From: Brian Candler <B.Candler@...>
Date: 2007-04-13T03:21:09+09:00
Subject: Re: distinct

On Fri, Apr 13, 2007 at 12:55:06AM +0900, Jean-S?bastien wrote:
>   a little question... how to get distinct values from an hash?
> 
> ex:
> hash = {"a"=>100, "b"=>200, "d"=>100, "d"=>200}
> ==> hash_with_distinct_values = [100, 200]

irb(main):001:0> hash = {"a"=>100, "b"=>200, "d"=>100, "d"=>200}
=> {"a"=>100, "b"=>200, "d"=>200}
irb(main):002:0> hash.invert.keys
=> [100, 200]