From: Eivind Eklund <eeklund@...>
Date: 2007-12-15T00:39:06+09:00
Subject: Re: each with previous?

On Dec 14, 2007 4:28 PM, Jari Williamsson
<jari.williamsson@mailbox.swipnet.se> wrote:
> I'm going through lots of data where the result of the current is
> affected by the previous element. So what I would need is an
> "each_with_previous {|current, prev|}"
> ...to make it a bit more readable. Is there any built-in Ruby method
> that I might have overlooked, or should I build my own?

Enumerable.each_cons(2) { |current, prev| ... }

Eivind.