In my last article I discussed the values in the Agile Manifesto and what they mean to mean. There are many practices that can be used to make yourself more agile. Short iterations, the planning game, pair programming, and refactoring are a few of the practices present in eXtreme programming. The practice of most value to me, and the practice that many recommend to use as a starting point, is Test Driven Development - TDD.

The computer science community has shown a woeful lack of interest in debugging, which given the huge economic cost of debugging is somewhat mysterious. However, there may be signs of "green shoots" in the desert landscape of debugging tools.

In my last article I set the scene for what I hope will be a series of provocative and informative articles. In the article I described the plight of Pete and his vain efforts to change development processes at his place of work.

Revision control is a critical part of any significant development project. Having secure full time access to your repository from wherever you are can be important. In some environments, such as open source projects, it's absolutely crucial to the functioning of the development team.

This final part of the series will step outside the domain of standard C and investigate a pattern for event-driven applications. The REACTOR pattern decouples different responsibilities and allows applications to demultiplex and dispatch events from potentially many clients.

This part of the series will highlight another principle for dependency management and illustrate how both of these principles may be realized in C using the OBSERVER pattern.