Perl

Advanced Perl Programming
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By Sriram Srinivasan; ISBN 1-56592-220-4, 434 pages. First Edition, August 1997. (See the catalog page for this book.)

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Index
Symbols | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Table of Contents
Preface Chapter 1: DataReferences and Anonymous Storage Chapter 2: Implementing Complex Data Structures Chapter 3: Typeglobs and Symbol Tables Chapter 4: Subroutine References and Closures Chapter 5: Eval Chapter 6: Modules Chapter 7: Object-Oriented Programming Chapter 8: Object Orientation: The Next Few Steps Chapter 9: Tie Chapter 10: Persistence Chapter 11: Implementing Object Persistence Chapter 12: Networking with SocketsChapter 13: Networking: Implementing RPC Chapter 14: User Interfaces with Tk Chapter 15: GUI Example: Tetris Chapter 16: GUI Example: Man Page Viewer Chapter 17: Template-Driven Code Generation Chapter 18: Extending Perl:A First Course Chapter 19: Embedding Perl:The Easy Way Chapter 20: Perl Internals Appendix A: Tk Widget Reference Appendix B: Syntax Summary

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Preface

Next: Why Perl?

Preface
Contents: The Case for Scripting Why Perl? What Must I Know? The Book's Approach Conventions Resources Perl Resources We'd Like to Hear from You Acknowledgments Errors, like straws, upon the surface flow; He who would search for pearls must dive below. - John Dryden, All for Love,Prologue This book has two goals: to make you a Perl expert, and, at a broader level, to supplement your current arsenal of techniques and tools for crafting applications. It covers advanced features of the Perl language, teaches you how the perl interpreter works, and presents areas of modern computing technology such as networking, user interfaces, persistence, and code generation. You will notmerely dabble with language syntax or the APIs of different modules as you read this book. You will spend just as much time dealing with real-world issues such as avoiding deadlocks during remote procedure calls and switching smoothly between data storage using a flat file or a database. Along the way, you'll become comfortable with such Perl techniques as run-time evaluation, nested data structures,objects, and closures. This book expects you to know the essentials of Perl - a minimal subset, actually; you must be conversant with the basic data types (scalars, arrays, and hashes), regular expressions, subroutines, basic control structures (if, while, unless, for, foreach), file I/O, and standard variables such as @ARGV and $_. Should this not be the case, I recommend Randal Schwartz and TomChristiansen's excellent tutorial, Learning Perl, Second Edition. The book - in particular, this preface - substantiates two convictions of mine.

The first is that a two-language approach is most appropriate for tackling typical large-application projects: a scripting language (such as Perl, Visual Basic, Python, or Tcl) in conjunction with a systems programming language (C, C++, Java). Ascripting language has weak compile-time type checking, has high-level data structures (for instance, Perl's hash table is a fundamental type; C has no such thing), and does not typically have a separate compilation-linking phase. A systems programming language is typically closer to the operating system, has fine-grained data types (C has short, int, long, unsigned int, float, double, and so on,whereas Perl has a scalar data type), and is typically faster than interpreted languages. Perl spans the language spectrum to a considerable degree: It performs extremely well as a scripting language, yet gives you low-level access to operating system API, is much faster than Java (as this book goes to press), and can optionally be compiled. The distinction between scripting and systems programming...