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Postings from February 2009
Chas. Owens wrote:
> On Thu, Feb 19, 2009 at 10:20, mritorto <mritorto@gmail.com> wrote:
>> owen,
>>
>> How do you use the List::Compare module is the same as array::compare?
> snip
>
> List::Compare can be found in CPAN*. Here is you program rewritten to
> use it (this is not what I would do):
We know. ;-)
<snip>
> my @atlas = <$atlas>;
> my @isis = <$isis>;
>
> my $comparison = List::Compare->new(\@atlas, \@isis);
>
> print $comparison->get_symmetric_difference;
It's worth noting that if the so called symmetric difference is
sufficient, the same result is achieved if you use the approach suggested in
perldoc -q difference.+arrays
Actually, you only need one single hash:
my %count;
$count{$_}++ while <$atlas>;
$count{$_}++ while <$isis>;
print sort map { $count{$_} == 1 ? $_ : () } keys %count;
--
Gunnar Hjalmarsson
Email: http://www.gunnar.cc/cgi-bin/contact.pl
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