Hello. Could someone please tell me if I've found (a) a bug in Array::Compare, (b) some 5.10 weirdness, or (c) if I am just making a really obvious mistake?

My code, taken almost entirely from the synopsis:

#!/usr/bin/perl -w

use strict;
use warnings;
use Array::Compare;

my @array1 = [1,     2];
my @array2 = [2,     1];

my $comp = Array::Compare->new;

if ($comp->perm (\@array1, \@array2)) {
    print "Arrays are perms\n";
} else {
    print "Nope. Arrays are completely different\n";
}

[download]

The output, which is the same under Cygwin and Strawberry, both 5.10:

Nope. Arrays are completely different

They should be permutations, yes?

Strawberry Perl, on Win XP Pro SP3:

This is perl, v5.10.0 built for MSWin32-x86-multi-thread

Copyright 1987-2007, Larry Wall

Perl may be copied only under the terms of either the Artistic License
+ or the
GNU General Public License, which may be found in the Perl 5 source ki
+t.

Complete documentation for Perl, including FAQ lists, should be found 
+on
this system using "man perl" or "perldoc perl".  If you have access to
+ the
Internet, point your browser at http://www.perl.org/, the Perl Home Pa
+ge.

[download]

Thanks in advance!

planetscape

In reply to Bug in Array::Compare? by planetscape

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.