From: dblack@...
Date: 2006-06-16T18:56:23+09:00
Subject: Re: Why the lack of mixing-in support for Class methods?

Hi --

On Fri, 16 Jun 2006, Yukihiro Matsumoto wrote:

> Hi,
>
> In message "Re: Why the lack of mixing-in support for Class methods?"
>    on Fri, 16 Jun 2006 01:10:53 +0900, ara.t.howard@noaa.gov writes:
>
> |is this by design?
> |
> |   harp:~ > cat b.rb
> |   require 'class_extension'
> |   module M
> |     class_extension{ attr_accessor 'a' }
> |   end
> |   M.a # exception!
>
> Yes.  class_extension add features to the target class but not to the
> module itself.
>
>  class C
>    include M
>  end
>  M.a = 42
>  p M.a # => 42

Will this happen if the module is included in another module?  If so,
I'm wondering whether a more generic name, without "class" in it,
could be used instead of "class_extension".


David

-- 
David A. Black (dblack@wobblini.net)
Ruby Power and Light, LLC (http://www.rubypowerandlight.com)

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