From: Ittay Dror <ittay.dror@...>
Date: 2008-07-14T20:58:09+09:00
Subject: Re: Help with class instance variables

Hi,

Rick Denatale wrote:

> You haven't used an class variables on this thread.  Your initial code
> created class instance variables, i.e. instance variables belonging to 
> the
> object which represents the class.  Class variables in Ruby use a double 
> @
> prefix, are visible/shared between the class, any subclasses, and 
> instances
> of the same, have some interesting quirks in their semantics and are 
> avoided
> or at least used sparingly by many experienced Rubyists.
> 
> 

Let me rephrase, trying to to use any terminology. Let's say I have a 
class Person whose instances have variables like name and age. Now, the 
Person class also has a cache for all persons, loaded from a file. So 
this is a single variable shared by all instances and is initialized 
once. How do I initialize it in Ruby?
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