Archive for January, 2008

Episode 84: Dick Gabriel on Lisp

Filed in Episodes by on January 22, 2008 26 Comments
Episode 84: Dick Gabriel on Lisp

In this Episode we’re talking with Dick Gabriel on Lisp. We started by looking at artificial intelligence as the historic context of Lisp, the goals AI tried to reach, and how Lisp was supposed to help reach those.

We then discussed the language itself, starting with the Data As Program / Program As Data concept that is a foundation for Lisp. Then we discussed adding a meta-circular interpreter, programming as language development, and the blurred boundary between language and frameworks (because everything uses the same syntax). We then talked about Lisp’s type system and the importance of macros to extend the language.

The next section concerned CLOS, the Common Lisp Object System and its important concepts: generic functions, multimethods, mixins, and method combination. We also briefly looked at the meta-object protocol but agreed this is a topic for a separate episode. After a discussion about the various dialects of Lisp and Scheme, we concluded the Lisp discussion by explaining why Lisp did not really catch on (“AI Winter”) and Lisp’s role in today’s industry.

We ended the episode with a couple of details about Dick’s other life as a poet and his Poem a Day effort.

Make sure you listen till the end, where we have added a song about Lisp (courtesy of Prometheus Music.)

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Episode 83: Jeff DeLuca on Feature Driven Development

Filed in Episodes by on January 12, 2008 6 Comments
Episode 83: Jeff DeLuca on Feature Driven Development

In this episode we talk with Jeff DeLuca about Feature Driven Development (FDD). As one member of the agile methods family FDD is not so famous as Scrum or Extreme Programming but is becoming more and more popular, especially for situations where you have fixed price contracts. As the inventor of FDD Jeff gives short introduction to the method itself, talks about the basic ideas behind FDD and discusses with us how FDD relates to other members of the agile family.

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Episode 82: Organization of Large Code Bases with Juergen Hoeller

Filed in Episodes by on January 2, 2008 7 Comments
Episode 82: Organization of Large Code Bases with Juergen Hoeller

In this episode Eberhard Wolff speaks with Jürgen Höller, the co-found of the Spring framework. Spring is a tremendously successful Java framework so they discuss the design of large frameworks and the issues that arise in the evolution.
Jürgen explains the management of dependencies in the framework, how to structure such a framework, how to offer compatibility for the existing user base while evolving the framework and the role of metrics during development.

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