From: Farrel Lifson <farrel.lifson@...>
Date: 2007-09-18T00:27:19+09:00
Subject: Re: group array elements in groups of two

On 17/09/2007, Emmanuel Oga <oga_emmanuel_oga@yahoo.com.ar> wrote:
> A better way to do this? :
>
> arr= [1, 2, 3, 4, 5, 6, 7, 8]
> new= []
> while !arr.empty?
>   elem1, elem2= arr.pop, arr.pop
>   new << [elem2, elem1];
> end
> new.reverse!
>
> new= [[1, 2], [3, 4], [5, 6], [7, 8]]
>
> Thanks!
irb(main):012:0> require 'enumerator'
=> true
irb(main):013:0> new = []
=> []
irb(main):014:0> [1,2,3,4,5,6].each_slice(2) do |slice|
irb(main):015:1*   new << slice
irb(main):016:1> end
=> nil
irb(main):017:0> new
=> [[1, 2], [3, 4], [5, 6]]