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NAME

Scalar::Constant - lightweight constant scalars.

SYNOPSIS

  use Scalar::Constant
      PI => 3.1415926535,
      C  => 299_792_458,
      HI => 'hello world';

  print "pi is $PI, and c is $C m/s\n";  

  $PI = 0; # dies with "Modification of a read-only value attempted at"

DESCRIPTION

This module gives you a simple way to define constant scalars. Unlike the constants created with constant, these can be interpolated into strings and used as hash keys.

CONFIGURATION AND ENVIRONMENT

Scalar::Constant requires no configuration files or environment variables.

DEPENDENCIES

Scalar::Quote

INCOMPATIBILITIES

None reported.

BUGS AND LIMITATIONS

Only simple scalars i.e. numbers and strings are supported. Attempting to define a constant with a reference value will result in an exception (compilation will be aborted).

Please report any bugs or feature requests through the GitHub web interface at https://github.com/arunbear/perl5-scalar-constant/issues.

AUTHOR

Arun Prasaad <arunbear@cpan.org>

LICENCE AND COPYRIGHT

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.