From: Gary Wright <gwtmp01@...>
Date: 2011-02-05T08:06:40+09:00
Subject: Re: Determining uniqueness on a single array element


On Feb 4, 2011, at 4:58 PM, James Byrne wrote:
>   hex_array = []
>   outer_array.each do |inner_array|
>     next if hex_array.include?( inner_array[2] )
>     hex_array << inner_array[2]
>     .  .  .

This assumes Ruby 1.9.2 where Array#uniq takes a block:

outer_array.uniq { |mtime, name, md5| md5 }.do |mtime, name, md5|
     # do stuff here
end


Gary Wright