Learning Perl by Randal L. Schwartz, Tom Christiansen PDF

By Randal L. Schwartz, Tom Christiansen

ISBN-10: 1565922840

ISBN-13: 9781565922846

During this replace of a bestseller, best Perl running shoes train you to exploit the main common scripting language within the age of the area large net. With a foreword through Larry Wall, the author of Perl, this soft, conscientiously paced publication is the "official" consultant for either formal (classroom) and casual studying. it truly is now present for Perl model 5.004. studying Perl is a hands-on instructional designed to get you writing precious Perl scripts as speedy as attainable. routines (with whole suggestions) accompany each one bankruptcy. A long new bankruptcy during this version introduces you to CGI programming, whereas touching additionally at the use of library modules, references, and Perl's object-oriented constructs. Perl is a language for simply manipulating textual content, documents, and strategies. It comes common on such a lot UNIX systems and is on the market at no cost on all different very important working platforms. Perl technical aid is informally on hand -- usually inside of mins -- from a pool of specialists who video display a USENET newsgroup (comp.lang.perl.misc) with tens of hundreds of thousands of readers. Contents contain: a short educational walk via Perl fundamentals Systematic, topic-by-topic insurance of Perl's extensive functions plenty of short code examples Programming routines for every subject, with absolutely worked-out solutions the right way to execute process instructions out of your Perl application tips on how to deal with DBM databases utilizing Perl An advent to CGI programming for the net

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Name = ; The value of $name at this point has a terminating newline (Randal comes in as Randal\n). \n"; As with the shell, if we want a dollar sign rather than a scalar variable reference, we can precede the dollar sign with a backslash. /usr/bin/perl -w print "What is your name? 3 Adding Choices Now, let's say we have a special greeting for Randal, but want an ordinary greeting for anyone else. To do this, we need to compare the name that was entered with the string Randal, and if it's the same, do something special.

005 release. See the Perl FAQ for current status. 5 A Stroll Through Perl We begin our journey through Perl by taking a little stroll. This stroll presents a number of different features by hacking on a small application. The explanations here are extremely brief; each subject area is discussed in much greater detail later in this book. But this little stroll should give you a quick taste for the language, and you can decide if you really want to finish this book rather than read some more Usenet news or run off to the ski slopes.

Type in the example programs, and get them to work. ) Consult your local Perl guru if you need assistance. 5 A Stroll Through Perl Learning Perl Book Index Next: 2. Scalar Data 2. 2 Numbers 2. Scalar Data Contents: What Is Scalar Data? 1 What Is Scalar Data? A scalar is the simplest kind of data that Perl manipulates. 25e20) or a string of characters (like hello or the Gettysburg Address). Although you may think of numbers and strings as very different things, Perl uses them nearly interchangeably, so we'll describe them together.

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Learning Perl by Randal L. Schwartz, Tom Christiansen

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