From: "David A. Black" <dblack@...>
Date: 2004-08-11T08:40:41+09:00
Subject: Re: Singleton class methods

Hi --

On Wed, 11 Aug 2004, Gennady wrote:

> >>At least for "def Foo.f1" and "class << Foo" it is not the same one: one 
> >>holds "A=10" and another -- "A=20".
> > 
> > 
> > But only one of them is a singleton class; the other is simply Foo
> > itself :-) When you do def Foo.m, 'self' is Foo; but when you do class
> 
> That's where a slight misunderstanding might have occurred: I was 
> calling "Foo itself" an original singleton class (isn't it? ;-)), and 
> the one created by "class << Foo" -- an anonymous singleton class of Foo 
> (i omitted word "anonymous" from my original reply, sorry).

I realize that we should probably be saying 'virtual class' instead of
'singleton class' (at least, that's what shows up in the error
messages when you try to instantiate one) -- but either way, Foo isn't
one :-)  It's just a regular class.


David

-- 
David A. Black
dblack@wobblini.net