From: trans <transfire@...>
Date: 2009-10-13T10:24:18+09:00
Subject: Re: Class Level inheritable attributes - are we there yet?

Closer to what you want?

  class A
    def self.foo
      instance_variable_defined?("@foo") ? @foo : foo!
    end
    def self.foo!
      @foo = ancestors[1].foo if ancestors[1].respond_to?(:foo)
    end
    def self.foo=(x)
      @foo = x
    end
  end