Download PDF Mastering Regular Expressions: Powerful Techniques for Perl and Other Tools (Nutshell Handbooks)

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Mastering Regular Expressions: Powerful Techniques for Perl and Other Tools (Nutshell Handbooks)

Download PDF Mastering Regular Expressions: Powerful Techniques for Perl and Other Tools (Nutshell Handbooks)

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Amazon.com Review

Regular expressions are a central element of UNIX utilities like egrep and programming languages such as Perl. But whether you're a UNIX user or not, you can benefit from a better understanding of regular expressions since they work with applications ranging from validating data-entry fields to manipulating information in multimegabyte text files. Mastering Regular Expressions quickly covers the basics of regular-expression syntax, then delves into the mechanics of expression-processing, common pitfalls, performance issues, and implementation-specific differences. Written in an engaging style and sprinkled with solutions to complex real-world problems, Mastering Regular Expressions offers a wealth information that you can put to immediate use.

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From the Publisher

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. Perl, in particular, is very well represented throughout the book, with a major chapter dedicated entirely to it alone. 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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Product details

Series: Nutshell Handbooks

Paperback: 368 pages

Publisher: O'Reilly Media; 1 edition (January 11, 1997)

Language: English

ISBN-10: 1565922573

ISBN-13: 978-1565922570

Product Dimensions:

7 x 0.8 x 9.2 inches

Shipping Weight: 1.3 pounds (View shipping rates and policies)

Average Customer Review:

4.1 out of 5 stars

51 customer reviews

Amazon Best Sellers Rank:

#1,855,400 in Books (See Top 100 in Books)

If you are an experienced programmer, then you have undoubtedly heard of the power behind regular expressions. Unfortunately, even for seasoned developers, becoming very proficient in regular expressions is no trivial task... or is it? Sure most regular expressions look very arcane and are even harder to write, but luckily there is at least one good resource to help bend the learning curve. I am talking about Mastering Regular Expressions by Jeffrey Friedl. This book breaks down regex to such a trivial level that you can't help but learn how to harness the regex power. Jeff takes you step by step through regex land and holds your hand throughout the whole trip. Next thing you know, you will be crafting high quality regular expressions and you will learn how to truly harness such a powerful tool.Unfortunately in every programmers life there are mental blocks that keep us from truly progressing. For some it's pointers or OOP concepts and for others such as myself its regular expressions. This book took that mental block and smashed it, then it paved the way to regex land. Now I feel much better! HIGHLY recommended!

Mr. Friedl was, apparently, the right man in the right place at the right time to write this book. If you thought learning regex would be too daunting, then you need to think again. With wit, humor and brevity, Mastering Regular Expressions is just what it says it is: you will not just understand regex, but you will have a mastery over it and be able to wield it like the weapon it is. It's simply one of the most used, most useful and most misunderstood skills a programmer can have - especially if you do anything with text including form validation, file parsing, formatted output based on values, etc. Mr. Friedl takes the reader on a well-planned trip that touches on the history of regex, the different types of engines and flavors, the nuts and bolts, some language specific magic, pitfalls to avoid and some wonderful examples. He doesn't tie the user to any one programming language, but instead focuses on the concepts and uses a variety of examples in multiple languages emphasizing that the language itself is not important, but that the concepts and the knowledge of how each language implements regex IS. This is one of those books where you will find yourself asking "How did I ever get by without knowing this stuff???" Do yourself a favor and not only buy this, but really read it and prepare to be pleasantly surprised as this esoteric meta-language becomes your secret weapon for not only getting exactly the data you want and need but for world domination!

Still using as a reference in 2019when Google fails. Brings back memories to actually have to turn pages and read.

This provides good information, with examples on how to use the syntax. While I thought I understood enough of the basics to write some simple scripts, I realized I needed more and this was my answer.

Overwhelming detail makes it hard to use for any specific application and system. You have to sift through the text to find the application environment relevant to your problem. Even then, since the necessary detail is usually scattered across the text, it is hard to find allthat is necessary for one problem.

Okay, so maybe I'm no Archimedes, but this book suddenly illuminated the world of regular expressions for me. I'd toiled through three or four other books, some of them pretty good, without getting it.After just a few chapters of this one, I can finally say that I understand regular expressions and can use them to my advantage instead of just being vaguely aware that there is a better way to do what I've been trying to do.Don't wait, buy it now!

Regular expressions look nothing but regular, more often than not because of the idiosyncratic tool being employed. This book surveys the notation, presents techniques and gory details about the languages which support this notation.I was a casual user(mostly in scripts) before, but now have become more careful in regex construction.I found it a tad verbose, but I heartily recommend it for any programmer.

There's not much to say about this book, really; like any O'Reilly book, it distills a lot of useful information into a compact, useful book. Any serious perl programmer needs a solid understanding of regular expressions, and this is volume to get it from. The best endorsement I can give this bok is this: Unlike a lot of perl books, we don't share this one in my office- we all have our own copy.

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Mastering Regular Expressions: Powerful Techniques for Perl and Other Tools (Nutshell Handbooks) PDF