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This book is an introduction to the rudiments of Perl programming. It provides the general reader with an interest in language with the most usable and relevant aspects of Perl for writing programs that deal with language.Exposes the general reader with an interest in language to the most usable and relevant aspects of Perl for writing programs that deal with language.Contains simple examples and exercises that gradually introduce the reader to the essentials of good programming.Assumes no prior programming experience.Accompanied by exercises at the end of each chapter and offers all the code on the companion website: http://www.u.arizona.edu/~hammond

B> The Web Wizard's Guide to Perl and CGI teaches readers how to create Web sites that will have an audience coming back for more. From writing scripts to analyzing users' data, this book helps readers create well-designed, user-friendly Web sites. This book covers the following topics: elementary scripts, programming and Perl basics, the Perl/Web interface, advanced Perl statements, how to store data in arrays, how to use Perl to work with Patterns, and how to use multiple page forms that share data. It assumes no programming experience, and also acts as a handy reference. The Web Wizard Series from Addison-Wesley is a series of brief, introductory books written by instructors on Internet and Web programming topics of interest to anyone who wants to create web pages. Each book includes an easy-to-read, full-color design featuring plenty of hands-on examples and exercises, and is written in a concise and practical manner so readers can use the technologies in no time.

This book is about taking over Perl code, whether written by someone else or by yourself at an earlier time. Developers regularly estimate that they spend 60 to 80 percent of their time working with existing code. Many problems of code inheritance are common to all languages, but the nature of the language makes Perl especially tricky. The reason why is that Perl is similar to English - bursting with irregular verbs, consistent only when it's convenient, borrowing terms from other languages, and providing many ways to say the same thing. In fact, Perl developers have a motto with the abbreviation TMTOWTDI: There's More Than One Way To Do It. While this flexibility is one of the language's strengths, it also makes it extremely difficult when you are faced with an existing piece of code. There are millions of lines of Perl code being used all over the Web; much of it was built on an ad hoc basis, the creators never imagining that the code would still be in use months or years later. This book will be the resource all Perl programmers need to understand someone else's code, even when it's bad; repair it; convert it to a better style; upgrade it to the latest version of Perl; maintain it; and find and fix its bugs.

Historically, programming hasn't been considered a critical skill for biologists. But now, with access to vast amounts of biological data contained in public databases, programming skills are increasingly in strong demand in biology research and development. Perl, with its highly developed capacities in string handling, text processing, networking, and rapid prototyping, has emerged as the programming language of choice for biological data analysis.Mastering Perl for Bioinformatics covers the core Perl language and many of its module extensions, presenting them in the context of biological data and problems of pressing interest to the biological community. This book, along with Beginning Perl for Bioinformatics, forms a basic course in Perl programming. This second volume finishes the basic Perl tutorial material (references, complex data structures, object-oriented programming, use of modules--all presented in a biological context) and presents some advanced topics of considerable interest in bioinformatics.The range of topics covered in Mastering Perl for Bioinformatics prepares the reader for enduring and emerging developments in critical areas of bioinformatics programming such as:Gene finding String alignment Methods of data storage and retrieval (SML and databases) Modeling of networks (graphs and Petri nets) Graphics (Tk) Parallelization Interfacing with other programming languages Statistics (PDL) Protein structure determination Biological models of computation (DNA Computers) Biologists and computer scientists who have conquered the basics of Perl and are ready to move even further in their mastery of this versatile language will appreciate the author's well-balanced approach to applying Perl's analytical abilities to the field of bioinformatics. Full of practical examples and real-world biological problem solving, this book is a must for any reader wanting to move beyond beginner level Perl in bioinformatics.

Perl is a very powerful tool for Oracle database administrators, but too few DBAs realize how helpful Perl can be in managing, monitoring, and tuning Oracle databases. Whether you're responsible for Oracle9i, Oracle8i, or earlier databases, you'll find Perl an invaluable addition to your database administration arsenal.You don't need to be a Perl expert to use the excellent applications and scripts described in Perl for Oracle DBAs. The book explains what you need to know about Perl, provides a wealth of ready-to-use scripts developed especially for Oracle DBAs, and suggests many resources for further exploration. The book covers:The Perl language -- an introduction to Perl, its rich history and culture, and its extensive text processing and data transformation capabilities. The Perl/Oracle architecture -- Detailed information about Perl DBI, DBD::Oracle, the Oracle Call Interface (OCI), Oracle::OCI, extproc_perl, and mod_perl, the modules that allow Perl programs to communicate with Oracle databases. Perl applications for Oracle DBAs -- Profiles of the best Perl open source applications available for use and customization by Oracle DBAs: Perl/Tk, OraExplain, StatsView, Orac, DDL::Oracle, SchemaDiff, Senora, DBD::Chart, SchemaView-Plus, Oracletool, Karma, Embperl, and Mason. The Perl Database Administration (PDBA) Toolkit -- a comprehensive suite of specialized, ready-to-use scripts designed to help Oracle DBAs perform both routine and special-purpose administrative tasks: monitoring the Oracle alert log and databases, creating and managing Oracle user accounts, maintaining indexes and extents, extracting DDL and data, troubleshooting and tuning database problems, and much more. The book also explains how Oracle DBAs and developers can extend the toolkit and solve their own database administration problems using Perl.

mod_perl is a unique piece of software that wholly integrates the power of Perl with the flexibility and stability of the Apache Web server. With mod_perl, developers can harness the power of the full Apache API and develop Web applications quickly and without sacrificing performance. The mod_perl Developer's Cookbook teaches programming with the mod_perl API by example. The book takes developers from the basics of mod_perl to the development advanced Web applications. Developers will learn tricks, solutions, and mod_perl idioms gleaned from the authors' experience as developers and expert users of mod_perl. Geoffrey Young is a frequent contributor to the mod_perl community and has written scores of mod_perl handlers, the most useful of which can be found on CPAN. Paul Lindner manages, designs, and implements mod_perl applications at Critical Path. He is a long-time Internet and open-source developer, and was one of the founders of the Internet Gopher at the University of Minnesota. Randy Kobes is a professor of physics at the University of Winnipeg who conducts research on chaos and fractals. He used mod_perl to establish a search engine for CPAN.

Perl/Tk is the marriage of the Tk graphical toolkit with Perl, the powerful programming language used primarily for system administration, web programming, and database manipulation. With Perl/Tk, you can build Perl programs with an attractive, intuitive GUI interface with all the power of Perl behind it.Mastering Perl/Tk is the "bible" of Perl/Tk: It's not only a great book for getting started, but the best reference for learning the techniques of experienced Perl/Tk programmers. The first half of the book contains the basics on how to use Perl/Tk, and then branches out into advanced applications with a series of extensive program examples. The result is a book accessible for novices, and invaluable for experienced programmers ready to learn the next step in the elegant and effective use of Perl/Tk. The book includes: An introduction to each of the basic Perl/Tk widgets and geometry managers A dissection of the MainLoop, including how to use callbacks and bindings effectively Coverage of the Tix widgets, an extended set of widgets that are a part of the standard Perl/Tk distribution Working with images in Perl/Tk, including bitmaps, pixmaps, photos, and how to compose a compound image type How to create custom mega-widgets in Perl/Tk, both composite and derived Handling interprocess communication with Perl/Tk, both with standard Unix utilities (pipes and sockets) and with the send command designed for direct communication between Tk applications Developing your own Tk widget in the C language Examples of web applications written with Perl/Tk and the LWP library The book also includes appendices on installing Perl/Tk, a complete quick-reference for each standard widget, and listings of all the extended examples in the book.Nancy Walsh is the author of Learning Perl/Tk, and Steve Lidie wrote the Perl/Tk Pocket Reference as well as a series of Perl/Tk articles in The Perl Journal. Together, they have written Mastering Perl/Tk to be the definitive guide to Perl/Tk.

This book presents Perl programming with a uniquely interdisciplinary perspective for the bioinformatics classroom. The co-authors are a professor of computer science and a professor of biology who collaborate in developing software for DNA sequence analysis. A specialty of the authors is encouraging interdisciplinary undergraduate research. The book has been tested in the classroom as a text for both biology and computer science majors. Benefiting from years of teaching experience in both computer science and biology, the authors use an exceptionally friendly and pedagogically sound introduction to Perl that emphasizes good programming practices throughout. Concepts include a rich introduction to working with strings and files of sequence data, control structures, subroutines, and data structures (e.g., arrays and hash tables). A particularly unique feature of the text is the early and repeated exposure to and use of regular expressions in sequence analysis. All examples in the book are applied to biological sequence analysis (DNA analysis, Protein analysis). The full-length book is appropriate for majors in either computer science or biology and especially relevant for new interdisciplinary courses involving students from multiple disciplines.

The Best Perl Programmers Use Modern Perl In 1987, Perl 1.0 changed the world. In the decades since then, the language has grown from a simple tool for system administration somewhere between shell scripting and C programming to a powerful, general purpose language steeped in a rich heritage. Even so, most Perl 5 programs in the world take far too little advantage of the language. You can write Perl 5 programs as if they were Perl 4 programs (or Perl 3 or 2 or 1), but programs written to take advantage of everything amazing the worldwide Perl 5 community has invented, polished, and discovered are shorter, faster, more powerful, and easier to maintain than their alternatives. They solve difficult problems with speed and elegance. They take advantage of the CPAN and its unparalleled library of reusable code. They get things done. This productivity can be yours, whether you've dabbled with Perl for a decade or someone just handed you this book and said "Fix this code by Friday." Modern Perl is suitable for programmers of every level. It's more than a Perl tutorial-only Modern Perl focuses on Perl 5.12 and 5.14, to demonstrate the latest and most effective time-saving features. Only Modern Perl explains how and why the language works, to let you unlock the full power of Perl. Hone your skills. Sharpen your knowledge of the tools and techniques that make Perl so effective. Master everything Perl has to offer. When you have to solve a problem now, reach for Perl. When you have to solve a problem right, reach for Modern Perl.

Provides readers with the methods, algorithms, and means to perform text mining tasksThis book is devoted to the fundamentals of text mining using Perl, an open-source programming tool that is freely available via the Internet (www.perl.org). It covers mining ideas from several perspectives--statistics, data mining, linguistics, and information retrieval--and provides readers with the means to successfully complete text mining tasks on their own.The book begins with an introduction to regular expressions, a text pattern methodology, and quantitative text summaries, all of which are fundamental tools of analyzing text. Then, it builds upon this foundation to explore:Probability and texts, including the bag-of-words modelInformation retrieval techniques such as the TF-IDF similarity measureConcordance lines and corpus linguisticsMultivariate techniques such as correlation, principal components analysis, and clusteringPerl modules, German, and permutation testsEach chapter is devoted to a single key topic, and the author carefully and thoughtfully introduces mathematical concepts as they arise, allowing readers to learn as they go without having to refer to additional books. The inclusion of numerous exercises and worked-out examples further complements the book's student-friendly format.Practical Text Mining with Perl is ideal as a textbook for undergraduate and graduate courses in text mining and as a reference for a variety of professionals who are interested in extracting information from text documents.