Mastering Regular Expressions [Englisch] [Taschenbuch]

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! -- Dieser Text bezieht sich auf eine vergriffene oder nicht verfügbare Ausgabe dieses Titels.

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. -- Dieser Text bezieht sich auf eine vergriffene oder nicht verfügbare Ausgabe dieses Titels.

"Indispensable for text processing wizards and regex newcomers alike." - Paul Hudson, Linux Format, February 2007 "In addition to the sheer volume of information, one thing that sets this book apart is that the author uses "real-world" rather than contrived examples. A few of the examples were situations that I have yet to come across, but many were either "been there, done that" or things that I had to go out and try." - James Mohr, Linux Magazine, April 2007

Regular expressions are an extremely powerful tool for manipulating text and data. They have spread like wildfire in recent years, now offered as standard features in Perl, Java, VB.NET and C# (and any language using the .NET Framework), PHP, Python, Ruby, Tcl, MySQL, awk, Emacs, and many other popular tools and languages.

If you don't use regular expressions 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.

In spite their wide availability, flexibility, and unparalleled power, regular expressions are frequently underutilized. Regular expressions allow you to code complex and subtle text processing that you never imagined could be automated. Regular expressions can save you time and aggravation. They can be used to craft elegant solutions to a wide range of problems.

A command of regular expressions is an invaluable skill. Yet what is power in the hands of an expert can be fraught with peril for the unwary. Mastering Regular Expressions will help you navigate the minefield to becoming an expert. Once you've mastered regular expressions, they'll become an invaluable part of your toolkit. You will wonder how you ever got by without them.

Mastering Regular Expressions, Second Edition has been thoroughly updated to include all the new features of Perl 5.8, as well as several other languages, including Java, VB.NET, C#, Python, JavaScript, Tcl, and Ruby. Written in the lucid, entertaining tone that made a complex, dry topic crystal-clear to thousands of programmers, and sprinkled with solutions to complex real-world problems, Mastering Regular Expressions offers a wealth information that you can put to immediate use.

Topics include: A comparison of features among different versions of many languages and tools. - How the regular expression engine works. - Optimization (major savings available here!). - Matching just what you want, but not what you don't want. - Sections and chapters on individual languages. -- Dieser Text bezieht sich auf eine vergriffene oder nicht verfügbare Ausgabe dieses Titels.

Regular expressions are an extremely powerful tool for manipulating text and data. They are now standard features in a wide range of languages and popular tools, including Perl, Python, Ruby, Java, VB.NET and C# (and any language using the .NET Framework), PHP, and MySQL. If you don't use regular expressions 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. As this book shows, a command of regular expressions is an invaluable skill. Regular expressions allow you to code complex and subtle text processing that you never imagined could be automated. Regular expressions can save you time and aggravation. They can be used to craft elegant solutions to a wide range of problems. Once you've mastered regular expressions, they'll become an invaluable part of your toolkit. You will wonder how you ever got by without them. Yet, despite their wide availability, flexibility, and unparalleled power, regular expressions are frequently underutilized.

Yet, what is power in the hands of an expert can be fraught with peril for the unwary. "Mastering Regular Expressions" will help you navigate the minefield to becoming an expert and help you optimize your use of regular expressions. "Mastering Regular Expressions, Third Edition" now includes a full chapter devoted to PHP and its powerful and expressive suite of regular expression functions, in addition to enhanced PHP coverage in the central "core" chapters. Furthermore, this edition has been updated throughout to reflect advances in other languages, including expanded in-depth coverage of Sun's java.util.regex package, which has emerged as the standard Java regex implementation. Topics include: a comparison of features among different versions of many languages and tools; how the regular expression engine works; and optimization (major savings available here!). Matching just what you want, but not what you don't want, it contains sections and chapters on individual languages.

Written in the lucid, entertaining tone that makes a complex, dry topic become crystal-clear to programmers, and sprinkled with solutions to complex real-world problems, "Mastering Regular Expressions, Third Edition" offers a wealth information that you can put to immediate use.

For everyone from nubie to expert: control your data
My book is all about using regular expressions to access and modify text and data. If you use Perl, Python, Emacs, awk, vi, Tcl, grep, etc., you'll find immediate benefit. If you have access to these or other programs that provide regular expression support, you'll probably benefit even more, as the book will open up a whole new world of power to you.

The book's home page is:
http://enterprise.ic.gc.ca/~jfriedl/regex/

You'll find the introduction, table of contents, and index online, among other things (the errata is also there, but as of yet there are no major boofoos found).

The response from readers so far has been extremely gratifying. If you get a chance to read it, I'd love to hear your thoughts! -- Dieser Text bezieht sich auf eine vergriffene oder nicht verfügbare Ausgabe dieses Titels.

Jeffrey Friedl was raised in the countryside of Rootstown, Ohio, and had aspirations of being an astronomer until one day he noticed a TRS-80 Model I sitting unused in the corner of the chem lab (bristling with a full 16K of RAM, no less). He eventually began using Unix (and regular expressions) in 1980, and earned degrees in Computer Science from Kent (BS) and the University of New Hampshire (MS). He did kernel development for Omron Corporation in Kyoto, Japan for eight years before moving in 1997 to Silicon Valley to apply his regular-expression know-how to financial news and data for a little-known company called "Yahoo!" When faced with the daunting task of filling his copious free time, Jeffrey enjoys playing Ultimate Frisbee and basketball with friends at Yahoo!, programming his house, and feeding the squirrels and jays in his back yard. He also enjoys spending time with his wife Fumie, and preparing for the Fall 2002 release of their first "software project" together.