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Mastering Regular Expressions (Nutshell Handbook) (Taschenbuch)

von Jeffrey Friedl (Autor)
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Produktinformation

  • Taschenbuch: 342 Seiten
  • Verlag: O'Reilly/VVA (15. Januar 1997)
  • Sprache: Englisch
  • ISBN-10: 1565922573
  • ISBN-13: 978-1565922570
  • Größe und/oder Gewicht: 23,1 x 18 x 2,5 cm
  • Durchschnittliche Kundenbewertung: 4.2 von 5 Sternen  Alle Rezensionen anzeigen (41 Kundenrezensionen)
  • Amazon.de Verkaufsrang: Nr. 308.222 in Englische Bücher (Die Bestseller Englische Bücher)

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  • Komplettes Inhaltsverzeichnis ansehen

Produktbeschreibungen

Amazon.co.uk

Regular expressions--it sounds fairly ordinary in a regular sort of way, so therefore it must be very simple and very straightforward, right? Not quite.

The simple name hides an incredible amount of power when handling textual data with scripting languages such as Perl, Python and awk and more and the programmer that can master regular expressions can master just about anything.

From the off it's necessary to congratulate author Jeffrey Friedl on doing a superb job of asking what can be a very complex subject and breaking it down into digestible chunks that almost anyone can understand.

From the basics of character and pattern matching through to the recognition of complex string patterns and multiple character replacements to "greedy" metacharacters and how to curb their appetite, this is about as comprehensive as it gets.

With a handful of latter chapters devoted to the differences between scripting languages and the way in which they deal with regular expressions and so many examples it'll make your eyes water there's something here for everyone.

So, if you can examine a string like this "(\\.|[^"\\])*" and know what it does and how it does it there's plenty of reference material in here for those odd moments when you need a refresher. If, however, you've no idea what the above means, and you need the ability to handle textual data, buy this book. Now!



Amazon.com

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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Kundenrezensionen

41 Rezensionen
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Durchschnittliche Kundenbewertung
4.2 von 5 Sternen (41 Kundenrezensionen)
 
 
 
 
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5 von 5 Kunden fanden die folgende Rezension hilfreich:
4.0 von 5 Sternen Will help you make sense of a daunting subject., 7. Juni 2000
This is a book about Regular Expressions 'for Perl and Other Tools' but really it's a book about Perl. Other tools are covered, but coverage is a bit woolly, so if you are reading it to get the low-down on Python's RegEx capabilities etc. this book won't get you far. I can't help that feel that if the book had just concentrated on Perl, rather than giving sketchy coverage of 'Other Tools', it could have been even better (and would have definitely got five starts). That said, the extra coverage (particularly the RegEx engine material) was very interesting and has turned out invaluable in practice.

If you are an absolute beginner to Perl or programming you will need another book(s) to get the most out of this one, but it is a gentle and thorough introduction that won't leave you scratching your head, which is a feat in itself considering the complexity of Regular Expressions.

This is an excellent book for getting the most out of Perl's RegEx capabilities, you will close the back cover feeling that you genuinely have Mastered the subject. It is without doubt the best book available on the subject, nicely written, with a friendly and un-patronising tone (grammatical errors aside), you can't really go wrong with this one.

There could have been some more useful real world examples/projects included, and the book could probably do with an overhaul (it was published in 97) to accommodate Perl 5.6 and other developments (O'Reilly are you listening?), but it is still the best out there.

If RegEx is a subject you need to get to grips with, this book is the solution.

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6 von 7 Kunden fanden die folgende Rezension hilfreich:
5.0 von 5 Sternen Accelerated Learning!, 3. Juli 2000
Von F. Stewart (Reston, VA USA) - Alle meine Rezensionen ansehen
(REAL NAME)   
Within two weeks after receiving Mr. Friedl's book, I was able to write a concise Perl regex (see below) to find arbitrarily complex bible citations (e.g., Is 1:4,27:6-10,65:1-66:1,5-15) in my bible study files. I'm not a programmer by trade or hobby, have no Perl background or any appreciable experience with regexes thru grep or similar tools (my background in data modeling using EBNF helped me grasp the regex concept). Mr. Friedl's orderly and thorough progression from simple to complex material allowed me to easily tailor my reading and "practicum" towards a specific problem, while learning a great deal about regexes (and Perl as well, although this is not a Perl book). Mr. Friedl's humor helped keep my interest, although that's purely a matter of taste. I strongly recommend this book if you're looking to go from 0-60 mph on regexes, both conceptually and practically, within a couple of weeks. If you're looking for "recipes," you'll be disappointed.

/$bk\s*($ver_rng+|$ch_rng+)+/g

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2 von 2 Kunden fanden die folgende Rezension hilfreich:
4.0 von 5 Sternen Masterfully written; bit of overkill for nonprogrammers, 23. Januar 2000
Von E. Uthman "Ed" (Houston, TX USA) - Alle meine Rezensionen ansehen
(REAL NAME)   
Whether you are searching text documents with BBedit or flagging Usenet articles with Newswatcher, learning to use regular expressions can make your life a lot easier. Regular expressions ("regex") are text strings that allow you to search for complex variations of words and phrases. For instance, with the simple regex "gr[ea]y" you can flag any instances of the words "gray" or "grey". While a lot of applications support regex, finding out how to use this powerful function can be very difficult. There is suprisingly little online documentation of regex.

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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Die neuesten Kundenrezensionen

5.0 von 5 Sternen Useful, enlightening, perhaps even entertaining
In my opinion, one of the two best books from O'Reilly during the 1990s (the other being the original 1991 "purple camel book"). Lesen Sie weiter...
Veröffentlicht am 26. Mai 2000 von joe_n_bloe

5.0 von 5 Sternen Excellent read for the beginning programmer
There's just a world of power at any user's fingertips, and it's regular expressions. For any task that involves anything with alphanumeric characters, there are few, if any,... Lesen Sie weiter...
Veröffentlicht am 4. Mai 2000 von Rob Chauncey

5.0 von 5 Sternen Understand Regexes
As somone else said, "If you're looking for a handy desktop reference this book is NOT it." But it doesn't claim to be. Lesen Sie weiter...
Veröffentlicht am 17. April 2000 von Grump

5.0 von 5 Sternen Serious regular expression magic for the hard-core hacker
This book was written with a thoroughness that is only possible when the author loves his subject.

As a long-time UNIX hacker, I thought I knew regular expressions. Lesen Sie weiter...

Veröffentlicht am 14. April 2000 von B. Hilton

3.0 von 5 Sternen not enough examples
A good general book on Reg Ex, but the basic problem is that its too broad. Since so many regular expression engines can be different it doesnt really spend enough time on any... Lesen Sie weiter...
Veröffentlicht am 11. April 2000 von Matthew MacGibbon

2.0 von 5 Sternen Appallingly chatty and unprofessional style.
The author's unamusing cuteness is a constant distraction. In the single brief section explaining NFA vs. Lesen Sie weiter...
Veröffentlicht am 6. April 2000 von Uriel Wittenberg

1.0 von 5 Sternen Never has so much been made of so little
If you're looking for a handy desktop reference this book is NOT it. When faced with a short-fused development schedule and needing to get up to speed with regexps rather quickly... Lesen Sie weiter...
Veröffentlicht am 23. März 2000 von Jim Stapleton

2.0 von 5 Sternen Not a book for easy answers and examples
A friend let me borrow this book while I was writing a Perl program to capture system statistics. I was hoping to have something with easy explanations and lots of examples,... Lesen Sie weiter...
Veröffentlicht am 9. März 2000 von Scott D. Mccrory

4.0 von 5 Sternen Language description..
Regular expressions look nothing but regular, more often than not because of the idiosyncratic tool being employed. Lesen Sie weiter...
Veröffentlicht am 26. Februar 2000 von Anantha K. Devarajan

5.0 von 5 Sternen This is a GREAT book
This is one of the best books I have read in a long time! It is packed and dense with information (plan on reading it at least twice). The examples are wonderful. Lesen Sie weiter...
Veröffentlicht am 16. Februar 2000 von Kennedy Clark

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