From: Ilias Lazaridis <ilias@...>
Date: 2005-04-20T22:04:38+09:00
Subject: Re: [EVALUATION] - E03d - The Ruby Object Model (End Game)

Ilias Lazaridis wrote:
[...]

> If I am wrong, please show me how to access the metaclass:
> 
> ClassMetaClass = Class.???
> 
> ClassMetaClass.<class operations / access>
> 
> -
> 
> please avoid usage of libraries, excessive code etc. We are talking 
> about an oject-model, which should simply... exist!
> 
> so, which is the cleanes and simplest way to get access to the "metaclass"?

class Class
   def Meta()
     @Meta ||= (class<<self;self;end)
   end
end

class Talker
end

puts "\n----- verifying validity of MetaClass Access ----------\n"

p Talker.Meta.object_id
p (class<<Talker;self;end).object_id
p Class.Meta.object_id
p (class<<Class;self;end).object_id
p Module.Meta.object_id
p (class<<Module;self;end).object_id
p Object.Meta.object_id
p (class<<Object;self;end).object_id
p NilClass.Meta.object_id
p (class<<NilClass;self;end).object_id

puts "\n----- start playing with the MetaClasses ---------------\n"

puts "\nSuperClasses:\n"
p Object.Meta.superclass
p Module.Meta.superclass
p Class.Meta.superclass
p Talker.Meta.superclass

puts "\nClasses:\n"
p Object.Meta.class
p Module.Meta.class
p Class.Meta.class
p Talker.Meta.class


> I like to remind you, that evaluators coming from C++, Smalltalk, Java 
> etc. are not intrested in the specialities of a language (especially if 
> they are not necessary).
> 
> The developers and the community should be capable to use 
> standard-terminology to explain the ruby model.

The last step would be, to verify the used terminology.

"metaclass" and "singleton" seems to be used incorrect.

[but at this point, I'm exhausted by the excessive off-topic's.]

-

see an compact document about terminology and delayed recognition:

http://lazaridis.com/core/project/gnu_gpl.html

> Otherwise: who should take you serious?

..

-- 
http://lazaridis.com