From: Robert Klemme <shortcutter@...>
Date: 2008-09-01T23:28:20+09:00
Subject: Re: Checking for 'nil' Class (not instance) variables?

2008/9/1 David A. Black <dblack@rubypal.com>:

> On Mon, 1 Sep 2008, John Pritchard-williams wrote:
>
>> See below, what's the proper way of checking for initialized
>> class-variables ?

>> --
>> irb(main):031:0> @nosuchvar.nil?
>> => true
>> irb(main):032:0> @@nosuchvar.nil?
>> NameError: uninitialized class variable @@nosuchvar in Object
>>       from (irb):32
>> irb(main):033:0>
>
> defined?(@@nosuchvar)

You forgot the disclaimer that class variables are fragile and should
be avoided. :-)

Kind regards

robert

-- 
use.inject do |as, often| as.you_can - without end