Introducing Regular Expressions: Unraveling Regular Expressions, Step-by-Step

by Michael Fitzgerald

Overview

If you’re a programmer new to regular expressions, this easy-to-follow guide is a great place to start. You’ll learn the fundamentals step-by-step with the help of numerous examples, discovering first-hand how to match, extract, and transform text by matching specific words, characters, and patterns.

Regular expressions are an essential part of a programmer’s toolkit, available in various Unix utlilities as well as programming languages such as Perl, Java, JavaScript, and C#. When you’ve finished this book, you’ll be familiar with the most commonly used syntax in regular expressions, and you’ll understand how using them will save you considerable time.

• Discover what regular expressions are and how they work
• Learn many of the differences between regular expressions used with command-line tools and in various programming languages
• Apply simple methods for finding patterns in text, including digits, letters, Unicode characters, and string literals
• Learn how to use zero-width assertions and lookarounds
• Work with groups, backreferences, character classes, and quantifiers
• Use regular expressions to mark up plain text with HTML5

Product Details

ISBN-13:	9781449392680
Publisher:	O'Reilly Media, Incorporated
Publication date:	08/02/2012
Pages:	154
Product dimensions:	6.80(w) x 9.10(h) x 0.50(d)

About the Author

Michael Fitzgerald describes Ruby as "my favorite language so far" and is working regularly with Ruby and the Rails framework. He has written over 150 Ruby programs for testing and demonstration, and has been developing a library of sample Ruby code. He is the author of Learning XSLT and XML Hacks, and co-author on the XML Pocket Reference.

Table of Contents

• Preface
• Chapter 1: What Is a Regular Expression?
• Chapter 2: Simple Pattern Matching
• Chapter 3: Boundaries
• Chapter 4: Alternation, Groups, and Backreferences
• Chapter 5: Character Classes
• Chapter 6: Matching Unicode and Other Characters
• Chapter 7: Quantifiers
• Chapter 8: Lookarounds
• Chapter 9: Marking Up a Document with HTML
• Chapter 10: The End of the Beginning
• Regular Expression Reference
• Regular Expression Glossary
• Colophon