From: why the lucky stiff <ruby-talk@...>
Date: 2005-04-19T02:28:47+09:00
Subject: Re: [ANN] Article: Seeing Metaclasses Clearly

Lionel Thiry wrote:

> The only I've found to make your sample code work is to refactor 
> class_def this way:
>  def class_def name, &blk
>   meta_eval { define_method name, &blk }
>  end

That's the `meta_def' you've recreated above.

The `class_def' method is intended to be used to add instance methods 
(like the `initialize' I'm adding in Dwemthy's Array):

  class Dragon; end
  Dragon.class_def :initialize do
     @life = 11; @strength = 12
  end

  >> d = Dragon.new
  => #<Dragon:0xb7d571e8 @strength=12, @life=11>

The `meta_def' can be used to add class methods, because of reasons 
stated throughout the article and in my response to Jeff.

_why