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Perl Scripting
Introduction to Perl
Origin and Design Goals of Perl
Overview of Perl Features
Getting and Installing Perl
Accessing Documentation via perldoc
HTML-Format Reference Documentation
Perl Strengths and Limitations
Getting Started With Perl
Explicit Invocation of the Perl Interpreter
Running Perl on UNIX vs. Windows
Running Perl from the Command Line
Using Command Line Options
Using Debug Mode
Implicit Invocation of the Perl Interpreter
Running and Debugging Perl Scripts
Simple and Compound Statements
Fundamental Input Techniques
Using the print Function to Generate Standard Output
Using Variables
Scalar Variables
Introduction to Standard Data Types
Retrieving Standard Input Using the Default Variable $_
Reserved Scalar Variables
Assigning Strings and Numbers to Scalar Variables
Declaring Constants for Persistent Values
Using strict to Declare Variables
Pattern Matching in Perl
Regular Expressions in Perl
Using Pattern Matching Operators
Altering Data with Substitutions in Regular Expressions
Using Back references to Capture Data from Regular Expression Matching
Global and Case-Insensitive Matches
Altering Data with Character Translation
Using Variables in Patterns
Introduction to Fundamental Operators
Operator Precedence and Associativity
Using the Ternary Operator?: as a Shortcut for the if Statement
Using <FILEHANDLE> and <> File I/O Operators for Standard Input/Output
Using the Shortcut Operators +=, -=, *=, /=
String Manipulation
String Comparison
String Relations
Substring Manipulation
Using chomp and chop to Eliminate EOL Characters
Escape Characters for Formatting
String Manipulation Functions
Flow Control: Conditional Statements and Looping
Conditional Expressions and Logical Operators
if/else/elsif and unless
Constructing switch/case Equivalent Expressions
while Loops and do Loops
for and foreach Loops
Altering Program Flow with next, last, and redo
Trapping Errors with the eval Function
Terminating a Script with exit
Subroutines and Parameters
Simplifying Scripts with Subroutines
Defining and Calling a Subroutine
Passing Arguments by Value
Passing Arguments by Reference
Using return to Return a Value
Controlling Variable Scope using my and local Keywords
Arrays and Hashes
Defining Numeric Index Arrays
Defining Associative Arrays
Sorting Arrays with the sort Function
Adding and Deleting Items Using push, pop, shift, and unshift
Using slice, splice, and reverse
Other Array Manipulation Techniques
Looping through an Array
Merging Arrays
Associative Array Manipulation Functions
Introduction to Hashes
Preallocating Memory to Optimize Hash Performance
Packages and Modules
The Power of Packages and Modules
Introduction to Standard Modules
Where to Find Modules on the Internet
Installing a Module on UNIX or Windows
Creating Packages for Portability
Using Packages to Create Isolated Namespaces and to Separate Code
Creating Modules
Creating and Using Symbols in a Module
Using the Exporter to Export Symbols from a Perl Module
File and Directory I/O
Using open and close
File Open Modes
Reading Files into Arrays
Retrieving File Metadata
Built-in File Management Functions
Using print and write
File Test Operators
Directory Manipulation Using opendir, closedir, readdir, chdir, mkdir and rmdir
Input/Output Processing
Using Standard Input, Standard Output, and Standard Error
String and Field Processing
Using Streams and Pipes
Using die to Quit with an Error
Redirecting Standard Output and Standard Error to a File
Getting Standard Input from a File
Implementing Command Line Arguments
Reading Command Line Arguments from @ARGV
Read Files Explicitly with <ARGV> and Implicitly with <>
Manipulating Positional Parameters with push, pop, shift
Process Lists of Files
Processing Command Line Options with getopt or getopts
Analyzing Command Line Argument Values with the Getopt::Std and Getopt::Long Modules
Reserved Variables
Manipulating Identifiable Options Using GetOptions
Perl Report Formatting
Defining Report Formats
Justifying Text (Left, Right, Center)
Using write to Generate Reports
Defining here Documents for Report Customization
Creating Report Headers
Using Built-in Variables to Control Report Appearance
Printing Line Numbers on a Report
Formatting Multi-Line Output
Writing Formatted Text to a File
Debugging In Perl
Using the Built-in Perl Debugger
Starting the Debugger
Debugger Command Syntax
Checking for Script Syntax Errors
Solving Compile-Time Errors
Single-Stepping through a Script
Executing to Breakpoints
Setting Global Watches
Printing Values of Variables
Listing All Variables Used in the Script
Using Strict Error Checking
Quitting the Debugger
Life Cycle of a Reference
Hard References and Anonymous References
Use of References to Create Complex Data Structures
Creating Hard and Anonymous References
Modifying References
Dereferencing a Reference
The Arrow Operator ->
Building Complex Data Structures with Multi-Dimensional Arrays and Hashes
Accessing a Database Using Perl DBI
Database Access Life Cycle
Using DBI and DBD to Connect to a Database
Fundamental Data Storage and Retrieval Strategies
DBI Query Syntax
Using DBI Methods to Retrieve Database Information
Preparing Queries to be Executed
Creating Parameterized Queries
Executing Queries Using execute and do
Fetching the Result Set to Achieve Workable Data in the Perl Script
Extracting Data Using an Array
Extracting Data Using a Hash
Useful Utilities to Aid in Database Development
Using Other Modules to Access Databases on the Web
Extracting Data Using a Hash
Displaying Results from Queries in a Report
Releasing Database Resources
Perl Object Oriented Programming
Object Oriented Programming Concepts
Object Oriented Programming Terminology
How Perl Implements Object Oriented Programming
Modeling Software Objects Using Classes and Base Classes
Creating Classes, Objects, Methods and Attributes
Writing Constructors to Initialize of Objects
Using bless to Turn References into Objects
Creating Class Hierarchies through Inheritance
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