From: Matthias Veit <matthias_veit@...>
Date: 2002-10-15T01:41:47+09:00
Subject: Re: access surrounding class


>>>> RK == Ryan King <rking@panoptic.com> wrote:

RK> Matthias, can you describe your problem at a higher level?
RK> 
RK> This seems funky -- maybe there's a better approach?
RK> 
RK>  - Ryan King

Sorry for my stumbled sentences - I try again.

In specializing classes I can refine methods:

class A
  def doit
    puts "bla"
  end
end
class B < A
  def doit
    puts "foo"
  end
end
A.new.doit
B.new.doit

will print:
bla
foo

as expected. If I define a class inside A, use functionality
from A (which must be static), I can not refine this 
functionality:

class A
  def self.doit
    puts "bla"
  end
  class Inner
    def a 
      A.doit
    end
  end
end
class B < A
  def self.doit
    puts "foo:
  end
end
A::Inner.new.a
B::Inner.new.a

will print:
bla
bla

If I could express something like <OuterClass>.doit that would
be defined in A and is refineable. I do not know, if there is
such a construct - I think not.
But perhaps there is a simple solution to circumvent the absolute
path to make this work??

Hope this was more expressive... :)

Matthias

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