The Art of Regular Expressions

The Art of Regular Expressions PDF

Author: Luca Wheeler

Publisher: Createspace Independent Publishing Platform

Published: 2016-11-27

Total Pages: 94

ISBN-13: 9781540656285

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A regular expression, regex or regexp (sometimes called a rational expression) is, in theoretical computer science and formal language theory, a sequence of characters that define a search pattern, mainly for use in pattern matching with strings, or using a string searching algorithm, i.e. "find and replace"-like operations. The concept arose in the 1950s, when the American mathematician Stephen Cole Kleene formalized the description of a regular language, and came into common use with the Unix text processing utilities ed, an editor, and grep, a filter. The various systems to specify regexes have evolved to provide both a basic and extended standard for the grammar and syntax; modern regexes heavily augment the standard. Regex processors are found in several search engines, search and replace dialogs of several word processors and text editors, and in the command lines of text processing utilities, such as sed and AWK. This updated and expanded second edition of Book provides a user-friendly introduction to the subject, Taking a clear structural framework, it guides the reader through the subject's core elements. A flowing writing style combines with the use of illustrations and diagrams throughout the text to ensure the reader understands even the most complex of concepts. This succinct and enlightening overview is a required reading for all those interested in the subject . We hope you find this book useful in shaping your future career & Business.

Mastering Python Regular Expressions

Mastering Python Regular Expressions PDF

Author: Félix López

Publisher: Packt Publishing Ltd

Published: 2014-02-21

Total Pages: 158

ISBN-13: 1783283165

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A short and straight to the point guide that explains the implementation of Regular Expressions in Python. This book is aimed at Python developers who want to learn how to leverage Regular Expressions in Python. Basic knowledge of Python is required for a better understanding.

Regular Expression Recipes

Regular Expression Recipes PDF

Author: Nathan A. Good

Publisher: Apress

Published: 2007-03-01

Total Pages: 322

ISBN-13: 1430204168

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*Discusses regular expressions in quick, easy manner (Friedl book is exhaustive, and other two books are superficial) *Teaches by example without exhaustive syntax explanation *Covers the major open source languages

Mastering Regular Expressions

Mastering Regular Expressions PDF

Author: Jeffrey E.F. Friedl

Publisher: "O'Reilly Media, Inc."

Published: 2006-08-08

Total Pages: 544

ISBN-13: 1449332536

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Regular expressions are an extremely powerful tool for manipulating text and data. They are now standard features in a wide range of languages and popular tools, including Perl, Python, Ruby, Java, VB.NET and C# (and any language using the .NET Framework), PHP, and MySQL. If you don't use regular expressions yet, you will discover in this book a whole new world of mastery over your data. If you already use them, you'll appreciate this book's unprecedented detail and breadth of coverage. If you think you know all you need to know about regularexpressions, this book is a stunning eye-opener. As this book shows, a command of regular expressions is an invaluable skill. Regular expressions allow you to code complex and subtle text processing that you never imagined could be automated. Regular expressions can save you time and aggravation. They can be used to craft elegant solutions to a wide range of problems. Once you've mastered regular expressions, they'll become an invaluable part of your toolkit. You will wonder how you ever got by without them. Yet despite their wide availability, flexibility, and unparalleled power, regular expressions are frequently underutilized. Yet what is power in the hands of an expert can be fraught with peril for the unwary. Mastering Regular Expressions will help you navigate the minefield to becoming an expert and help you optimize your use of regular expressions. Mastering Regular Expressions, Third Edition, now includes a full chapter devoted to PHP and its powerful and expressive suite of regular expression functions, in addition to enhanced PHP coverage in the central "core" chapters. Furthermore, this edition has been updated throughout to reflect advances in other languages, including expanded in-depth coverage of Sun's java.util.regex package, which has emerged as the standard Java regex implementation.Topics include: A comparison of features among different versions of many languages and tools How the regular expression engine works Optimization (major savings available here!) Matching just what you want, but not what you don't want Sections and chapters on individual languages Written in the lucid, entertaining tone that makes a complex, dry topic become crystal-clear to programmers, and sprinkled with solutions to complex real-world problems, Mastering Regular Expressions, Third Edition offers a wealth information that you can put to immediateuse. Reviews of this new edition and the second edition: "There isn't a better (or more useful) book available on regular expressions." --Zak Greant, Managing Director, eZ Systems "A real tour-de-force of a book which not only covers the mechanics of regexes in extraordinary detail but also talks about efficiency and the use of regexes in Perl, Java, and .NET...If you use regular expressions as part of your professional work (even if you already have a good book on whatever language you're programming in) I would strongly recommend this book to you." --Dr. Chris Brown, Linux Format "The author does an outstanding job leading the reader from regexnovice to master. The book is extremely easy to read and chock full ofuseful and relevant examples...Regular expressions are valuable toolsthat every developer should have in their toolbox. Mastering RegularExpressions is the definitive guide to the subject, and an outstandingresource that belongs on every programmer's bookshelf. Ten out of TenHorseshoes." --Jason Menard, Java Ranch

Regular Expressions Cookbook

Regular Expressions Cookbook PDF

Author: Jan Goyvaerts

Publisher: "O'Reilly Media, Inc."

Published: 2009-05-22

Total Pages: 510

ISBN-13: 0596520689

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"Regular Expressions Cookbook" provides 126 recipes written for today's most popular programming languages, including C#, Java, JavaScript, Perl, PHP, and Python.NET. Readers can save valuable time with this huge library of proven solutions to difficult, real-world problems.

Mastering Regular Expressions

Mastering Regular Expressions PDF

Author: Jeffrey E. F. Friedl

Publisher: "O'Reilly Media, Inc."

Published: 2002

Total Pages: 492

ISBN-13: 9780596002893

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Introduces regular expressions and how they are used, discussing topics including metacharacters, nomenclature, matching and modifying text, expression processing, benchmarking, optimizations, and loops.

Java Regular Expressions

Java Regular Expressions PDF

Author: Mehran Habibi

Publisher: Apress

Published: 2008-01-01

Total Pages: 265

ISBN-13: 1430207094

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Expert author Habibi offers a look at what regular expressions are and how to use the Java library to process them. His book uses plenty of examples to show typical and atypical uses of the library, thus becoming a powerful learning tool. For instance, comprehensive examples for each and every regex method and class are given, along with advice on their appropriate use and performance considerations.

Mastering Regular Expressions

Mastering Regular Expressions PDF

Author: Jeffrey Friedl

Publisher: "O'Reilly Media, Inc."

Published: 2006-08-08

Total Pages: 542

ISBN-13: 0596528124

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This updated third edition now includes a full chapter devoted to PHP and itspowerful and expressive suite of regular expression functions, in addition toenhanced PHP coverage in the central "core" chapters.

Regular Expressions Cookbook

Regular Expressions Cookbook PDF

Author: Jan Goyvaerts

Publisher: O'Reilly Media

Published: 2012-08-13

Total Pages: 612

ISBN-13: 1449327494

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Take the guesswork out of using regular expressions. With more than 140 practical recipes, this cookbook provides everything you need to solve a wide range of real-world problems. Novices will learn basic skills and tools, and programmers and experienced users will find a wealth of detail. Each recipe provides samples you can use right away. This revised edition covers the regular expression flavors used by C#, Java, JavaScript, Perl, PHP, Python, Ruby, and VB.NET. You’ll learn powerful new tricks, avoid flavor-specific gotchas, and save valuable time with this huge library of practical solutions. Learn regular expressions basics through a detailed tutorial Use code listings to implement regular expressions with your language of choice Understand how regular expressions differ from language to language Handle common user input with recipes for validation and formatting Find and manipulate words, special characters, and lines of text Detect integers, floating-point numbers, and other numerical formats Parse source code and process log files Use regular expressions in URLs, paths, and IP addresses Manipulate HTML, XML, and data exchange formats Discover little-known regular expression tricks and techniques