NAME

parent - Establish an ISA relationship with base classes at compile time

SYNOPSIS

package Baz;use parent qw(Foo Bar);

DESCRIPTION

Allows you to both load one or more modules, while setting up inheritance from those modules at the same time. Mostly similar in effect to

package Baz;BEGIN {    require Foo;    require Bar;    push @ISA, qw(Foo Bar);}

By default, every base class needs to live in a file of its own. If you want to have a subclass and its parent class in the same file, you can tellparent not to load any modules by using the-norequire switch:

package Foo;sub exclaim { "I CAN HAS PERL" }package DoesNotLoadFooBar;use parent -norequire, 'Foo', 'Bar';# will not go looking for Foo.pm or Bar.pm

This is equivalent to the following code:

package Foo;sub exclaim { "I CAN HAS PERL" }package DoesNotLoadFooBar;push @DoesNotLoadFooBar::ISA, 'Foo', 'Bar';

This is also helpful for the case where a package lives within a differently named file:

package MyHash;use Tie::Hash;use parent -norequire, 'Tie::StdHash';

This is equivalent to the following code:

package MyHash;require Tie::Hash;push @ISA, 'Tie::StdHash';

If you want to load a subclass from a file thatrequire would not consider an eligible filename (that is, it does not end in either.pm or.pmc), use the following code:

package MySecondPlugin;require './plugins/custom.plugin'; # contains Plugin::Customuse parent -norequire, 'Plugin::Custom';

HISTORY

This module was forked frombase to remove the cruft that had accumulated in it.

CAVEATS

SEE ALSO

base

parent::versioned

A fork ofparent that provides version checking in parent class modules.

AUTHORS AND CONTRIBUTORS

Rafaël Garcia-Suarez, Bart Lateur, Max Maischein, Anno Siegel, Michael Schwern

MAINTAINER

Max Maischein corion@cpan.org

Copyright (c) 2007-2017 Max Maischein<corion@cpan.org> Based on the idea ofbase.pm, which was introduced with Perl 5.004_04.

LICENSE

This module is released under the same terms as Perl itself.