Regex Quick Syntax Reference: Understanding and Using Regular Expressions
This quick guide to regular expressions is a condensed code and syntax reference for an important programming technique. It demonstrates regex syntax in a well-organized format that can be used as a handy reference, showing you how to execute regexes in many languages, including JavaScript, Python, Java, and C#.

The Regex Quick Syntax Reference features short, focused code examples that show you how to use regular expressions to validate user input, split strings, parse input, and match patterns. Utilizing regular expressions to deal with search/replace and filtering data for backend coding is also covered.

You won’t find any bloated samples, drawn out history lessons, or witty stories in this book. What you will find is a language reference that is concise and highly accessible. The book is packed with useful information and is a must-have for any programmer.

What You Will Learn

• Formulate an expression

• Work with arbitrary char classes, disjunctions, and operator precedence

• Execute regular expressions and visualize using finite state machines

• Deal with modifiers, including greedy and lazy loops

• Handle substring extraction from regex using Perl 6 capture groups, capture substrings, and reuse substrings

Who This Book Is For

If you have dealt with at least one programming language, chances are you know enough to understand regular expressions, and the examples in this book will help you develop proficiency.

1128933178
Regex Quick Syntax Reference: Understanding and Using Regular Expressions
This quick guide to regular expressions is a condensed code and syntax reference for an important programming technique. It demonstrates regex syntax in a well-organized format that can be used as a handy reference, showing you how to execute regexes in many languages, including JavaScript, Python, Java, and C#.

The Regex Quick Syntax Reference features short, focused code examples that show you how to use regular expressions to validate user input, split strings, parse input, and match patterns. Utilizing regular expressions to deal with search/replace and filtering data for backend coding is also covered.

You won’t find any bloated samples, drawn out history lessons, or witty stories in this book. What you will find is a language reference that is concise and highly accessible. The book is packed with useful information and is a must-have for any programmer.

What You Will Learn

• Formulate an expression

• Work with arbitrary char classes, disjunctions, and operator precedence

• Execute regular expressions and visualize using finite state machines

• Deal with modifiers, including greedy and lazy loops

• Handle substring extraction from regex using Perl 6 capture groups, capture substrings, and reuse substrings

Who This Book Is For

If you have dealt with at least one programming language, chances are you know enough to understand regular expressions, and the examples in this book will help you develop proficiency.

44.99 In Stock
Regex Quick Syntax Reference: Understanding and Using Regular Expressions

Regex Quick Syntax Reference: Understanding and Using Regular Expressions

by Zsolt Nagy
Regex Quick Syntax Reference: Understanding and Using Regular Expressions

Regex Quick Syntax Reference: Understanding and Using Regular Expressions

by Zsolt Nagy

Paperback(First Edition)

$44.99 
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Overview

This quick guide to regular expressions is a condensed code and syntax reference for an important programming technique. It demonstrates regex syntax in a well-organized format that can be used as a handy reference, showing you how to execute regexes in many languages, including JavaScript, Python, Java, and C#.

The Regex Quick Syntax Reference features short, focused code examples that show you how to use regular expressions to validate user input, split strings, parse input, and match patterns. Utilizing regular expressions to deal with search/replace and filtering data for backend coding is also covered.

You won’t find any bloated samples, drawn out history lessons, or witty stories in this book. What you will find is a language reference that is concise and highly accessible. The book is packed with useful information and is a must-have for any programmer.

What You Will Learn

• Formulate an expression

• Work with arbitrary char classes, disjunctions, and operator precedence

• Execute regular expressions and visualize using finite state machines

• Deal with modifiers, including greedy and lazy loops

• Handle substring extraction from regex using Perl 6 capture groups, capture substrings, and reuse substrings

Who This Book Is For

If you have dealt with at least one programming language, chances are you know enough to understand regular expressions, and the examples in this book will help you develop proficiency.


Product Details

ISBN-13: 9781484238752
Publisher: Apress
Publication date: 08/18/2018
Edition description: First Edition
Pages: 153
Product dimensions: 5.90(w) x 9.10(h) x 0.50(d)

About the Author

Zsolt Nagy is a web development team lead, mentor and software engineer living in Berlin, Germany. He programs with JavaScript, Perl and other open source web technologies. Zsolt is also experienced in using and teaching regular expressions using these technologies. He writes a blog about lessons learned while solving complex problems, experimenting with technology and teaching other people on how to improve their skills. As a software engineer, he continuously challenges himself to stick to the highest possible standards.

Table of Contents

1. An Introduction to Regular Expressions
2. Regex Syntax 101
3. Executing Regular Expressions
4. Visualizing Regex Execution using Finite State Machines
5. Repeat modifiers
6. Character Sets and Character Classes
7. Substring Extraction from Regular Expressions
8. Lookahead and Lookbehind
9. Maintaining Regular Expressions
10. Optimizing regular expressions
11. Parsing HTML Code and URL Query Strings with Regular Expressions
Afterword: This is not the end, but the beginning

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