass.send(:define_method, :look_inside) { |event|
                            #use old_look_inside in here
                        }
                end
        end

end


Is there a better/different way of doing this? (This works, I'm just 
curious).

-Justin