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Tie-CheckVariables-0.07
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/ Tie::CheckVariables

NAME

Tie::CheckVariables - check/validate variables for their data type

VERSION

version 0.07

SYNOPSIS

use Tie::CheckVariables;

tie my $scalar,'Tie::CheckVariables','integer';
$scalar = 88; # is ok
$scalar = 'test'; # is not ok, throws error

untie $scalar;

DATA TYPES

You can use these data types by default:

  • integer

  • float

  • string

WHAT TO DO WHEN CHECK FAILS

on_error

You can specify a subroutine that is invoked on error:

use Tie::CheckVariables;

Tie::CheckVariables->on_error(sub{print "ERROR!"});

tie my $scalar,'Tie::CheckVariables','integer';
$scalar = 'a'; # ERROR! is printed
untie $scalar;

USE YOUR OWN DATA TYPE

register

If the built-in data types aren't enough, you can extend this module with your own data types:

use Tie::CheckVariables;

Tie::CheckVariables->register('url','^http://');
tie my $test_url,'Tie::CheckVariables','url';
$test_url = 'http://www.perl.org';
untie $test_url;

USING Type::Tiny

Since the very first version of this module, a lot has happened. Moose, Moo and other very nice modules were developed. And sometimes later Type::Tiny was written.

So I added support for Types::Standard now ;-)

use Tie::CheckVariables;
use Types::Standard qw(Int);

tie my $test_int,'Tie::CheckVariables', Int;
$test_int = 112;
$test_int = 'Test'; # throws error
untie $test_url;

AUTHOR

Renee Baecker <reneeb@cpan.org>

COPYRIGHT AND LICENSE

This software is Copyright (c) 2006 by Renee Baecker.

This is free software, licensed under:

The Artistic License 2.0 (GPL Compatible)