From: transfire@...
Date: 2006-07-14T10:42:18+09:00
Subject: Re: equivalent of attr_accessor for class variables?


ara.t.howard@noaa.gov wrote:

>    class C
>      class << self
>        attr_accessor 'class_constant'
>      end
>    end

  require 'facet/functor'

  module Kernel

    # Provides access to an object's metaclass (ie. singleton)
    # by-passsing access provisions. So for example:
    #
    #   class X
    #     meta.attr_accesser :a
    #   end
    #
    #   X.a = 1
    #   X.a #=> 1

    def meta
      @_meta_functor ||= Functor.new do |op,*args|
        (class << self; self; end).send(op,*args)
      end
    end

  end

T.