From: Gavin Kistner <gavin@...>
Date: 2004-03-13T04:13:34+09:00
Subject: Re: iterating with multiple values

On Mar 12, 2004, at 11:09 AM, gabriele renzi wrote:
> Hi gurus and nubys,
>
> Suppose you are dealing with an array like [1,2,3,4], and suppose ypou
> want to deal, at any iteration, with 3 values.I mean something like:
>
> [1,2,3,4].each_3 do |pre,cur,next|
>  print pre,cur,next,"\n"
> end

I would use Array#each_index and peek behind and ahead.