Here are the slides from my presentation at NNUG 30.09.2010. (First slide in Norwegian, rest in English) . It is from a real world experience when presenting heterogenous data in a grid. The example walkthrough uses GOF patterns and Single Responsibility to improve the code quality. It starts out with a naive approach and does stepwise refactorings. We get to know the Presenter and the Visitor pattern – which fully takes usage of OO and static languages. The combination of Presenter and Visitor is indeed powerful.
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