From: Sean O'Halpin <sean.ohalpin@...>
Date: 2007-10-28T23:02:16+09:00
Subject: Re: Duplicate elements in array

------=_Part_9216_2267369.1193580138481
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

On 10/28/07, Robert Klemme <shortcutter@googlemail.com> wrote:
>
> irb(main):007:0> array = %w{apple banana apple orange}
> => ["apple", "banana", "apple", "orange"]
> irb(main):008:0> array.inject(Hash.new(0)) {|ha,e|
> ha[e]+=1;ha}.delete_if {|k,v| v==1}.keys
> => ["apple"]
>
> Kind regards
>
>         robert
>
>
Succint ~and~ efficient! Do you have a mail filter checking for any posts
containing 'inject'? :)

Regards,
Sean

------=_Part_9216_2267369.1193580138481--