Regular expressions are a powerful tool for manipulating text and data. If you don't use them 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 regular expressions, this book is a stunning eye-opener. With regular expressions, you can save yourself time and aggravation while dealing with documents, mail messages, log files -- you name it -- any ...
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Regular expressions are a powerful tool for manipulating text and data. If you don't use them 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 regular expressions, this book is a stunning eye-opener. With regular expressions, you can save yourself time and aggravation while dealing with documents, mail messages, log files -- you name it -- any type of text or data. For example, regular expressions can play a vital role in constructing a World Wide Web CGI script, which can involve text and data of all sorts. Regular expressions are not a tool in and of themselves, but are included as part of a larger utility. The classic example is grep. These days, regular expressions can be found everywhere, such as in: Scripting languages (including Perl, Tcl, awk, and Python) Editors (including Emacs, vi, and Nisus Writer) Programming environments (including Delphi and Visual C++) Specialized tools (including lex, Expect, and sed) While many of these tools originated on UNIX, they are now available for a wide variety of platforms, including DOS/Windows and MacOS, so you can use them in your home environment. Additionally, many favorite programming languages offer regular-expression libraries, so you can include support for them in your own programs, and yes, even applets. There can be certain subtle, but valuable, ways to think when you're using regular expressions, and these can be taught. Jeffrey Friedl has spent years helping people on the Net understand and use regular expressions. In this book he leads you through the steps of knowing exactly how to craft a regular expression to get the job done. Regular expressions are not used in a vacuum. In this book, a variety of tools are examined and used in an extensive array of examples, with a major focus on Perl. Perl is extremely well endowed with rich and expressive regular expressions. Yet what is power in the hands of an expert can be fraught with peril for the unwary. This book will help you navigate the minefield to becoming an expert.
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LOTS of theory, may not be the best place to begin
If you're trying to learn REGEX, this book may not be the place to start. Friedl's book is generally recognized as *the* single most authoritative book on REGEX *theory*. But the book's excruciating and labyrinthine discussion of every possible detail of REGEX theory, including corner-cases, may simply overwhelm you.
I began with a much shorter book titled "Regular Expressions in 10 Minutes". That book, along with the regex101 online tool, enabled me to get started using REGEX. Only after I'd used that book to help me work and experiment with REGEX for a few months did "Mastering Regular Expressions" begin to make some sense.
If you really want to work with REGEX's most complex capabilities, "Mastering" will be a great complement to your other REGEX learning resources and tools. But unless you're a computer science major who learns by digesting a large body of theory before setting to work, this book might not be all that helpful, at least initially...
jed7
Oct 12, 2008
Good Tutorial
This is a complete and well ordered introduction to regular expressions. Recommended!