Perl - More Objects

More Objects - Perl module P218

How do we define Inheritance and overloading in Perl? What inherits from where? What happens if a method is missing? How do we make variables from a module available in a calling module?

This topic is presented on public course Perl for Larger Projects

Examples from our training material

angler	Program to demonstrate use of phisherman class
animal.pm	A framework for a generic base class
basket	Sample program - polymorphism in Perl OO
cafe	Test application to show use of exporter
coin.pm	Simple base class defining a coin
collect	Application that uses commememorative coin class
commemorative.pm	A class which uses simple inheritance
dish.pm	Illustation of Exporter and @EXPORT
fldo	Set up obects via a utility factory (main prog)
fruit.pm
horse.pm	BEGIN END DESTROY and import special methods
li2	the @INC list and the %INC hash
lookinc	Display the @INC list
offspring.pm	class offspring - an animal that need attention
pet.pm	a pet is an animal ... inheritance ...
phisherman.pm	A simple class in Perl
ptest	test harness for the program.pm class
rider	Application that uses horse.pm
test_class_1	Test harness for class "animal"
test_class_2	Test harness for the various subclasses of animal
tharness	Perl program, calls 2 classes, polymorphism and interitance
tptest	Test program for the trainingprogram.pm class
transport.pm	Definition of a transport animal
visit.pm	Set up obects via a utility factory (classes prog)

Pictures

Object Oriented programming for larger projects

Background information

Some modules are available for download as a sample of our material or under an Open Training Notes License for free download from http://www.training-notes.co.uk.

Topics covered in this module

Where to look for modules.
Inheritance and hierarchy; base and derived classes.
Special methods BEGIN, END, DESTROY and import.
Export and Exporters.

Complete learning

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