This cookbook provides more than 100 recipes to help you crunch data and manipulate text with regular expressions. Every programmer can find uses for regular expressions, but their power doesn't come worry-free. Even seasoned users often suffer from poor performance, false positives, false negatives, or perplexing bugs. Regular Expressions Cookbook offers step-by-step instructions for some of the most common tasks involving this tool, with recipes for C#, Java, JavaScript, Perl, PHP, Python, Ruby, and VB.NET.

With this book, you will:

Understand the basics of regular expressions through a concise tutorial
Use regular expressions effectively in several programming and scripting languages
Learn how to validate and format input
Manage words, lines, special characters, and numerical values
Find solutions for using regular expressions in URLs, paths, markup, and data exchange
Learn the nuances of more advanced regex features
Understand how regular expressions' APIs, syntax, and behavior differ from language to language
Write better regular expressions for custom needs

Whether you're a novice or an experienced user, Regular Expressions Cookbook will help deepen your knowledge of this unique and irreplaceable tool. You'll learn powerful new tricks, avoid language-specific gotchas, and save valuable time with this huge library of proven solutions to difficult, real-world problems.

About the Authors

Jan Goyvaerts runs Just Great Software, where he designs and develops some of the most popular regular expression software. His products include RegexBuddy, the world's only regular expression editor that emulates the peculiarities of 15 regular expression flavors, and PowerGREP, the most feature-rich grep tool for Microsoft Windows.

Steven Levithan is a leading JavaScript regular expression expert and runs a popular regular expression centric blog. Expanding his knowledge of the regular expression flavor and library landscape has been one of his hobbies for the last several years.

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