[27807] in Perl-Users-Digest
Perl-Users Digest, Issue: 9171 Volume: 10
daemon@ATHENA.MIT.EDU (Perl-Users Digest)
Tue Apr 18 21:05:53 2006
Date: Tue, 18 Apr 2006 18:05:09 -0700 (PDT)
From: Perl-Users Digest <Perl-Users-Request@ruby.OCE.ORST.EDU>
To: Perl-Users@ruby.OCE.ORST.EDU (Perl-Users Digest)
Perl-Users Digest Tue, 18 Apr 2006 Volume: 10 Number: 9171
Today's topics:
Re: FAQ 4.41 How can I remove duplicate elements from a <rwxr-xr-x@gmx.de>
Digest Administrivia (Last modified: 6 Apr 01) (Perl-Users-Digest Admin)
----------------------------------------------------------------------
Date: Wed, 19 Apr 2006 02:57:32 +0200
From: "Lukas Mai" <rwxr-xr-x@gmx.de>
Subject: Re: FAQ 4.41 How can I remove duplicate elements from a list or array?
Message-Id: <e241ts$upe$03$2@news.t-online.com>
robic0 schrob:
[perlfaq fullquote snipped]
>
> This may be more efficient:
>
> $lastelement = undef;
> foreach $element (sort @array)
> {
> if ($lastelement != $element) {
use warnings; use strict;
Using != with undef is a bad idea, even more so as you're apparently
dealing with numbers here: 0 == undef.
But wait, if @array contains numbers, why did you use a lexicographical
sort above?
> push @newarray, $element;
> $lastelement = $element;
> }
> }
------------------------------
Date: 6 Apr 2001 21:33:47 GMT (Last modified)
From: Perl-Users-Request@ruby.oce.orst.edu (Perl-Users-Digest Admin)
Subject: Digest Administrivia (Last modified: 6 Apr 01)
Message-Id: <null>
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End of Perl-Users Digest V10 Issue 9171
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