Perl - Creating your own Classes

Perl module P213

Creating your own Classes

Exercises, examples and other material relating to training module P213. This topic is presented on public course Perl for Larger Projects

Perl for Larger Projects - training course - Objects, huge data, SQL databases, XML, efficiency and other topics.

Perl for Larger Projects - Objects, huge data, SQL databases, XML, efficiency and other topics. This advanced course takes the Perl programmer through ...

http://www.wellho.net/course/plfull.html [course]

When to bless a Perl variable

Perl's bless function, which turns a reference into an instance of an object, it typically called up as the last action in a constructor method. On today's ...

http://www.wellho.net/mouth/246_When ... iable.html [short article]

Introduction to Object Oriented Programming

"Object Oriented Programming" is a whole new philosophy for programmers who have been writing short scripts for years, and it can be quite frightening ...

http://www.wellho.net/mouth/1925_Int ... mming.html [short article]

Object Oriented Programming in Perl - Course

Perl Review (module P251) Subroutines in Perl (module P209) More than Simple Lists and Hashes! (module P217) Object Orientation: Individual Objects (module ...

http://www.wellho.net/mouth/1435_Obj ... ourse.html [short article]

Answering ALL the delegate's Perl questions

During courses, questions arise. "I'll get back to that" could make people feel that I'm brushing something off ... except that I explain, early on, ...

http://www.wellho.net/mouth/975_Answ ... tions.html [short article]

Blessing in Perl / Member variable in Ruby

How do you decide what member variables you have in an object in Ruby? Well - in Perl, you bless a single hash (or, exceptionally, a list or a scaler), ...

http://www.wellho.net/mouth/983_Bles ... -Ruby.html [short article]

Object Orientation in Perl - First Steps

div class= introsubheads DEVELOPING TOWARDS OBJECT ORIENTATION IN PERL BR /div Perl 5 has, perhaps, the most flexible Object Oriented facilities of ...

http://www.wellho.net/solutions/perl-obj ... steps.html [longer article]

In Perl, you can define a class of objects in a module. All the standard Object Oriented facilities are available, and we start with constructors, destructors, instances and accessor methods.

This topic is presented on public course Perl for Larger Projects

Examples from our training material

bd1.pm	A simple class, using a scalar to store object information
bd2.pm	A simple class, using a list to store information about each object
bd3.pm	A simple class, storing each object in a hash
book.pm	A simple class with a constructor and 2 access methods
ce.pm	Object interface to call events
commute.pm	commute.pm - used in factory demo
journey	Call to factory class. See ramble.pm and commute.pm
peeps.pm	Definition of two classes and polymorphism
ramble.pm	A class that includes a factory method
roar	Sample program to use room.pm
room.pm	A simple class which uses a blessed hash
scemail	quick check of email address format
spammer	Using global matching to extract all matches
thing.pm	Generic class for use during exercises
ub2	A test program to use the "book" class
ub3	Another test program to use the book class
ubany.pl	Test program for ub1 ub2 and ub3 classes
usebook	Sample application, constructs and uses book objects
wheretogo	Example that uses commute.pm and ramble.pm

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

Resume -- using a class.
Background to instance variables.
Variables, addresses of variables, contents of variables.
A first class.
Structure of the class file.
The new method.
Other methods in the class.
Storing information using complex structures.
Writing applications that are independent of the class internals.
Using a scalar to store information within a class.
Using a list to store information within a class.
Using a hash to store information within a class.
Further capabilities of a hash.
The ability to provide generic set and get methods.
AUTOLOAD.
Summary.

Complete learning

If you are looking for a complete course and not just a information on a single subject, visit our Listing and schedule page.

Well House Consultants specialise in training courses in Python, Perl, PHP, and MySQL. We run Private Courses throughout the UK (and beyond for longer courses), and Public Courses at our training centre in Melksham, Wiltshire, England. It's surprisingly cost effective to come on our public courses - even if you live in a different country or continent to us.

We have a technical library of over 700 books on the subjects on which we teach. These books are available for reference at our training centre. Also available is the Opentalk Forum for discussion of technical questions.