Test2::Util::ExternalMeta - Online Linux Manual PageSection : 3
Updated : 2022-03-05
Source : perl v5.34.0
Note : User Contributed Perl Documentation
NAMETest2::Util::ExternalMeta − Allow third party tools to safely attach meta−data to your instances.
DESCRIPTIONThis package lets you define a clear, and consistent way to allow third party tools to attach meta-data to your instances. If your object consumes this package, and imports its methods, then third party meta-data has a safe place to live.
SYNOPSIS package My::Object;
use strict;
use warnings;
use Test2::Util::ExternalMeta qw/meta get_meta set_meta delete_meta/;
...
Now to use it: my $inst = My::Object−>new;
$inst−>set_meta(foo => 'bar');
my $val = $inst−>get_meta('foo');
WHERE IS THE DATA STORED?This package assumes your instances are blessed hashrefs, it will not work if that is not true. It will store all meta-data in the _meta key on your objects hash. If your object makes use of the _meta key in its underlying hash, then there is a conflict and you cannot use this package.
EXPORTS$val = $obj−>meta($key) $val = $obj−>meta($key, $default) This will get the value for a specified meta $key. Normally this will return undef when there is no value for the $key, however you can specify a $default value to set when no value is already set. $val = $obj−>get_meta($key) This will get the value for a specified meta $key. This does not have the $default overhead that meta() does. $val = $obj−>delete_meta($key) This will remove the value of a specified meta $key. The old $val will be returned. $obj−>set_meta($key, $val) Set the value of a specified meta $key.
META-KEY RESTRICTIONSMeta keys must be defined, and must be true when used as a boolean. Keys may not be references. You are free to stringify a reference "$ref" for use as a key, but this package will not stringify it for you.
SOURCEThe source code repository for Test2 can be found at http://github.com/Test−More/test−more/.
MAINTAINERSChad Granum <exodist@cpan.org>
AUTHORSChad Granum <exodist@cpan.org>
COPYRIGHTCopyright 2020 Chad Granum <exodist@cpan.org>. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See http://dev.perl.org/licenses/ 0
Johanes Gumabo
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