From: dblack@...
Date: 2002-11-17T13:32:50+09:00
Subject: Re: ruby-dev summary 18613-18710

Hi --

> If you want the i-th element of each object, just iterate through the
> objects and grab the i-th element :-)  In fact you can save yourself a
> lot of typing.  Here's a rewrite:

And, just for fun, here's another rewrite, this time one which isn't
completely and utterly flawed (I hope):

  module Enumerable
    def zip(&block)
      block ||= lambda { |*tuple| tuple }
      top,rest = map {|e| e.size}.uniq
      if rest
        raise "zip with unequal length lists"
      else
        (0...top.to_i).map {|i| block.call(*map {|e| e[i]})}
      end
    end
  end


David

-- 
David Alan Black
home: dblack@candle.superlink.net
work: blackdav@shu.edu
Web:  http://pirate.shu.edu/~blackdav