From: "David A. Black" <dblack@...>
Date: 2007-10-18T05:13:58+09:00
Subject: Re: Class instance variable idiom

Hi --

On Thu, 18 Oct 2007, Perry Smith wrote:

> I am using this technique for class instance variables:
>
> class << self
>  def set_foo(s)
>    @foo = s
>  end
>  alias :foo= :set_foo
>
>  def foo
>    @foo
>  end
> end
>
> Then to reference foo from an instance of the class (or subclass), I do:
>
>  self.class.foo
>
> Is there a cleaner way, in particular for the reference of the class
> instance variable, to do this?

Yes:

   class C
     class << self
       attr_accessor :foo
     end
   end


David

-- 
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