From: Robert Klemme <shortcutter@...>
Date: 2011-01-06T17:10:40+09:00
Subject: Re: Class Initialization?

On Wed, Jan 5, 2011 at 6:18 PM, Kedar Mhaswade <kedar.mhaswade@gmail.com> wrote:

> It was not clear if the "class body" will be executed at most once.
> That's now clear.

Good!

> I like this better than Java's static initializer!
>
> Robert -- but isn't @@x a class variable and @x an instance variable?
> Maybe I am confused a bit. I want this "table" I am initializing to be
> available from the class, without having to create any instances of it.

Short answer: classes can have instance variables as well.  Long
answer (please see Andrew's reply).  Variables with @@ are really a
hybrid which is directly readable from the class and instance.  But
there are some subtle issues with order in which they are created and
so I always recommend to not use them.  You'll find plenty of
discussions of this in the archives.

Kind regards

robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/