From: David Alan Black <dblack@...>
Date: 2001-10-31T10:24:08+09:00
Subject: [ruby-talk:23893] Re: Overiding a method in another module

Hello --

On Wed, 31 Oct 2001, Mark Hahn wrote:

> Why can't I just do this to override M1::C1::meth in M2?
>
> module M1
>   class C1
>     def meth
>       p 'M1.meth'
>     end
>   end
> end
> include M1
>
> module M2
>   class M1::C1      <=== gives syntax error
>     def meth
>       p 'M2.meth'
>     end
>   end
> end
> include M2
>
> C1.new.meth   => M2.meth

You can do this:

  module M1
    class C1
      def meth
	p 'M1.meth'
      end
    end
  end

  include M1

  module M2
    M1::C1.class_eval <<EOE
      def meth
	p 'M2.meth'
      end
  EOE
  end

  C1.new.meth   # => M2.meth


David

-- 
David Alan Black
home: dblack@candle.superlink.net
work: blackdav@shu.edu
Web:  http://pirate.shu.edu/~blackdav