From: "David A. Black" <dblack@...>
Date: 2008-09-11T22:46:48+09:00
Subject: [ruby-core:18556] Re: Class as second-generation singleton class

Hi --

I'm just bumping this in the hope that someone can explain its
purpose, or perhaps make it go away :-)


David

On Tue, 2 Sep 2008, David A. Black wrote:

> Hi --
>
> I'm totally unclear on the rationale for this behavior in 1.9:
>
>  class Object
>    def singleton_class
>      class << self; self; end
>    end
>  end
>
>  "".singleton_class.singleton_class   # => Class
>
> I don't see how it makes sense for Class to report itself as the
> singleton class of any object, including a singleton class. It's not
> likely that this double-depth singleton class would be needed, but I
> think it should behave predictably:
>
>  class << obj    # obj's singleton class
>
> and not have a special case wired into it. Maybe I'm missing
> something?
>
>
> David
>
> -- 
> Rails training from David A. Black and Ruby Power and Light:
>  Intro to Ruby on Rails  January 12-15   Fort Lauderdale, FL
>  Advancing with Rails    January 19-22   Fort Lauderdale, FL *
>  * Co-taught with Patrick Ewing!
> See http://www.rubypal.com for details and updates!
>

-- 
Rails training from David A. Black and Ruby Power and Light:
   Intro to Ruby on Rails  January 12-15   Fort Lauderdale, FL
   Advancing with Rails    January 19-22   Fort Lauderdale, FL *
   * Co-taught with Patrick Ewing!
See http://www.rubypal.com for details and updates!