From: Robert Dober <robert.dober@...>
Date: 2010-05-14T23:39:25+09:00
Subject: Re: Comparing elements within an array

On Fri, May 14, 2010 at 4:19 PM, alexg <alexg@ruggedtextile.com> wrote:
> On Fri, 14 May 2010 22:03:21 +0900, Toby Rodwell <trodwell@iee.org> wrote:
yes I do not worry about 1.8 much anymore, not very considerate of me
though, sorry
> The code is ruby 1.9 only I think. Another way for 1.8.6:
>
> module Enumerable
>  def unique_by &blk
>    keys = {}
>    find_all{ | ele |
>      key = blk[ele]
>      keys.has_key?(key) ? false : keys[key] = true
which is better than tap anyway :)
<snip>
R.
-- 
The best way to predict the future is to invent it.
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