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Data Munging with Perl: Techniques for Data Recognition, Parsing, Transformation and Filtering

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Data Munging with Perl: Techniques for Data Recognition, Parsing, Transformation and Filtering (Paperback)

by David Cross (Author)

4.3 out of 5 stars See all reviews (6 customer reviews)

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Product details

Paperback: 300 pages
Publisher: Manning Publications; illustrated edition edition (14 Feb 2001)
Language English
ISBN-10: 1930110006
ISBN-13: 978-1930110007
Product Dimensions: 23.1 x 18.3 x 1.8 cm

Average Customer Review: 4.3 out of 5 stars See all reviews (6 customer reviews)

Amazon.co.uk Sales Rank: 720,625 in Books (See Bestsellers in Books)
Popular in this category:
#81 in Books > Computing & Internet > Programming > Languages > Perl

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Product Description

Dr. Dobb’s Journal

" . . . well written, informative, thought provoking . . . will be as relevant five years from now as it is today. . . . buy [one]."

Product Description

Your desktop dictionary may not include it, but 'munging' is a common term in the programmer’s world. Many computing tasks require taking data from one computer system, manipulating it in some way, and passing it to another. Munging can mean manipulating raw data to achieve a final form. It can mean parsing or filtering data, or the many steps required for data recognition. Or it can be something as simple as converting hours worked plus pay rates into a salary cheque.

This book shows you how to process data productively with Perl. It discusses general munging techniques and how to think about data munging problems. You will learn how to decouple the various stages of munging programs, how to design data structures, how to emulate the Unix filter model, etc. If you need to work with complex data formats it will teach you how to do that and also how to build your own tools to process these formats. The book includes detailed techniques for processing HTML and XML. And, it shows you how to build your own parsers to process data of arbitrary complexity.

If you are a programmer who munges data, this book will save you time. It will teach you systematic and powerful techniques using Perl. If you are not a Perl programmer, this book may just convince you to add Perl to your repertoire.

What’s inside:

Using CPAN modules like Number::Format, Date::Manip, Text::CSV_XS
Making your code concise using Perl’s special variables (like $/, $” and $_)
Building data parsers using Parse::RecDescent
Processing of HTML and XML

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	54% buy the item featured on this page: Data Munging with Perl: Techniques for Data Recognition, Parsing, Transformation and Filtering 4.3 out of 5 stars (6) �28.48
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Customer Reviews

6 Reviews

5 star:		(2)
4 star:		(4)
3 star:		(0)
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Average Customer Review

4.3 out of 5 stars (6 customer reviews)

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Most Helpful Customer Reviews

7 of 7 people found the following review helpful:

5.0 out of 5 stars Worth every cent!, 9 Feb 2001

By A Customer

I bought this book solely for the XML parsing section, it explained in four lines what other documentation couldn't in 100 lines. It turns out the other chapters are just as brilliant!

If you do _any_ data manipulation with Perl then GET this book, it explains what Perl data structures(or modules) to use with what data, and then how to use that data structure...

The author writes and thinks like a programmer, so programmers can ultimately understand the topics/concepts and not just cut-paste someone elses code.

I also recommend 'OO Perl' by Damian Conway (same publisher).

These two Manning books are the only other Non-O'Reilly books I own.

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6 of 6 people found the following review helpful:

5.0 out of 5 stars Solid Gold - Easy Parsing, 16 Mar 2001

By	Mr. Peter Corrigan (Ireland) - See all my reviews (REAL NAME)

This is a juicy, if slim book (283 pages incl index). It is worth its weight in gold, if like me, you are not a perl porter, but inhabit the fat end of the perl expertise pyramid. The author munges for a living, and it shows in a non-academic, on-the-money, practical book on converting, filtering and parsing data. This book adds value, even if like me, you have all the O'Reilly Perl books because (1) it is really easy to understand, (2) it gives a valuable conceptual overview, (3) it gives trench-proven tips, (4) and best of all, it shows you how to do it.

I too found the chapter on Parse::RecDecent easy to understand having struggled with Damian's TPJ article. But this book to get on your way to being an expert munger.

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4 of 4 people found the following review helpful:

4.0 out of 5 stars Very good 2-3 months after "Learning PERL", 4 Feb 2002

By A Customer

This is an excellent book if you have recently started PERL, have got beyond "Learning PERL" but have not got into some of the more advanced books. However, if you have been studying PERL for longer and have read around the subject then much of this book will be old news, and some of the topics are very much "tasters", not imparting sufficient information to use in anger.

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Most Recent Customer Reviews

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The quintessential Perl activity is data processing, particularly in a Unix environment, where output is piped into a script from some other program, transformed, and spat out... Read more

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4.0 out of 5 stars High quality slim volume
This book is well written, and quite informative. But it should not be read in isolation, as it does gloss over quite a lot so that it remains focused on the key topic "data... Read more

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