NAME Queue::Base - Simple OO style queue implementation. VERSION version 2.201 SYNOPSIS use Queue::Base; # construction my $queue = new Queue::Base; # or my $queue = new Queue::Base(\@elements); # add a new element to the queue $queue->add($element); # remove the next element from the queue if (! $queue->empty) { my $element = $queue->remove; } # or $element = $queue->remove; if (defined $element) { # do some processing here } # add/remove more than just one element $queue->add($elem1, $elem2 ...) # and @elements = $queue->remove(5); DESCRIPTION The Queue::Base is a simple implementation for queue structures using an OO interface. Provides basic functionality: nothing less - nothing more. METHODS Constructor new [ELEMENTS] Creates a new empty queue. ELEMENTS is an array reference with elements the queue to be initialized with. Methods add [LIST_OF_ELEMENTS] Adds the LIST OF ELEMENTS to the end of the queue. remove [NUMBER_OF_ELEMENTS] In scalar context it returns the first element from the queue. In array context it attempts to return NUMBER_OF_ELEMENTS requested; when NUMBER_OF_ELEMENTS is not given, it defaults to 1. remove_all Returns an array with all the elements in the queue, and clears the queue. size Returns the size of the queue. empty Returns whether the queue is empty, which means its size is 0. clear Removes all elements from the queue. CAVEATS The module works only with scalar values. If you want to use more complex structures (and there's a big change you want that) please use references, which in perl5 are basically scalars. AUTHOR Alexei Znamensky COPYRIGHT AND LICENSE This software is copyright (c) 2011 by Farkas Arpad, Alexei Znamensky. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. SUPPORT Perldoc You can find documentation for this module with the perldoc command. perldoc Queue::Base Websites The following websites have more information about this module, and may be of help to you. As always, in addition to those websites please use your favorite search engine to discover more resources. * Search CPAN * AnnoCPAN: Annotated CPAN documentation * CPAN Ratings * CPAN Forum * CPANTS Kwalitee * CPAN Testers Results * CPAN Testers Matrix BUGS AND LIMITATIONS No bugs have been reported. Please report any bugs or feature requests through the web interface at . AVAILABILITY The latest version of this module is available from the Comprehensive Perl Archive Network (CPAN). Visit to find a CPAN site near you, or see . The development version lives at and may be cloned from . Instead of sending patches, please fork this project using the standard git and github infrastructure. DISCLAIMER OF WARRANTY BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.