From: mzhang.cn@...
Date: 2005-11-10T17:12:13+09:00
Subject: Newbie question: About class variable and class_eval

Hi all,
Please look at the following code
-----------------------------------------------------------
class Cls
  @@cv = 0
  def initialize
    @iv = 1
  end
end

c=Cls.new
Cls.class_eval { def iv() @iv end }
puts c.iv
Cls.class_eval { def cv() @@cv end }
puts c.cv
-------------------------------------------------------------
When running this code snippet, I got the result:
$ ruby classvar.rb
1
classvar.rb:11:in `cv': uninitialized class variable @@cv in Object
(NameError).

Why I can't get the class variable in class_eval?