PUBLIC MARKS from solrac with tags perl & programming

Python programmers shouldn't get too smug. While many people agree that Python is designed in a way that makes it a highly readable language, there can still be problems with legacy, untested Python code too. Porting legacy Perl to Python can be a daunting task. In this article, learn some of the theory behind dealing with legacy code, including what not to do.

This article explains the benefits and drawbacks of Amazon's Simple Storage Service (S3) and SimpleDB offerings when it comes to building a Web site. This visual tour explains the S3 and SimpleDB architectures and how to use them through practical examples; in this case, you'll use a Perl library to build a simple photo-sharing site.

Eclipse presents a wealth of capabilities for building tools for compiled languages like C and the Java programming language, but provides little support for scripting languages like Perl, Python, and PHP. For these and similar languages, the Eclipse Dynamic Languages Toolkit (DLTK) comes to the rescue. This tutorial Walks you through the process of building a DLTK-based IDE and provides sample code for each step.

Measure the total time of entry and verify the time between keystrokes to help authenticate a user regardless of the data being entered. Learn how to apply the open source tools xev and Perl in keystroke dynamics to measure the more-subtle characteristics of human-computer interaction. This article uses example code to demonstrate keystroke dynamics for enhancing the security of your applications in authentication and continuous data entry contexts.

The code as presented in the article will enable you to efficiently query structured LDAP data quickly by using Perl and a vector-space search engine to search and display records from your Lightweight Directory Access Protocol (LDAP) database, while compensating for typographical and spelling errors automatically.

This article describes techniques you can use to create new levels of usefulness in your dynamically generated charts with Perl and GD. Cook up some automatically generated graphs for your organizational meetings or live enterprise directory data. Annotate the charts with readable text that delivers more information than the standard pie chart. Using the power of GD and Perl, you can link various data and images together to create sophisticated charts that will help bring visual interest to your applications.

This article shows you how to convert an XML document using Perl into a tree of objects in memory. Most Perl programmers find this approach more natural, and it is indeed more convenient. It then introduces you to SAX and event-based parsing, an entirely different style of programming, one that turns out to be very rich, using the SAX pipeline.