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<html><head><title>What's New in This Edition (Programming Perl)</title><!-- STYLESHEET --><link rel="stylesheet" type="text/css" href="../style/style1.css"><!-- METADATA --><!--Dublin Core Metadata--><meta name="DC.Creator" content=""><meta name="DC.Date" content=""><meta name="DC.Format" content="text/xml" scheme="MIME"><meta name="DC.Generator" content="XSLT stylesheet, xt by James Clark"><meta name="DC.Identifier" content=""><meta name="DC.Language" content="en-US"><meta name="DC.Publisher" content="O'Reilly & Associates, Inc."><meta name="DC.Source" content="" scheme="ISBN"><meta name="DC.Subject.Keyword" content=""><meta name="DC.Title" content="What's New in This Edition"><meta name="DC.Type" content="Text.Monograph"></head><body><!-- START OF BODY --><!-- TOP BANNER --><img src="gifs/smbanner.gif" usemap="#banner-map" border="0" alt="Book Home"><map name="banner-map"><AREA SHAPE="RECT" COORDS="0,0,466,71" HREF="index.htm" ALT="Programming Perl"><AREA SHAPE="RECT" COORDS="467,0,514,18" HREF="jobjects/fsearch.htm" ALT="Search this book"></map><!-- TOP NAV BAR --><div class="navbar"><table width="515" border="0"><tr><td align="left" valign="top" width="172"><a href="ch00_01.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0"></a></td><td align="center" valign="top" width="171"><a href="ch00_01.htm">Preface</a></td><td align="right" valign="top" width="172"><a href="ch00_03.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0"></a></td></tr></table></div><hr width="515" align="left"><!-- SECTION BODY --><h2 class="sect1">0.2. What's New in This Edition</h2><p>Well, almost everything.</p><p>Even where we kept the good bits from the previous edition (and therewere quite a few good bits, we'll admit), we've heavily revised andreorganized the current edition with several goals in mind. First, wewanted to increase the accessibility of the book to people coming frombackgrounds other than computer science. We've made fewer assumptionsabout what the reader will know in advance. At the same time, we'vekept the exposition lively in the hope that people who are alreadyfamiliar with some of the material will not fall asleep reading it.</p><p>Second, we wanted to present the very latest developments in Perlitself. To that end, we have not been shy about presenting the currentstate of the work, even where we feel that it is still experimental.While the core of Perl has been rock solid for years, the pace ofdevelopment for some of the experimental extensions can be quite torridat times. We'll tell you honestly when we think the onlinedocumentation will be more reliable than what we have written here.Perl is a blue-collar language, so we're not afraid to call a spade ashovel.</p><p>Third, we wanted you to be able to find your way around in the bookmore easily, so we've broken this edition up into smaller, morecoherent chapters and reorganized them into meaningful parts. Here'show the new edition is laid out:</p><dl><dt><b><a href="part1.htm">Part 1, "Overview"</a></b></dt><dd><p>Getting started is always the hardest part. This part presents thefundamental ideas of Perl in an informal,curl-up-in-your-favorite-chair fashion. Not a full tutorial, it merelyoffers a quick jump-start, which may not serve everyone's need. See <a href="ch00_05.htm#ch00-sect-od">Section 0.5, "Offline Documentation"</a> for books that mightbetter suit your learning style.</p></dd><dt><b><a href="part2.htm">Part 2, "The Gory Details"</a></b></dt><dd><p>This part consists of an in-depth, no-holds-barred discussion of theguts of the language at every level of abstraction, from data types,variables, and regular expressions to subroutines, modules, andobjects. You'll gain a good sense of how the language works and,in the process, pick up a few hints on good software design.(And if you've never used a language with pattern matching, you're infor a special treat.)</p></dd><dt><b><a href="part3.htm">Part 3, "Perl as Technology"</a></b></dt><dd><p>You can do a lot with Perl all by itself, but this part will takeyou to a higher level of wizardry. Here you'll learn how to make Perljump through whatever hoops your computer sets up for it,from dealing with Unicode, interprocess communication, andmultithreading, through compiling, invoking, debugging, and profiling Perl,on up to writing your own external extensions in C or C++ orinterfaces to any existing API you feel like. Perl will be quite happyto talk to any interface on your computer, or for that matter, on anyother computer on the Internet, weather permitting.</p></dd><dt><b><a href="part4.htm">Part 4, "Perl as Culture"</a></b></dt><dd><p>Everyone understands that a culture must have a language, but the Perlcommunity has always understood that a language must have aculture. This part is where we view Perl programming as a human activity,embedded in the real world of people. We'll cover how you can improvethe way you deal with both good people and bad people. We'll alsodispense a great deal of advice on how you can become a better personyourself and on how to make your programs more useful to other people.</p></dd><dt><b><a href="part5.htm">Part 5, "Reference Material"</a></b></dt><dd><p>Here we've put together all the chapters in which you might want tolook something up alphabetically, from special variables andfunctions to standard modules and pragmas. The Glossary will beparticularly helpful to those who are unfamiliar with the jargon ofcomputer science. For example, if you don't know what the meaning of"pragma" is, you could look it up right now. (If you don't know whatthe meaning of "is" is, we can't help you with that.)</p></dd></dl><!-- BOTTOM NAV BAR --><hr width="515" align="left"><div class="navbar"><table width="515" border="0"><tr><td align="left" valign="top" width="172"><a href="ch00_01.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0"></a></td><td align="center" valign="top" width="171"><a href="index.htm"><img src="../gifs/txthome.gif" alt="Home" border="0"></a></td><td align="right" valign="top" width="172"><a href="ch00_03.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0"></a></td></tr><tr><td align="left" valign="top" width="172">0.1. The Pursuit of Happiness</td><td align="center" valign="top" width="171"><a href="index/index.htm"><img src="../gifs/index.gif" alt="Book Index" border="0"></a></td><td align="right" valign="top" width="172">0.3. The Standard Distribution</td></tr></table></div><hr width="515" align="left"><!-- LIBRARY NAV BAR --><img src="../gifs/smnavbar.gif" usemap="#library-map" border="0" alt="Library Navigation Links"><p><font size="-1"><a href="copyrght.htm">Copyright © 2001</a> O'Reilly & Associates. All rights reserved.</font></p><map name="library-map"> <area shape="rect" coords="2,-1,79,99" href="../index.htm"><area shape="rect" coords="84,1,157,108" href="../perlnut/index.htm"><area shape="rect" coords="162,2,248,125" href="../prog/index.htm"><area shape="rect" coords="253,2,326,130" href="../advprog/index.htm"><area shape="rect" coords="332,1,407,112" href="../cookbook/index.htm"><area shape="rect" coords="414,2,523,103" href="../sysadmin/index.htm"></map><!-- END OF BODY --></body></html>⌨️ 快捷键说明
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