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Queue-Base-2.203
River stage two • 2 direct dependents • 10 total dependents
++
/ Queue::Base

NAME

Queue::Base - Simple OO style queue implementation.

VERSION

version 2.203

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

new [ELEMENTS]

Creates a new empty queue.

ELEMENTS is an array reference with elements the queue to be initialized with.

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.

copy_elem

Returns a copy (shallow) of the underlying array with the queue elements.

peek

Returns the value of the first element of the queue, wihtout removing it.

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.

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.

Email

You can email the author of this module at RUSSOZ at cpan.org asking for help with any problems you have.

Internet Relay Chat

You can get live help by using IRC ( Internet Relay Chat ). If you don't know what IRC is, please read this excellent guide: http://en.wikipedia.org/wiki/Internet_Relay_Chat. Please be courteous and patient when talking to us, as we might be busy or sleeping! You can join those networks/channels and get help:

  • irc.perl.org

    You can connect to the server at 'irc.perl.org' and join this channel: #sao-paulo.pm then talk to this person for help: russoz.

Bugs / Feature Requests

Please report any bugs or feature requests by email to bug-queue-base at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Queue-Base. You will be automatically notified of any progress on the request by the system.

Source Code

The code is open to the world, and available for you to hack on. Please feel free to browse it and play with it, or whatever. If you want to contribute patches, please send me a diff or prod me to pull from your repository :)

https://github.com/russoz/Queue-Base

  git clone https://github.com/russoz/Queue-Base

AUTHOR

Alexei Znamensky <russoz@cpan.org>

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.

BUGS AND LIMITATIONS

No bugs have been reported.

Please report any bugs or feature requests through the web interface at http://rt.cpan.org.

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.