From: Devin Mullins <twifkak@...>
Date: 2005-10-07T10:47:09+09:00
Subject: Re: One-liner removing duplicate lines

Sean O'Halpin wrote:

>On 10/6/05, Robert Klemme <bob.news@gmx.net> wrote:
>  
>
>>(David, I'm sorry again this is no #inject solution.)
>>    
>>
>I couldn't resist :)
>
>  ruby -e "ARGF.inject({}) {|h, x| h.key?(x) or h[x] = puts(x); h}"
>  
>
I think he was looking for a functional (non-side-effecty) version:
ruby -e"ARGF.inject(['']) {|s,l| s.include?(l)?s:s<<l}.display"

Devin