From: "Ara.T.Howard" <Ara.T.Howard@...>
Date: 2004-02-20T20:22:38+09:00
Subject: inheriting constants


is this an appropriate way to inherit constants?

~/eg/ruby > cat a.rb
#!/usr/bin/env ruby

class A
  OPTIONS = 1, 0 

  def klass; self.class; end

  def options
    opts = []

    k = klass
    loop do
      opts.push(*k::OPTIONS)
      k = k.superclass 
      break unless defined?(k::OPTIONS)
    end

    opts
  end
end

class B < A
  OPTIONS = 3, 2 
end

class C < B
  OPTIONS = 5, 4 
end

p A.new.options
p B.new.options
p C.new.options

~/eg/ruby > ruby a.rb
[1, 0]
[3, 2, 1, 0]
[5, 4, 3, 2, 1, 0]



-a
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