From: Intransition <transfire@...>
Date: 2011-09-07T16:48:46+09:00
Subject: Re: Grouping an array into sub-arrays.



On Sep 6, 7:52 pm, "Aaron D. Gifford" <astound...@gmail.com> wrote:
> Just move things around a bit and you'll notice you've already got the
> behavior you want (or pretty close):
>
> irb(main):001:0> arr = [0,1,2,3,4]
> => [0, 1, 2, 3, 4]
> irb(main):002:0> [0..-2, -1].map{|i| arr[i]}
> => [[0, 1, 2, 3], 4]
> irb(main):003:0> [0, 2..3, 4..-1].map{|i| arr[i]}
> => [0, [2, 3], [4]]
>
> So just put the list of group selectors first, execute a map/collect
> on it and access the original array slices you want.
>
> Aaron out.

Ah, of course. Thanks.