Perl Programming

Course Length - 5 Days

Course Description

Perl has been described as C, awk, sed, and shell programming all wrapped into one language. In this intense, 5-day, hands-on programming course, you will learn how to take advantage of Perl's power through examples and extensive exercises. Arrays and hashes, I/O, regular expressions, subroutines, and complex data structures are covered in depth. The course also introduces object-oriented programming in Perl, as well as UNIX multi-tasking and Perl sockets programming.

Course Prerequisites

Fundamentals of UNIX.
Experience in a high-level programming language, such as C, C++, or Java, is strongly recommended.

Who Should Attend?

Programmers and system administrators.

Course Outline:

Overview of Perl
	What is Perl? Running Perl Programs Sample Program Another Sample Program Yet Another Example
Perl Variables
	Three Data Types Variable Names and Syntax Variable Naming Lists Scalar and List Contexts The Repetition Operator
Arrays and Hashes
	Arrays Array Functions The foreach Loop The @ARGV Array The grep Function Array Slices Hashes Hash Functions Scalar and List Contexts Revisited
Quoting and Interpolation
	String Literals Interpolation Array Substitution and Join Backslashes and Single Quotes Quotation Operators Command Substitution Here Documents
Operators
	Perl Operators Operators, Functions and Precedence File Test Operators Assignment Operator Notations The Range Operator
Flow Control
	Simple Statements Simple Statement Modifiers Compound Statements The next, last, and redo Statements The for Loop The foreach Loop
I/O: Input Operations and File I/O
	Overview of File I/O The open Function The Input Operator Default Input Operator The Print Function Reading Directories
Regular Expressions
	Pattern Matching Overview The Substitution Operator Regular Expressions Special Characters Quantifiers (*, +, ?, {}) Assertions (^, $, \b, \B)
Advanced Regular Expressions
	Substrings Substrings in List Context RE Special Variables RE Options Multi-line REs Substituting with an Expression Perl RE Extensions
Subroutines
	Overview of Subroutines Passing Arguments Private Variables Returning Values
References
	References Creating References Using References Passing References as Arguments to Subroutines Anonymous Composers The Symbol Table
Complex Data Structures
	Two-dimensional Arrays in Perl Anonymous Arrays and Anonymous Hashes Arrays of Arrays Arrays of References A Hash of Arrays A Hash of Hashes And So On...
Packages and Modules
	Packages BEGIN and END Routines require vs. use Modules The bless Function
Introduction to Object-Oriented Programming in Perl
	What is Object-Oriented? Why Use Object-Oriented Programming? Classes, Objects, and Methods in Perl Inheritance, the "is-a" Relationship Containment, the "has-a" Relationship Overloaded Operators Destructors
Binary Data Structures
	Variable-Length (Delimited) Fields Variable vs. Fixed Handling Binary Data The pack Function The unpack Function The read Function C Data Structures
Multitasking with Perl
	What are Single and Multitasking? UNIX Multitasking Concepts Process Creation with fork Program Loading with exec File Descriptor Inheritance How UNIX Opens Files One-Way Data Flow - Pipes Example Final Result - Page Viewing
Sockets Programming in Perl
	Clients and Servers Ports and Services Berkeley Sockets Data Structures of the Sockets API Socket System Calls Generic Client/Server Models A Client/ServerExample A Little Web Server
Appendix A - The Perl Distribution
	Where Can You Get Perl? How Do You Build Perl? What Gets Created and Installed? Differences Between Platforms
Appendix B - The Perl Debugger
	Overview of the Perl Debugger Debugger Commands Non-Debugger Commands Listing Lines Single Stepping Setting and Clearing Breakpoints Modifying the Debugger The -w and -D Flags

Perl Programming

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