From: Warren Ferguson <warren_e_ferguson@...>
Date: 2010-08-08T08:26:14+09:00
Subject: Re: question about sub-class of array

You're right, and I'm enjoying your book. Just to be clear, this solved 
the problem, replace the earlier to_bv method with this

class String
  def to_bv
    # convert bit string of 0s and 1s, ordered msb to lsb,
    # to Bitvector, ordered lsb to msb
    v = self.reverse.split(//).map{|k| k.to_i(2)}
    Bitvector.new(v)
  end
end

So, I hope I understood your answer correctly. Thanks!
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