Recurrence tutorial

Martijn van Beers

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is included in Appendix B

An exception is made for the quoted email in appendix A. For that, the following licence applies:

This document and translations of it may be copied and furnished to others, and derivative works that comment on or otherwise explain it or assist in its implmentation may be prepared, copied, published and distributed, in whole or in part, without restriction of any kind, provided that the above copyright notice and this paragraph are included on all such copies and derivative works. However, this document itself may not be modified in any way, such as by removing the copyright notice or references to the Internet Society or other Internet organizations, except as needed for the purpose of developing Internet standards in which case the procedures for copyrights defined in the Internet Standards process must be followed, or as required to translate it into languages other than English.

The limited permissions granted above are perpetual and will not be revoked by the Internet Society or its successors or assigns.

This document and the information contained herein is provided on an "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE."

Revision History
Revision 0.117-01-2003mvb
Initial release
Revision 0.230-01-2003mvb
Add date vs. date-time discussion

Abstract

This document is a short tutorial on iCalendar recurrence, and how to use this in your Perl programs.

Table of Contents

1. things that happen again and again
1.1. How to construct recurrence
2. Working with recurrence
2.1. Date::Set
2.2. ICal::RecurrenceParser
2.3. ICal::PeriodParser
2.4. Tipi::Widget::RecurEditor
A. Recurrence discussions on ietf-calendar
A.1. Proposed changes
A.1.1. Mixing DATE and DATETIME
B. GNU Free Documentation License