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LEARN ABOUT MOJAVE

parent

parent(3pm)						 Perl Programmers Reference Guide					       parent(3pm)

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 tell "parent" 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 that "require" 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::Custom
	 use parent -norequire, 'Plugin::Custom';

DIAGNOSTICS

       Class 'Foo' tried to inherit from itself
	   Attempting to inherit from yourself generates a warning.

	       package Foo;
	       use parent 'Foo';

HISTORY

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

CAVEATS

SEE ALSO

       base

AUTHORS AND CONTRIBUTORS

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

MAINTAINER

       Max Maischein " corion@cpan.org "

       Copyright (c) 2007-10 Max Maischein "<corion@cpan.org>" Based on the idea of "base.pm", which was introduced with Perl 5.004_04.

LICENSE

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

perl v5.18.2							    2014-01-06							       parent(3pm)

Programming