perldoc > Regexp::Common::_support

man perldoc info pydoc3 ri search

📛 NAME

Regexp::Common::support — Support functions for Regexp::Common.

🚀 Quick Reference

Use Case	Command	Description
🔍 Validate a credit card number (Luhn checksum)	luhn($number)	Returns true if the number passes the Luhn checksum test
📦 Import the support function	use Regexp::Common::_support qw /luhn/;	Loads the luhn subroutine into the current namespace

📖 SYNOPSIS

use Regexp::Common::_support qw /luhn/;

luhn ($number)    # Returns true/false.

📝 DESCRIPTION

This module contains some subroutines to be used by other Regexp::Common modules. It’s not intended to be used directly. Subroutines from the module may disappear without any notice, or their meaning or interface may change without notice.

🔢 luhn

This subroutine returns true if its argument passes the Luhn checksum test.

🔗 SEE ALSO

<http://www.webopedia.com/TERM/L/Luhn_formula.html>.

👤 AUTHOR

Abigail (*regexp-common AT abigail.be*).

🐛 BUGS AND IRRITATIONS

Bound to be plenty.

📜 LICENSE AND COPYRIGHT

This software is Copyright (c) 2001 – 2017, Damian Conway and Abigail.

This module is free software, and may be used under any of the following licenses:

• 1️⃣ The Perl Artistic License. See the file COPYRIGHT.AL.
• 2️⃣ The Perl Artistic License 2.0. See the file COPYRIGHT.AL2.
• 3️⃣ The BSD License. See the file COPYRIGHT.BSD.
• 4️⃣ The MIT License. See the file COPYRIGHT.MIT.

📛 NAME 🚀 Quick Reference 📖 SYNOPSIS 📝 DESCRIPTION 🔗 SEE ALSO 👤 AUTHOR 🐛 BUGS AND IRRITATIONS 📜 LICENSE AND COPYRIGHT