/ 
Tie-CheckVariables-0.02
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/ Tie::CheckVariables

NAME

Tie::CheckVariables - check/validate variables for their datatype

SYNOPSIS

use Tie::CheckVariables

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

untie $scalar;

DATATYPES

You can use these datatypes:

  • 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 DATATYPE

register

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

use Tie::CheckVariables;

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

BUGS

No known bugs, but "every" piece of code has bugs. If you find bugs, please use http://rt.cpan.org

AUTHOR

copyright 2006 Renee Baecker <module@renee-baecker.de>