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Advanced Perl in PDF

Advanced Perl
3 days
50% Lecture/50% Lab
Advanced Level
Overview
The Practical Extraction Report Language (Perl) is a popular and portable scripting language used by anyone who needs to extract and manipulate data coming from text files, log files, databases, pipes etc. This course is a continuation of the Perl course. The student will be able to use and integrate Perl libraries and modules into his programs, use packages and modules from the standard Perl library, understand Perl references (pointers) for creating more complex data structures (hashes of hashes, multidimensional arrays, etc). Object oriented Perl will be introduced as well as dbm files (database management), and how to create user-friendly documentation.

Benefits
Upon completion of this course, students will be able to:
  • use packages, libraries, and pragmas
  • import and export modules
  • use references (pointers)
  • use Perl objects
  • use dbm files (database management)
  • use plain old documentation (pod)
  • CGI ( optional )

Intended Audience
This course is recommended for people with Perl experience who want to expand the power of Perl by understanding and using Perl libraries and modules, references, objects, and dbm libraries.

Prerequisites
Students need to be familiar with the basics of Perl programming (data types, decision making constructs, looping constructs, file I/0, subroutines) and how to use a text editor. The Perl course is the best prerequisite.

Training Approach
This is an intensive, interactive course, which is approximately 50% lecture and 50% lab. Questions are highly encouraged. On the final day, students are given access to a zipped file containing all of the solutions to the labs and the examples used throughout the notebook.

Course Outline

Day One

Module 1-- Packages
  • Review of Perl data types and subroutines
  • Packages
    • The symbol table
    • The strict pragma

Lab Exercise 1

 Module 2 -- Libraries and Modules
  • The Standard Perl Library
    • Including Perl library routines (.pl files) in a Perl script
    • The @INC array
    • Including your subroutines from another directory.
    • Perl5 modules (.pm files).
      • The use function
      • The Exporter Module and the @ISA array
      • Importing Modules from the Standard Perl Library and CPAN
      • How to Create your own Module

Lab Exercise 2

 Day Two

Module 3 -- References
  • Symbolic References (aliases and typeglob)
  • Hard References (Pointers)
    • Anonymous variables and references
      • Anonymous Arrays
      • Anonymous Hash
      • Nested Data Structures and Pointers
      • Anonymous subroutines
    • Multi-dimensional Arrays
  • Pointers and Subroutines
  • The ref function

Lab Exercise 3

 Module 4 -- Object Oriented Perl
  • What is OOP?
  • OOP Terms
  • Classes
    • The my function
    • Creating a Perl object with references
    • The bless function
  • Methods
    • Invoking Methods
    • Constructors and the new class method
    • Instance methods
    • Passing Arguments
    • Destructors and Garbage Collection

Lab Exercise 4

Day Three

Objects (continued)
  • OOP Review
  • Inheritance
    • The @ISA Array and Calling Methods
  • Derived Classes
Module 5 -- Perl Documentation
  • Another look at the Standard Perl Library
  • POD Files (Plain Old Documentation)
    • POD Commands
    • Translating POD Documentation into Text
    • Translating POD into HTML

Lab Exercise 5

 Module 6 -- Tied Variables and DBM Files
  • Tying Variables to a Class
    • The tie function
    • Predefined Methods for Tying
  • DBM Library Files
    • What are DBM Files?
    • Creating and Assigning Data to a Database
    • Fetching Data
    • Deleting Data

Lab Exercise 6

  For more information, contact:
Tom Wille
TM Associates, Inc.
503-656-4457
503-656-4775 fax

tw[at]tm-associates.com
© 2009, TM Associates, Inc.