Beginning Perl 3rd Edition

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Beginning Perl

(Expert's Voice in Open Source)

James Lee  (Author)

This is a book for those of us who believed that we didn't need to learn Perl, and now we know it is more ubiquitous than ever. Perl is extremely flexible and powerful, and it isn't afraid of Web 2.0 or the cloud. Originally touted as the duct tape of the Internet, Perl has since evolved into a multipurpose, multiplatform language present absolutely everywhere: heavy-duty web applications, the cloud, systems administration, natural language processing, and financial engineering. Beginning Perl, Third Edition provides valuable insight into Perl's role regarding all of these tasks and more.

Commencing with a comprehensive overview of language basics, you'll learn all about important concepts such as Perl's data types and control flow constructs. This material sets the stage for a discussion of more complex topics, such as writing custom functions, using regular expressions, and file input and output. Next, the book moves on to the advanced topics of object-oriented programming, modules, web programming, and database administration with Perl's powerful database interface module, DBI. The examples and code provided offer you all of the information you need to start writing your own powerful scripts to solve the problems listed above, and many more.

Whether you are a complete novice or an experienced programmer, Beginning Perl, Third Editionoffers an ideal guide to learning Perl.

Product Details

• Series: Expert's Voice in Open Source
• Paperback: 464 pages
• Publisher: Apress; 3rd ed. 2010 edition (April 12, 2010)
• Language: English
• ISBN-10: 1430227931
• ISBN-13: 978-1430227939
  

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关键词：Beginning Edition beginn dition editio Internet present systems afraid learn

Chapter 1 Summary

Congratulations! You now know how to find and install modules from the CPAN! In this chapter you learned about the CPAN, the world’s largest collection of open source code dedicated to a single programming language. You learned the cpan and cpanm clients, how to create a miniature CPAN mirror, and you installed your first module, File::Find::Rule.

WHAT YOU LEARNED IN THIS CHAPTER[td]

TOPIC	KEY CONCEPTS
CPAN	The world’s largest collection of open source code for a single language. This makes it very easy to find code you need rather than writing it yourself.
http://www.cpan.org	The website for the CPAN. Use this to search for modules that solve problems you face.
CPAN.pm	The original client program for downloading and installing CPAN modules
App::cpanminus	A new and excellent alternative to CPAN.pm. It is much less verbose than the origina CPAN client.
PPM	The CPAN client bundled with ActivePerl.
CPAN::Mini	How to create a local CPAN mirror. It’s useful when installing modules when you don’t have an internet connection.