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This is a book on the widely used programming language, Perl. It includes both descriptions of the features of the language, and how they can be used to write useful programs. As is usually the case with books on programming, the examples are small and are designed to illustrate one or a few language capabilities. Larger, more complex programs often drown the features the book is trying to show, just by their size and structure. The goal of the book is to provide a clear and concise description of Perl for someone who has programmed in some other programming language and wants to learn to use Perl. In many ways, Perl is similar to other programming languages; in some other ways, it is very different. We point out, whenever it is relevant, the advantages Perl offers over alternative languages. Perl has been for some time the most widely used UNIX system administration language. It is now also the most popular scripting language for writing CGI.
A programmer's guide to creating faster, more robust, interactive Web pages using PerlScript. PerlScript is an emerging scripting language that lets UNIX programmers write easy code for powerful and hot new Microsoft technologies such as Active Server Pages (ASP). Like JavaScript or VBScript, PerlScript is a "lite" version of a full-fledged programming language. Both Perl and VBScript programmers will benefit from the move to PerlScript because it provides cost benefits, superior power, and speed. This book provides a no-filler tutorial on PerlScript with plenty of concise examples that focus on using Active Server Pages (ASP) objects, and ActiveX Data Objects (ADO). It gives programmers the exact syntax for methods, properties, setting properties, database programming, collections, and data retrieval. CD-ROM contains ActivePerl plus all examples and scripts from the book. This guide walks through ActivePerl installation and configuration.
Perl has evolved from its beginnings as an eclectic scripting tool for UNIX administrators into one of the most popular, influential, and widely-used computer languages in history. In this course, you will learn how to fully utilize the Perl programming language. Disk included. Designed for application programmers, system administrators, Web site authors, Webmasters, UNIX/NT users. Prerequisites: Perl Programming and Perl application development experience. Full comprehension of the extending and embedding material will require some C or C++ programming experience. Topics include: argv, export, inc, and ISA; data inheritance, data_sources, dbi_pass, DELETE, derived class, dlls, driver handle, dynaloader, dynamic SQL, embperl, errstr, eval, ErrorDialog, even handlers, Exporter, FETCH, file scope, FILEHANDLE, focusNext, gunzip, hashes, httpd, IO, Laryy Wall, lists, list context, loops, main::package, make install, make dist, make clean, Makefile.
This book covers complex techniques for managing production-ready Perl programs and explains methods for manipulating data and objects that may have looked like magic before. It gives you necessary background for dealing with networks, databases, and GUIs, and includes a discussion of internals to help you program more efficiently and embed Perl within C or C within Perl. Major topics include practical use of packages and classes (object-oriented programming OOP); complex data structures; persistence (e.g.. using a database); networking; graphical interfaces, using the Tk tookit; interaction with C language functions; embedding and extending the Perl interpreter; selected internals; use of references, trapping errors through eval operator, non-blocking I/O, and using ties to trigger actions when data is accessed. You will emerge from thsi book a better hacker, and proud master of Perl
More and more companies are using Perl as their language of choice for projects great and small in large part because of Perl's popularity among web CGI programmers. Perl's ability to quickly generate and manipulate text files, along with its flexibility in communicating with a variety of systems and platforms, make it indispensable. In many organizations, however, especially those with large-scale programming teams, Perl adopters still fight a daily battle for acceptance. Perl is perceived by the IT managers in these organizations as difficult to manage (because there's no one way to program), impossible to maintain (because deployment does not require compilation), prone to error (because its variables are weakly typed), and maybe even dangerous (because hackers use it). Applied Perl tackles these misperceptions through exploring cases where Perl is being applied inventively in the film industry, financial community, and Internet community.
Perl is the perfect language for achieving Automation in Windows because it combines a painless Visual Basic style of coding with Perl's strength as a scripting language for process communications. The new multitasking and networking approaches with 32-bit Windows require a radical departure from previous programming techniques. This book, dedicated to the use of Perl as a language to automate 32-bit Windows, shows how to control many Win32 systems processes without immediate user interaction. The author explains how to use Perl scripts to automate tasks such as processing complex documents and customizing interactions by making a program look different to different users. Also provided are Perl scripts that will permit network administrators to automate tedious Windows maintenance tasks that range from automating backups to running a Windows system remotely from the Web. Topics include: Win32 Perl cron utility; using SMTP e-mail with Win32 Perl.
Perl is an immensely popular scripting language that combines the best features of C, key UNIX utilities and a powerful use of regular expressions. It has a wide range of uses beyond simple text processing and is commonly used for web programming - creating and parsing CGI forms, validating HTML syntax and hyperlinks - as well as e-mail and Usenet news filtering. Perl is increasingly the system administrator's scripting language of choice and is used for file and directory manipulation, database access and a whole range of daily system operator chores. Text takes the reader from installation, through the core language elements (regular expressions, references, modules, and the like), and on to basic applied techniques. Also covers how to access and work with databases in Perl and write CGI scripts to generate Web pages. Perl 5.6 is used in all the examples, and a handy reference section is included.
Beginning Perl for Bioinformatics is designed to get you quickly over the Perl language barrier by approaching programming as an important new laboratory skill, revealing Perl programs and techniques that are immediately useful in the lab. Each chapter focuses on solving a particular bioinformatics problem or class of problems, starting with the simplest and increasing in complexity as the book progresses. Each chapter includes programming exercises and teaches bioinformatics by showing and modifying programs that deal with various kinds of practical biological problems. By the end of the book you'll have a solid understanding of Perl basics, a collection of programs for such tasks as parsing BLAST and GenBank, and the skills to take on more advanced bioinformatics programming. Some of the later chapters focus in greater detail on specific bioinformatics topics. Includes programming basics and working with DNA sequences and strings.
Now developers can learn how to write robust, secure, and efficient Common Gateway Interface programs for the Web. Ideal for DOS, UNIX, or Windows users since CGI is platform independent, the book contains an abundance of solutions to "real-world" problems, along with a helpful focus on CGI scripting. The CD-ROM includes source code and examples from the book. This book is one of the first books to provide comprehensive information on developing with CGI (Common Gateway Interface). It covers many of the aspects of CGI including, interactivity, performance, portability, and security. After reading this book, the reader will be able to write robust, secure, and efficient CGI programs. - Covers client/server programming, working with gateways, and using Netscape. Readers will master forms, image maps, dynamic displays, database manipulation, and animation. Also included is: Common Gateway Interface (CGI); HTML and Forms; and CGI Security.
CGI Programming 101: Programming Perl for the World Wide Web is a concise presentation of the key elements of Perl CGI, which makes it perfect for programmers who are under the gun. If you need to get up to speed on text strings, for example, you can read that chapter and be a pro within about 10 minutes. Form processing is addressed early on, followed by searching and sorting techniques, illustrations of how to use server-side includes (SSI), and other critical issues. In general, if you want to get the most out of this book, you'll be better off having some programming experience, be it in BASIC or C++. Topics covered include Perl variables, CGI environment variables, form processing, data file I/O, searching/sorting, server-side includes (SSI), random number generation, strings, date and time manipulation, HTTP cookies, e-mail processing, securing scripts, Perl modules, database programming, and custom Perl modules.
This book is a step-by-step tutorial of how to create, use, and maintain Common Gateway Interfaces (CGI). It describes effective ways of using CGI as an integral part of Web development. Adds interactivity and flexibility to the information that can be provided through your Web site. It provides numerous real-life examples of CGI scripts and the source code for downloading from the book's support site. This is another book in Sams series of 'Teach Yourself X in a Week'. It, like the others, assumes some basic computing knowledge and builds on this with the use of numerous examples. The topic in this case is two-fold, both teaching about Common Gateway Interface (CGI) programming, as well as teaching you Perl to achieve this. The reason Perl is chosen as the language for this book is that it is often used in the real world for CGI work, due to its excellent string handling capabilities and compact nature - the typical fodder of CGI programming.
CGI Programming with Perl shows how to use CGI to deliver dynamic content on your web site. Based on teh best-selling CGI Programming on the World Wide Web, this edition has been completely rewritten to demonstrate current techniques available with the CGI.pm module and the latest versions of Perl. The book starts by explaining how CGI and the underlying HTTP protocol work, and then move quickly into the important details of developing CGI programs. Topics include incorporating JavaScript for form validation; controlling browser caching; making CGI scripts secure in Perl; working with databases; creating simple search engines; maintaing state between multiple sessions; generating graphics dynamically; improving performance of your CGI scripts; and much more. CGI Programming with Perl is the perfect starting point for anyone who wants to program in CGI and already knows some Perl.
The Perl Multimedia Cyber Classroom delivers complete interactive Perl training that includes more than 3 hours of audio, hundreds of programming and interactive exercises, more than 100 complete Perl programs, full-text searching, hyperlinking, tips, tricks, and more. Perl By Example is a guide to Perl that starts with the basics of Perl scripting and carries you all the way to advanced networking and Web applications. Coverage starts with statements, variables, scalars, arrays, hashes, and printing. Understand Perl operators, expressions, control structures, and file handling. Next, learn how to modularize and package Perl scripts, work with objects in the Perl environment, interface with the surrounding system, and create sophisticated reports. Using extensive examples, learn how to use Perl on the Web and in advanced networking applications that utilize message queues, semaphores, and shared memory.
With this hands-on, interactive training course, you won't just learn Perl: you'll use it to create dynamic CGI applications for the Web, e-commerce, and beyond! Created by leading corporate trainers Deitel & Associates, this revolutionary course brings together the world's #1 interactive Perl training CD-ROM, The Perl Multimedia Cyber Classroom, and the outstanding introductory Perl textbook, Perl How to Program. You'll start with basic Perl syntax and control structures; then master CGI programming, the powerful Perl Database Interface, session tracking, cookies, advanced Web automation, security even XML! If you're ready to build robust, high-performance Perl/CGI Web applications, this course will help you get started now and gain true mastery faster than you ever thought possible! Build complete Web-based applications using Perl and CGI! Includes the best-selling, 900 page Perl introduction Perl How to Program.
With well over a million users, Perl is one of the most popular programming languages. There are many reasons for this, but among those cited by its most loyal adherents, Perl has more features than other languages and more publicly available utilities than all other programming languages combined. Simply knowing what's out there is a daunting task, which is why so much of Perl programming is a matter of lore passed down from experts to novices. Computer Science & Perl Programming: Best of The Perl Journal is the first of three volumes from the archives of The Perl Journal that O'Reilly has exclusive rights to distribute. This insightful volume covers: tips for beginners; regular expressions; data structures; networking; databases; software development processes; object-oriented programming; advanced Perl programming techniques. With articles on object-oriented programming, closures, buffering, parsing, and using other languages.
In Effective Perl Programming, Perl experts Joseph Hall and Randal Schwartz share programming solutions, techniques, programming pointers, rules of thumb, and the pitfalls to avoid, enabling you to make the most of Perl's power and capabilities. The authors will help you develop a knack for the right ways to do things. They show you how to solve problems with Perl, and how to debug and improve your Perl programs. Offering examples, they help you learn good Perl style. Geared for programmers who have already acquired Perl basics, the book will extend your skill range, providing the tactics and deeper understanding you need to create Perl programs that are more elegant, effective, and succinct.
Introduces the basic elements of computer programming using the context of the Perl language. Variables, loop control constructs, file input and output, regular expressions, references, nested data structures, string and list processing, modules, debugging, abstract data structures and object-oriented programming are covered. This is a complete introduction to programming using Perl, written so it's accessibler to those learning Perl as their first programming language. With examples ranging from useful utility to search the Perl FAQs to a web client for tracking and charting stock quotes to an object-oriented student grading system, this book offers you a practical, hands-on approach to learning programming the Perl way. Inside you will find: style and design issues and the software development cycle; Perl's data types, variables, operators, and control structures; Perl's regular expressions; references and nested data types; list manipulation.
An explanation of how to expand the functionality and usefulness of the Perl programming language, this guide delves into the complex issues of using real code examples from the Perl source. Detailed is how to use Perl from C programs, such as writing interfaces to C libraries, techniques on implementing Perl callbacks for C libraries, passing Perl hashes and arrays between Perl and C. Additionally, developers are provided with an API reference for the internal C interface to Perl and a reference on the typemap system. Sometimes programmers are required to go outside the core of the Perl programming language to C routines or libraries in order to get their task done. This work was written in order to help software writers relate Perl and C. Assuming that readers are knowledgeable in Perl, they explain how to embed C into programs. In addition they also address cases where Perl is not the best base language and explore the opposite case.
Games, Diversions, and Perl Culture is the third volume of The Best of the Perl Journal, compiled and re-edited by the original editor and publisher of The Perl Journal, Jon Orwant. The 47 articles included in this volume are simply some of the best Perl articles ever written on the subjects of games, diversions, and the unique culture of this close-knit community, by some of the best Perl authors and coders. Games, Diversions & Perl Culture focuses on entertaining topics that make Perl users such fanatics about the language. You'll find all of the playful features TPJ offered over the years, including the Obfuscated Perl Contests, Perl Quiz Shows, humor articles, and renowned one-line recipes. The book also contains a panoply of quirky applications of Perl, including genetic algorithms, home automation, music programming, and an entire section on natural language processing. This anthology is an unmatched compendium of Perl lore.
In this introduction to computational molecular biology, Rex Dwyer explains many basic computational problems and gives concise, working programs to solve them in the Perl programming language. With minimal prerequisites, he covers the biological background for each problem, develops a model for the solution, and then introduces the Perl concepts needed to implement the solution. The chapters discuss pairwise and multiple sequence alignment, fast database searches for homologous sequences, protein motif identification, genome rearrangement, physical mapping, phylogeny reconstruction, , sequence assembly, gene finding, and RNA secondary structure. Concrete examples and a step-by-step approach enable readers to grasp the computational and statistical methods. Combines intuitive derivations of most key algorithms, and thoughtful use of key references to illustrate solutions of main problems with a detailed example.
Perl users learn tools and techniques that can be used to create and manipulate graphics with the Perl programming language. Topics range from simple graphics recipes to the development and design of flexible graphics software. Between these two extremes are examples of more complex uses of selected modules, such as using graphics in Web applications, and more general techniques for dealing with graphics and graphics formats. Source code downloads and technical support from the authors are available on publisher's Web site. Topics range from simple graphics recipes to the development and design of flexible graphics software. Source code downloads and technical support from the authors are available on the publisher's Web site. Martien Verbruggen is a senior programmer and project leader for Commercial Dynamics. He wrote GIFgraph and its progenitor GD: Graph to be able to display graphs without external programs.
The Web is booming, the majority of CGI applications are coded in Perl. For this reason, there is a huge number of beginners and intermediate developers wanting to get to know Perl in general and Internet applications with Perl in particular. Learn Perl basics and get up to speed with Internet and Object Oriented programming with just one book. Packed with hints and tips, solutions and exercises, Perl Power! is the perfect jumpstart guide to the hottest features of the latest Perl release. Beginners and intermediate developers an use the intermediate developers can use the introductory chapter to get up and running with Perl 5 fast, and a tutorial on object-oriented programming will supplement knowledge and help to fully exploit the power of Perl. Since use of freely available modules dramatically accelerates the development of Perl applications, the book shows how to find the right module for common programming tasks.
The Ultimate Collection of Ready-to-Use Code and Expert Techniques for CGI/Perl. Create useful, dynamic Web pages and applications by matching the consistency of CGI with the efficiency of Perl. This powerful guide offers out-of-the-box applications you can install on your Web site, plus an in-depth examination of the object library for advanced exploration of functionality. Build information-rich relationships with users that include secure transfer of everything from names and passwords to targeted information in multi-tiered shopping carts. Topical organization will help you find what you need rapidly and begin transforming your Web site today. With this book you'll learn about: Information sharing techniques, including sessions; Data abstraction and management with DataSource Application objects; Web programming with existing database architectures; The scripts work easily with Oracle, Sybase, MySQL, and most relational databases.
Get ready to learn the most popular programming language of the Internet! Begin your journey into the world of Perl Friday evening as you install ActivePerl and create an HTML page. On Saturday you will cover the basic building blocks of Perl, Perl operators, statements and expressions. On Sunday, you will learn object-oriented programming and how to pull your earlier sessions together in a complete Perl game program. Wrap things up as you touch on advance Perl topics including security, XML integration, and using Perl with CGI. Explains the basics of the Perl programming language in a series of seven tutorials. The book introduces scalars, arrays, hashes, file handling, statements, expressions, and the fundamentals of object- oriented programming, then ties the concepts together in an example game program. The code samples are written on the Windows XP operating system. Quick reference guide teaches you the basics of the Perl programming.
Learning Perl is a hands-on tutorial designed to get you writing useful Perl scripts as quickly as possible. Exercises (with complete solutions) accompany each chapter. A lengthy new chapter in this edition introduces you to CGI programming, while touching also on the use of library modules, references, and Perl's object-oriented constructs. Contents include: A quick tutorial stroll through Perl basics, Systematic, topic-by-topic coverage of Perl's broad capabilities, Lots of brief code examples, Programming exercises for each topic, with fully worked-out answers, How to execute system commands from your Perl program, How to manage DBM databases using Perl, and An introduction to CGI programming for the Web. This release has been expanded to cover the 5.6 release of Perl and has been rewritten from the ground up.