Ah, but the "action at a distance" most certainly does occur. If you create a sorting sub in one module and use it in another ... Look at the following code: 
my $a = 5;

my @b = reverse (0 .. 9);
print "@b\n";

sub boo {
$a <=> $b
}

@b = sort boo @b;
print "@b\n";
print $a,$/;
----
9 8 7 6 5 4 3 2 1 0
0 1 2 3 4 9 8 5 6 7
5

[download]
Note the lack of sorting after 4. :-)

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In reply to Re: Mistaken notions of $a/$b strict by dragonchild
in thread use strict won't require explicit name for all variables? by Biker

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