SPUG: Fw: Uniq in perl
jeff saenz
jeff at planetoid.net
Mon Mar 19 14:35:47 CST 2001
What if you convert the array values to hash keys and let the hash eliminate the
duplicates? Something like:
@hash{@array} = ();
or maybe a map. but i think maps are inefficient. something like that.
Richard Anderson wrote:
> Does anyone have comments for Mike?
>
> Richard Anderson, Ph.D. www.unixscripts.com
> Perl / Oracle / Unix Richard.Anderson at raycosoft.com
> Raycosoft, LLC Seattle, WA, USA
> ----- Original Message -----
> From: "Mike" <shivan at ici.net>
> To: "Richard Anderson" <Richard.Anderson at raycosoft.com>
> Sent: Friday, March 16, 2001 2:12 PM
> Subject: Uniq in perl
>
> > This is something I had sitting around. I didn't write it. Its a subroutine
> > that uniqs an array. I was just wondering if this is the best way to do it
> > or if anyone has any thing better. Thanks
> >
> >
> > ## Usage: &uniq( \@ARRAY );
> > sub uniq {
> > my (@uwork, @unew, $uname);
> > @uwork = @{$_[0]};
> > @uwork = sort( @uwork );
> > @unew = ( shift @uwork );
> >
> > foreach $uname ( @uwork ) {
> > @unew=( @unew, $uname) if ( $uname ne $unew[ -1 ] );
> > }
> >
> > @{$_[0]}=@unew;
> > }
> >
> > :wq
> >
> >
>
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