my $pie = 123456789;
my @pies = ($pie =~ /(\d{3})/g);
print join("\n", @pies);

[download]
However, I would prefer to use the substr() function thus: 
$pie = 123456789;
my $index = 0;
while($index < length($pie)) {
  print substr($pie, $index, 3)."\n";
  $index += 3;
}

[download]
I choose substr() over unpack() because pack() and unpack() make my brane hurt.

In reply to Re: Regexp to extract groups of numbers by DrHyde
in thread Regexp to extract groups of numbers by neilh

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