From: Robert Klemme <shortcutter@...>
Date: 2008-02-05T01:19:43+09:00
Subject: Re: convert array to array-of-arrays?

2008/2/4, Chris Hulan <chris.hulan@gmail.com>:
> On Feb 4, 10:45 am, Phlip <phlip2...@gmail.com> wrote:

> > Given [1, 2, 3, 4], what's the most Rubiesque way to get [[1, 2], [3, 4]]?
> >
> > I had figured a variation on Array#transpose would be available, but I can't
> > find one!
>
> have a look at enum.partition (http://ruby-doc.org/core/classes/
> Enumerable.html#M003161)

Not sure what the OP wants, but AFAIK #partition only ever returns two
partitions.  If the task is to combine consecutive elements
#each_slice works well:

$ irb -r enumerator
irb(main):001:0> [1, 2, 3, 4].to_enum(:each_slice, 2).to_a
=> [[1, 2], [3, 4]]
irb(main):002:0>

Kind regards

robert

-- 
use.inject do |as, often| as.you_can - without end