Beginning Regular Expressions

Beginning Regular Expressions

4.0 1
by Andrew Watt
     
 

This book introduces the various parts of the construction of a regular expression pattern, explains what they mean, and walks you through working examples showing how they work and why they do what they do. By working through the examples, you will build your understanding of how to make regular expressions do what you want them to do and avoid creating regular

Overview

This book introduces the various parts of the construction of a regular expression pattern, explains what they mean, and walks you through working examples showing how they work and why they do what they do. By working through the examples, you will build your understanding of how to make regular expressions do what you want them to do and avoid creating regular expressions that don’t meet your intentions.
Beginning chapters introduce regular expressions and show you a method you can use to break down a text manipulation problem into component parts so that you can make an intelligent choice about constructing a regular expression pattern that matches what you want it to match and avoids matching unwanted text.
To solve more complex problems, you should set out a problem definition and progressively refine it to express it in English in a way that corresponds to a regular expression pattern that does what you want it to do.
The second part of the book devotes a chapter to each of several technologies available on the Windows platform. You are shown how to use each tool or language with regular expressions (for example, how to do a lookahead in Perl or create a named variable in C#).
Regular expressions can be useful in applications such as Microsoft Word, OpenOffice.org Writer, Microsoft Excel, and Microsoft Access. A chapter is devoted to each.
In addition, tools such as the little-known Windows findstr utility and the commercial PowerGrep tool each have a chapter showing how they can be used to solve text manipulation tasks that span multiple files.
The use of regular expressions in the MySQL and Microsoft SQL Server databases are also demonstrated.
Several programming languages have a chapter describing the metacharacters available for use in those languages together with demonstrations of how the objects or classes of that language can be used with regular expressions. The languages covered are VBScript, Javascript, Visual Basic .NET, C#, PHP, Java, and Perl.
XML is used increasingly to store textual data. The W3C XML Schema definition language can use regular expressions to automatically validate data in an XML document. W3C XML Schema has a chapter demonstrating how regular expressions can be used with the xs:pattern element.
Chapters 1 through 10 describe the component parts of regular expression patterns and show you what they do and how they can be used with a variety of text manipulation tools and languages. You should work through these chapters in order and build up your understanding of regular expressions.
The book then devotes a chapter to each of several text manipulation tools and programming languages. These chapters assume knowledge from Chapters 1 through 10, but you can dip into the tool-specific and language-specific chapters in any order you want.

Product Details

ISBN-13:
9780764574894
Publisher:
Wiley
Publication date:
02/04/2005
Pages:
768
Product dimensions:
9.25(w) x 7.50(h) x 1.51(d)

Meet the Author

Andrew Watt is an independent consultant and experienced author with an interest and expertise in XML and Web technologies. He has written and coauthored more than 10 books on Web development and XML, including XPath Essentials and XML Schema Essentials. He has been programming since 1984, moving to Web development technologies in 1994. He’s a well-known voice in several influential online technical communities and is a frequent contributor to many Web development specifications.

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Beginning Regular Expressions 4 out of 5 based on 0 ratings. 2 reviews.
Anonymous More than 1 year ago
This book includes "Beginning" in the title for a perfectly good reason. It is best intended for programmers who are new to the concepts of Regular Expressions. It provides a good breadth of exposure, using a variety of programming, and text editing tools. The tutorials and exercises are well documented, and consistent in their presentation. If you are looking for a specific language programming guide for regular expressions, this book will get you started. But does not provide a lot of depth. If you have a good understanding of text manipulation, some of the exercises will seem very basic (too simple).
Guest More than 1 year ago
Regular expressions are one of those useful concepts that programmers have reimplemented in each new, aspiring language or software package. There has always been an abiding need for a compact notation that lets skilled users (and programmers) denote what they are looking for, in a set of textual data. Watt brings a lot of this work together, so that you can concisely find what you might need. Also, the book shows that much of the notation is common across the many implementations. Plus, once you've mastered a few of these, learning another is easy. Your experience transfers well. Chapter 2 has a good summary of the rest of the book. It points to a comprehensive list of packages and languages that have regexp, and which are covered later in the book. The packages include the open source StarOffice, and Microsoft Word and Excel. While the languages include JavaScript, JScript, VBScript, VB.NET, C#, Java, PHP and Perl. The heft of the book lies in supporting these examples. But the basic ideas are very simple.