From: Eric Mahurin <eric_mahurin@...>
Date: 2005-07-04T01:32:39+09:00
Subject: Re: class variable leading a double life

--- Devin Mullins <twifkak@comcast.net> wrote:

> Thanks for the example. I'm just wondering why
> 
> class Foo
>   def blah
>     @@cnt += 1
>   end
> end
> 
> couldn't have been a shortcut for [an optimization of]:
> 
> class Foo
>   class << self
>     attr_accessor :cnt
>   end
>   def blah
>     self.class.cnt += 1
>   end
> end

I agree.  Class variables should just be a shortcut for
instance variables of an object's class.  Having an independent
and slightly different class variable concept seems redundant,
confusing, and inconsistent.

You could just say that these should be equivalent:

@@x       # self.class.instance_eval{@x}
@@x = y   # self.class.instance_eval{@x=y}




		
__________________________________ 
Discover Yahoo! 
Stay in touch with email, IM, photo sharing and more. Check it out! 
http://discover.yahoo.com/stayintouch.html