From: Ryan Davis <ryand-ruby@...>
Date: 2009-03-02T15:47:53+09:00
Subject: Re: Delegating class methods


On Mar 1, 2009, at 12:33 , abc wrote:

> how would you forward calls from class methods to a class atribute?

I'm not thrilled that you have to use a class method to access the  
attribute, but this works:

> class Foo
>   extend SingleForwardable
>   def self.hash; @@hash ||= {}; end
>   def_delegators :hash, :size, :keys
> end
>
> p Foo.size
> p Foo.keys

It'd be ideal if you could use :@@hash for the delegators line, but I  
couldn't get that to work easily.