From: dblack@...
Date: 2006-12-10T22:06:23+09:00
Subject: Re: attr_reader, etc for class variables

Hi --

On Sun, 10 Dec 2006, Devin Mullins wrote:

> Daniel Finnie wrote:
>> Is there such a thing?
> Rails' ActiveSupport provides them as cattr_* and mattr_*. For that matter, 
> they're not that hard to write. For that matter, what Eric said.

I'd add that if you write them (and I agree with Eric that instance
variables are much better for this; indeed, something is pretty much
always better than class variables for everything), it's best to name
them something else.  "attr" names suggest an attribute of an object,
but since class variables are not uniquely associated with any one
object, they're not a good fit for recording an attribute.


David

-- 
                   David A. Black | dblack@wobblini.net
Author of "Ruby for Rails"   [1] | Ruby/Rails training & consultancy [3]
DABlog (DAB's Weblog)        [2] | Co-director, Ruby Central, Inc.   [4]
[1] http://www.manning.com/black | [3] http://www.rubypowerandlight.com
[2] http://dablog.rubypal.com    | [4] http://www.rubycentral.org