From: matz@... (Yukihiro Matsumoto)
Date: 2000-07-04T02:03:19+09:00
Subject: [ruby-talk:03768] Re: Array.uniq! returning nil

Hi,

In message "[ruby-talk:03758] Array.uniq! returning nil"
    on 00/07/03, Aleksi Niemel� <aleksi.niemela@cinnober.com> writes:

|Why Array.uniq! returns nil if it doesn't do anything (every element 
|is unique). Same for Array.compact! Next example requires two times 
|the memory what uniq! -version would. Could be a problem with large texts.

Ruby 1.5.x do the magic for you.  Non bang methods don't copy memory
regions unless copying is really needed, using the state-of-the-art
copy-on-write technology. ;-)

							matz.