From: Louis J Scoras <louis.j.scoras@...>
Date: 2006-11-22T02:51:38+09:00
Subject: Re: array question

I love Enumerator so much =)

     require 'enumerator'

     class Array
       def duplicate_internal
         to_enum(:each_cons,2).inject([]) do |r, c|
           r + c
         end
       end
     end

     p [1,2,3,4].duplicate_internal # => [1, 2, 2, 3, 3, 4]


-- 
Lou.