Download Perl Cookbook (2nd Edition) by Tom Christiansen, Nathan Torkington PDF

By Tom Christiansen, Nathan Torkington

Discover a Perl programmer, and you'll discover a reproduction of Perl Cookbook within sight. Perl Cookbook is a accomplished choice of difficulties, strategies, and useful examples for somebody programming in Perl. The e-book comprises hundreds of thousands of conscientiously reviewed Perl "recipes" and millions of examples starting from short one-liners to accomplish applications.

The moment variation of Perl Cookbook has been totally up to date for Perl 5.8, with vast alterations for Unicode aid, I/O layers, mod_perl, and new applied sciences that experience emerged because the earlier variation of the booklet. Recipes were up to date to incorporate the newest modules. New recipes were additional to each bankruptcy of the publication, and a few chapters have virtually doubled in size.

Covered subject parts include:

Manipulating strings, numbers, dates, arrays, and hashes
Pattern matching and textual content substitutions
References, facts buildings, gadgets, and classes
Signals and exceptions
Screen addressing, menus, and graphical applications
Managing different processes
Writing safe scripts
Client-server programming
Internet purposes programming with mail, information, ftp, and telnet
CGI and mod_perl programming
Web programming

Since its first liberate in 1998, Perl Cookbook has earned its position within the libraries of significant Perl clients of all degrees of workmanship by means of delivering sensible solutions, code examples, and mini-tutorials addressing the demanding situations that programmers face. Now the second one variation of this bestselling publication is able to earn its position one of the ranks of favourite Perl books as well.

Whether you're a beginner or veteran Perl programmer, you'll locate Perl Cookbook , 2d version to be probably the most helpful books on Perl to be had. Its cozy dialogue sort and exact recognition to aspect disguise almost about any subject you'd need to know approximately. you will get by way of with no need this publication on your library, yet as soon as you've attempted many of the recipes, you won't are looking to.

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Additional info for Perl Cookbook (2nd Edition)

Sample text

Definedness is not the same as Boolean truth, though; to check whether a value is defined, use the defined function. Boolean truth has a specialized meaning, tested with operators such as && and || or in an if or while block’s test condition. Two defined strings are false: the empty string ("") and a string of length one containing the digit zero ("0"). , "false", 15, and \$x) are true. You might be surprised to learn that "0" is false, but this is due to Perl’s on-demand conversion between strings and numbers.

Here are pack and unpack in action: @ascii_character_numbers = unpack("C*", "sample"); print "@ascii_character_numbers\n"; 115 97 109 112 108 101 $word = pack("C*", @ascii_character_numbers); $word = pack("C*", 115, 97, 109, 112, 108, 101); print "$word\n"; sample # same Here’s how to convert from HAL to IBM: $hal = "HAL"; @byte = unpack("C*", $hal); foreach $val (@byte) { $val++; # add one to each byte value } $ibm = pack("C*", @byte); print "$ibm\n"; # prints "IBM" 14 | Chapter 1: Strings This is the Title of the Book, eMatter Edition Copyright © 2007 O’Reilly & Associates, Inc.

Richard Stevens; AddisonWesley (1992). TCP/IP Illustrated, by W. , Volumes I–III; Addison-Wesley (1992-1996). HTML: The Definitive Guide, by Chuck Musciano and Bill Kennedy; O’Reilly & Associates (Third Edition, 1998). pm, by Lincoln Stein; John Wiley & Sons (1997). Web Client Programming with Perl, by Clinton Wong; O’Reilly & Associates (1997). W. Burchfield; Oxford (Third Edition, 1996). Conventions Used in This Book Programming Conventions We give lots of examples, most of which are pieces of code that should go into a larger program.

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