[roch-pm] [Fwd: Perl.com Newsletter: Embperl (03/13/2001)]

Wed Mar 14 22:42:41 CST 2001

-------- Original Message --------
Subject: Perl.com Newsletter: Embperl (03/13/2001)
Date: Wed, 14 Mar 2001 17:14:51 -0800
From: Perl Newsletter <elists-admin at oreillynet.com>
To: "Perl Newsletter" <perl at paprika.oreillynet.com>

          www.perl.com update
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Greetings, perl.com subscribers.

This is Schuyler Erle, web hacker for the O'Reilly Network, and it
is my honor and pleasure to bring you the latest www.perl.com
newsletter. So, without further ado, here's what's new in the world
of Perl.

* Perl at large.

The big buzz in Perl today is a Slashdot post to the effect that a
couple of high school sophmores attracted the attention of their
school administrators, and eventually even the police, all thanks to
a little confusion over the difference between scalar and list
contexts in perl.

     # Scalar context assignment: Store the entire output of the well-known
     #     UNIX fortune(1) program.

     my $f   = `fortune`;

     ... is not the same as ...

     # List context assignment, with one element on the left side: Store
     #    *just the first line* of the output of fortune(1).

     my ($f) = `fortune`;

Apparently, the lad in question used the latter code to generate
random quotes on his webpage, rather than the former scala context
code, which is probably what he wanted. When school administrators
viewed the site, they got a page containing, among other things,
just the first line of a William Gibson quote mentioning smuggling
firearms, totally out of context and without attribution. The rest
of the story isn't hard to imagine, but you can read all about it at:

     http://slashdot.org/article.pl?sid=01/03/13/208259

The article concludes by quoting from the Camel 3: "You will be
miserable until you learn the difference between scalar and list
context." Yeah, no kidding.

* What's new on www.perl.com?

This week, www.perl.com introduces Neil Gunton with an article on
using Embperl to simplify web site construction and maintenance.
Embperl, as you may be aware, is a web application platform written
in perl, that's typically run in concert with Apache and mod_perl.
Gunton details the implementation and use of EmbperlObject to produce
reusable web page objects which can greatly aid the development of
modular web sites of all sizes.

Once again, and as always, Simon Cozens returns with his truly
smashing perl5-porters digest. This week, come on down, and listen as
Simon spins wild yarns of Plain Old Documentation issues, undocumented
CV flags, the mysterious sub x { sub {} } memory leak, and testing
features that even Schwern doesn't understand.

Until next week, noble Perl hackers! We now return you to your
regularly scheduled e-mail.

SDE

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Article: Creating Modular Web Pages With EmbPerl
http://www.perl.com/pub/2001/03/embperl.html?wwwrrr_20010313.txt
If you have ever wished for an "include" HTML tag to reuse large
chunks of HTML, you are in luck. Neil Gunton explains how
Embperl solves the problem.

Article: Writing GUI Applications in Perl/Tk
http://www.perl.com/pub/2001/03/gui.html?wwwrrr_20010313.txt
Nick Temple shows how to program a graphical Point-of-Sale
application in Perl, complete with credit card processing.

Article: DBIx::Recordset VS DBI
http://www.perl.com/pub/2001/02/dbix.html?wwwrrr_20010313.txt
Terrance Brannon explains why DBI is the standard database
interface for Perl but should not be the interface for most Perl
applications requiring database functionality.

Article: The e-smith Server and Gateway: a Perl Case Study
http://www.perl.com/pub/2001/02/esmith.html?wwwrrr_20010313.txt
Kirrily "Skud" Robert explains the Perl behind the web-based
administrator for the e-smith server.

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