by Bob DuCharme December 03, 2003 XPath 1.0 has a special data type called Result Tree Fragments . For example, an xsl:variable element can store a single string, but it can also store an XML element with all the descendants and attributes you like. This structure is a Result Tree Fragment. (I try to avoid using the acronym because of my many unpleasant...   Read Article.

Mike Hall Once upon a time there was a reasonably popular web-based chat room called Star Trekker chat. I happened into this chat thanks to a friend and even though Star Trek fans were hardly my favourite group of people I found that for the most part people in there were friendly and fun. But when Star Trekker shut down, thanks to its Perl backend...   Read Article.

Tech Jobs Business Databases Graphics Metadata Mobile Programming Schemas Style Web Web Services Annotated XML What is XML? What is XSLT? What is XLink? What is XML Schema? What is RDF? What are Web Services? Manage Your Account Forgot Your Password? Search Article Archive FAQs XML-Deviant Style Matters XML Qamp;A Transforming XML Perl and XML XML...   Read Article.

by Jacek Artymiak 08/22/2002 Welcome back. In part 6 and part 7 we learned how to send logs over an ssh connection and how to make that connection more secure. We also did some math to find out how much storage space we'll need to keep old logs for analysis. Today we need to roll up our sleeves again, and do some coding in Perl, because the pflog...   Read Article.

Bertrand Potier Introduction CSS Stylesheets are a major improvement in the World Wide Web, allowing HTML to come back to its roots: a language to structure and publish content on the web, not to apply a visual formatting to that content. Unfortunately HTML and CSS have the same limitations: both are static languages! From Perl scripts to PHP, a lot...   Read Article.

05/16/2002 When Bryan Richard wrote me a few months ago to ask if I thought a Python magazine would make it, I told him it probably would, if it were a labor of love. I didn't think he would make much money off the venture, but it would sure be great to have something out there. Maybe it could take off the way The Perl Journal did. Bryan decided...   Read Article.

by Igor Dayen June 20, 2001 Introduction Table of Contents Oracle XML-SQL Utility (XSU) IBM DB2 XML Extender Microsoft SQL Server 2000 Sybase Adaptive Server Vendor Comparison An Alternative Strategy Related Articles Mapping DTDs to Databases Using XML and Relational Databases with Perl RAX: An XML Database API There are various ways to solve the problem...   Read Article.

Darrell Brogdon As most of us already know, PHP is the best language for developing dynamic web pages available today. Not many people are aware that it can be used as a shell scripting language as well. While PHP as a shell script isn't as robust as Bash or Perl it does have definite advantages, especially if you're like me and are more proficient...   Read Article.

by Chris Coleman 10/19/2001 True power in a programming language comes from its extensibility. A good programming language can be expanded and extended in ways the designer never could have imagined originally. If you have ever programmed in Perl, chances are you have heard of CPAN, the Comprehensive Perl Archive Network. As you know, it's an easy...   Read Article.

by Kip Hampton January 10, 2001 The problem: You want to take advantage of the power and simplicity that XML tools can offer, but you face a site full of aging HTML documents. The solution: Convert your documents to XHTML and put Perl and XML::XPath to work. Tidy Up The first step to use XML tools with your HTML-based site is to convert existing HTML...   Read Article.

by Reuven M. Lerner 08/16/2001 Like many programmers and system administrators, I like to know when something goes wrong with my web site, no matter how trivial the problem is. So when I moved my company's web server to mod_perl and HTML::Mason last year, one of the first things I did was write an automatic warning system to send me an e-mail message...   Read Article.

by DJ Adams , author of Programming Jabber 02/08/2002 Editor's Note--In an earlier article, Is Jabber's Chatbot the Command Line of the Future? , we took an introductory look at ChatBot, the Jabber bot written in Perl and a regular occupant in the quot;jdevquot; conference room on conference.jabber.org . Having presented ChatBot's standard...   Read Article.

by Gian-Paolo D. Musumeci , coauthor of System Performance Tuning, 2nd Edition 05/02/2002 In my last article I discussed the 307 Corporation's ethanol production-monitoring environment, and how a little bit of Perl and the Solaris kernel-tracing facility can give us meaningful information about the load placed on a disk subsystem. To recap, let's...   Read Article.

by Joe Johnston October 31, 2001 XML-RPC is a useful protocol for building cross-platform, client-server applications. Often XML-RPC is demonstrated with high-level interpreted languages like Perl and Python. In this article, Eric Kidd's XML-RPC C library is used to build a simple, yet powerful debugging client. Special care is taken to bring programmers...   Read Article.

by David E. Wheeler 02/07/2003 In part one of this series, I identified the lack of support for Mac OS X by the libapreq library (which includes the Apache::Request and Apache::Cookie Perl modules) as a reason to build your own Apache/ mod_perl server. Although the other issues I identified with Apple's default Apache installation remain, the libapreq...   Read Article.

Rodney Hampton Introduction Every ISP needs a log file analysis program. One of the best is the Webalizer, an open source product originally written in Perl and rewritten in C soon thereafter. It can parse both Common Log Format and Combined Log Format files at a blistering pace. One benchmark states that On a 200Mhz pentium machine, over 10,000 records...   Read Article.

by Kip Hampton July 10, 2002 Introduction A few months ago we briefly examined some of the command line utilities available to users of Perl and XML. This month we will continue in that vein by looking at the 300-pound gorilla of Perl/XML command line tools, Petr Pajas' intriguing XML::XSH . XML::XSH and the xsh executable provide a rich shell environment...   Read Article.

By Michael Frey November 8, 2001 Intended audience Introduction Challenges in maintaining state The early days of the Web PERL and C Methods of state maintenance URL-encoded variables Converting variables to paths Hidden form variables Magic cookies -- the preferred way User issues with cookies Automatic state maintenance in PHP A parlor trick Security...   Read Article.

by Bruce Stewart 01/30/2002 A Land of City States Lincoln Stein is one of the favorite personalities of both the Perl and Bioinformatics crowds, and his afternoon keynote at O'Reilly's Bioinformatics Technology Conference was predictably well attended and well received. Lincoln's talk was titled quot;Bioinformatics: Building a Nation from...   Read Article.

By W. Jason Gilmore Go to page: 1 2 Next As a longtime aficionado of scripting languages such as PHP, Perl, and Python, I'm kicking myself for only recently learning more about Ruby, an open source, purely object-oriented scripting language. Created by Yukihiro Matsumoto over a decade ago, the language has long been popular in Japan. But, lack of English...   Read Article.