From: Trans <transfire@...>
Date: 2007-11-10T10:14:30+09:00
Subject: equivalent injecting implementations?

Are these strictly equivalent? I get the feeling no, but I haven't
been able to demonstrate it yet.

  def injecting(s)
    inject(s) do |k, i|
      yield(k, i); k
    end
  end

  def injecting(res, &block)
    ([res]*length).zip(to_a).each(&block)
    res
  end

Thanks,
T.