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
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
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
tptest	Test program for the trainingprogram.pm class
transport.pm	Definition of a transport animal

Specialist books

Opentalk forum discussions related to this topic

A case of a missing file that is somehow refrenced
Standard Class

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

A Generic Class.
Where to look for modules.
Inheritance and hierarchy.
The Base class.
The derived class.
Special methods.
Imports and exports.
Exporting variables.
Importing variables.
Further notes on object orientation.
Extending our earlier generic example.
Summary.

Complete learning

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