From: Mischa Fierer <f.mischa@...>
Date: 2009-01-29T14:19:55+09:00
Subject: Real life use of each_cons?

Hello,

I've been going through the enumerable/enumerator methods that I'm
unfamiliar with and came across each_cons. Apart from a post by a guy
who wasn't sure where it was even defined, I have only come across one
use of it in the wild:

(From Prawn)

  def polygon(*points)
      move_to points[0]
      (points << points[0]).each_cons(2) do |p1,p2|
        line_to(*p2)
      end
    end


Does anyone have any ideas on other cases where each_cons would be
useful? Or perhaps insight into why it's in Ruby?

Best,

M
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