From: Reacher <brandon.g.jones@...>
Date: 2008-02-05T01:20:00+09:00
Subject: Re: convert array to array-of-arrays?

On Feb 4, 10:00 am, Phlip <phlip2...@gmail.com> wrote:
> Chris Hulan wrote:
> >> Given [1, 2, 3, 4], what's the most Rubiesque way to get [[1, 2], [3, 4]]?
> > have a look at enum.partition (http://ruby-doc.org/core/classes/
> > Enumerable.html#M003161)
>
> I can't partition by value, so the closest conceptual match would be something like:
>
>     assert do
>        [1, 2, 3, 7].partition_with_index{|p,i| i.odd? }.transpose ==
>             [[1, 2], [3, 7]]
>     end
>
> And that's a heckuva lot of typing, even if partition_with_index existed!
>
> --
>    Phlip

Roll your own?

class Array
  def regroup(count)
    # do some Ruby awesomeness*
  end
end

>> a = [1, 2, 3, 4]
[1, 2, 3, 4]
>> a.regroup(2)
[[1, 2], [3, 4]]

* - exercise left up to the reader