NAME

Data::Libra - Generating unique and random values from a string.

SYNOPSIS

    use Data::Libra;

    # using default Libra
    my $libra = new Data::Libra();

    # scan your string
    my $values = $libra->scan('a string');
    print "VALUE: $values->{VALUE}\n"; # a random value from 0 to 100

or

    use Data::Libra;

    # create your Libra!
    my $love_fortune = new Data::Libra(
        salt   => 'necessary to cook well:-p',
        values => {COMPATIBILITY => [0, 100]},
    );

    # calculate your love compatibility number.
    my $result = $love_fortune->scan('Your Name' . 'GirlFriend\'s Name');
    print "$result->{COMPATIBILITY}%\n";

DESCRIPTION

Data::Libra generate random values from a string. If you scan the same strings, you will get the same values. It works like "Barcode Battler" or "Monster Rancher(Monster Farm)".

Methods

my $libra = new Data::Libra( ... );

Constructor of Data::Libra. All parameters have default values.

salt => $salt (DEFAULT: `hostname`)

set $salt that is used by random values generator. If a different salt is used, different values will be generated.

values => {KEY => [$min, $max], ...} (DEFAULT: {VALUE => [0, 100]}

set items that you want to get from scan() method. KEY will be contained in the result of scan(). The generated integer corresponding to KEY becomes within the range from $min to $max.

my $ref_values = $libra->scan($some_strings);

generate random values from $some_strings.

For example, if you set values param like this:

  my $libra = new Data::Libra(
      values => {KEY1 => [100, 1000], KEY2 => [1, 100]}
  );

The returned value is a hash reference like this:

  {
    KEY1 => 688,
    KEY2 => 36,
  }

"Libra" is a name of the magic in Final Fantasy by which scan status of monsters.

BUGS AND LIMITATIONS

No bugs have been reported.

AUTHOR

Masahiro Honma <hiratara@cpan.org>

SEE ALSO

Digest::MD5

LICENCE AND COPYRIGHT

Copyright (c) 2008, Masahiro Honma <hiratara@cpan.org>. All rights reserved.

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.

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.