05-30-2014
Sorry, I edited my post because, I thought it was irrelevant what I was going to propose.
Quote:
Note also that ^a[123]\([0-9]\{1,3\}\)\?\+ (on systems that accept that form of RE) wouldn't do what was wanted even if it was a valid BRE): it precludes a4 through a9, a40 through a99, and a400 through a999 which, presumably, would have been wanted as part of the vertical elipsis between the lines starting with a3 and a3000.
I would have been wrong as well because I believe it would have done a3000 - a3999
Last edited by Aia; 05-30-2014 at 01:12 AM..
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LEARN ABOUT DEBIAN
algorithm::checkdigits::m43_001
CheckDigits::M43_001(3pm) User Contributed Perl Documentation CheckDigits::M43_001(3pm)
NAME
CheckDigits::M43_001 - compute check digits for Code-39
SYNOPSIS
use Algorithm::CheckDigits;
$c39 = CheckDigits('code_39');
if ($c39->is_valid('AB-123K')) {
# do something
}
$cn = $c39->complete('AB-123');
# $cn = 'AB-123K'
$cd = $c39->checkdigit('AB-123K');
# $cd = 'K'
$bn = $c39->basenumber('AB-123K');
# $bn = 'AB-123'
DESCRIPTION
ALGORITHM
1. After replacing all non numeric letters with their respective values, the sum of all numbers is computers
2. The checkdigit is the sum from step 1 taken modulo 43.
METHODS
is_valid($number)
Returns true only if $number consists solely of numbers and the last digit is a valid check digit according to the algorithm given
above.
Returns false otherwise,
complete($number)
The check digit for $number is computed and concatenated to the end of $number.
Returns the complete number with check digit or '' if $number does not consist solely of digits and spaces.
basenumber($number)
Returns the basenumber of $number if $number has a valid check digit.
Return '' otherwise.
checkdigit($number)
Returns the checkdigit of $number if $number has a valid check digit.
Return '' otherwise.
EXPORT
None by default.
AUTHOR
Mathias Weidner, <mathias@weidner.in-bad-schmiedeberg.de>
SEE ALSO
perl, CheckDigits, www.pruefziffernberechnung.de.
perl v5.10.0 2008-05-17 CheckDigits::M43_001(3pm)