in reply to Re^3: my $x or my ($x)
in thread my $x or my ($x)

Just a quick addition to ptum's. I would write: 
my ($one, $two, $three, $four) = (0,0,0,0);

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as 
my ($one, $two, $three, $four) = (0) x 4;

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In Section Seekers of Perl Wisdom