From: Brian Candler <B.Candler@...>
Date: 2005-03-30T17:53:30+09:00
Subject: Re: Please tell me what this means? self.<method> in a class

On Tue, Mar 29, 2005 at 08:29:34PM +0900, Glenn Smith wrote:
> Ah.  That's what confused me.  I couldn't find it in pickaxe2.
> 
> Thanks David(s!)

There's more here:
http://www.rubygarden.org/ruby?SingletonTutorial