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