From: Patrick Li <patrickli_2001@...>
Date: 2008-08-16T04:24:14+09:00
Subject: Re: Ruby: Boolean Challenge

Hey,
Sorry for the late reply: I was out to lunch:

I didn't know you can't instantiate NilClass.
Anyway here's a workaround involving singletons:

class OddRecognizer
  def knows(num)
    return self if num%2==0

    o = nil
    class << o
      def or(num)
        return self if num%2==1
        return OddRecognizer.new
      end
    end
    return o
  end

  alias :or :knows
end

It was an interesting question from a intellectual standpoint.
But I wouldn't touch this code with a ten foot pole. lol

  -Patrick
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