Archive for April, 2007

Episode 54: Interview Frank Buschmann

Filed in Episodes by on April 27, 2007 0 Comments
Episode 54: Interview Frank Buschmann

This episode is an interview with Frank Buschmann, one of the pioneers of the pattern movement in Europe. Michael and Frank discuss how it all began: the first conferences on patterns and the first publications by the Gang-of-Four and the POSA 1 team. Frank then elaborates on the new volumes in the Pattern-Oriented Software Architecture book series – POSA 4 and POSA 5 – and gives some examples from the books. The episode concludes with a general discussion on software design and architecture, and best practices on software development.

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Episode 53: Product Line Engineering Pt. 1

Filed in Episodes by on April 17, 2007 2 Comments
Episode 53: Product Line Engineering Pt. 1

Michael Kircher and Markus Voelter introduce the topic of software product line engineering. They motivate when and why product lines are important to consider and what makes them so special. Further, they introduce some key terminology, such as platform, core asset, feature model, commonality, and variability.

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Episode 52: DSL Development in Ruby

Filed in Episodes by on April 7, 2007 0 Comments
Episode 52: DSL Development in Ruby

In this episode, we’re talking to Obie Fernandez about agile DSL development in Ruby. We started our discussion by defining what a DSL is, the difference between internal and external DSLs as well as the importance of the flexibly syntax of the host language in order to make DSLs worthwhile. We then looked at a couple of real world examples for DSLs, specifically, at Business Natural Languages. We then progressed to the main part of the discussions, which centered around the features of Ruby that are important for building DSLs. These include the flexible handling of parentheses, symbols, blocks as well as literal arrays and hashes. We then discussed Ruby’s meta programming feautures and how they are important for building DSLs: instantiation, method_missing callback, class macros, top level
functions and sandboxing. Features like eval, class_eval, instance_eval and define_method are also important for DSLs in
Ruby, as well as using alias_method for simple AOP.

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