From: Leo <minilith@...>
Date: 2009-03-02T17:18:34+09:00
Subject: Re: Delegating class methods

> BTW, there's some glitch here. Let's say you inherit from Foo:

I'm not sure this can really be called a glitch because that's simply
the way self.instance-variables (or whatever their correct name is)
work. One solution would be to create a inherited class method that
copies the variables from the super class to the subclass.

    class Foo
        @one = 1
        @two = 2
        @three = 3

        class << self
            attr_accessor :one, :two, :three

            def inherited(sub)
                sub.one = one
                sub.two = two
                sub.three = three
            end
        end
    end

    class Momo < Foo
    end

    Momo.one #=> 1


That's cumbersome of course and it would be great if ruby had a
construct to do this automatically with having to define an inherited
hook.

--
Leo

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