From: William James <w_a_x_man@...>
Date: 2006-07-21T05:35:05+09:00
Subject: Re: how to split an array in sub arrays of the same length

Paolo Bacchilega wrote:
> Hi,
>
> Is there a way to split an array in sub arrays of the same length, that
> is :
>
> [ 1, 2, 3, 4, 5, 6, 7, 8 ].unknown_function(3)
>
> that returns:
>
> [ [1, 2, 3], [4, 5, 6], [7, 8] ]
>
>
> thanks in advance.

Always remember that a program without inject is a
pointless program.

[ 1, 2, 3, 4, 5, 6, 7, 8 ].inject([[]]){|a,x|
  a.last.size<3 ? a.last << x : a << [x]; a }