- Taschenbuch: 366 Seiten
- Verlag: O'Reilly & Associates (15. Januar 1997)
- Sprache: Englisch
- ISBN-10: 1565922573
- ISBN-13: 978-1565922570
- Größe und/oder Gewicht: 17,8 x 2,2 x 23,3 cm
- Durchschnittliche Kundenbewertung: 41 Kundenrezensionen
- Amazon Bestseller-Rang: Nr. 282.704 in Fremdsprachige Bücher (Siehe Top 100 in Fremdsprachige Bücher)
- Komplettes Inhaltsverzeichnis ansehen
Mastering Regular Expressions: Powerful Techniques for PERL and other Tools (Nutshell Handbook) (Englisch) Taschenbuch – 15. Januar 1997
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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.
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. Alle Produktbeschreibungen
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This book is not a good end to end read, but it goes very well if you read some of the beginning material and then read a page or three from time to time as you get a chance. I sometimes (only half jokingly) suggest to my students that they should replace their copy of Reader's Digest near their "thrones" with a copy of MRE. Then they can read about a new topic for 10 or 15 minutes and ponder it for the rest of the day, which, if you are new to the theory and reality of regular expressions, is about the perfect regimen.
Unfortunately, this book is also without equal when it comes to *poorly* presenting information.
The tables are unreadable -- visually impossible to decipher, cryptic, cluttered. Edward Tufte could use this as book as a prime example of how not to present information.
And it's a shame, because there's a wonderful book buried inside Mastering Regular Expressions.
If this book gets proper attention from an ORA editor, I could easily give it 5 stars. In its present form, it's nearly unusable -- 2 stars.
--Pat / firstname.lastname@example.org
Jeffrey Friedl would say that you're supposed to read it from cover-to-cover but I think that you can benefit by pulling it out in emergencies.
Anyway, I had to pick four O'Reilly titles to give away every month from and this book was the first that came to my mind.
Why doesn't this book get a 10? Because in a world with _Anna Karenina_, I don't think any computer trade book deserves a 10! END
Friedl's excellent book fills this void. In the introductory material, he covers what a regex is and how to use the regex language to do your own searches. The rest of the book, however, is aimed at programmers only, dealing with how various programming languages (such as Perl) implement regex. If all you want to do is use regex for searching text files or flagging Usenet articles, most of the book will not be useful to you. However, until someone comes out with a pocket manual of regex, Friedl's book is the only game in town.
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As a long-time UNIX hacker, I thought I knew regular expressions.Lesen Sie weiter