From: Raphael Bauduin <rblists@...>
Date: 2006-05-11T00:52:52+09:00
Subject: class << my_instance and class variables

Hi,

When running this code,

class A
  def initialize(i)
    @value = i
  end
end

a = A.new(3)

class << a
  @@v = 5
  def test
    @value>@@v
  end
end

a.test

 I get a warning:
"class variable access from toplevel singleton method"

From my understanding, the test method is added to the class specific
to object a, and other instances of A don't have access to that
method. The class variable @@v is also added to the same object
specific class. But then, what exactly does this warning mean, and how
bad is it?

Thanks

Raph