Abstract
From the very inception of design patterns, there was the anticipation that some of them would be superceded by new language features. Yet published implementations of classic patterns do not generally live up to this promise. The occurrence of generics, delegates, nested classes, reflection and built-in iteration is confined to a few patterns in a few published compendiums in a few languages. In this paper we trace the interplay between languages and patterns over the past decade and investigate how relevant language features really are for pattern implementation. We back our conclusions with a detailed look at the visitor pattern, examining the impact of C# developed in the past few years. We conclude that efficiency should play a large role in the choice of design pattern implementation, since some new features still bring with them runtime overheads.
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Bishop, J., Horspool, R.N. (2008). On the Efficiency of Design Patterns Implemented in C# 3.0. In: Paige, R.F., Meyer, B. (eds) Objects, Components, Models and Patterns. TOOLS EUROPE 2008. Lecture Notes in Business Information Processing, vol 11. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-69824-1_20
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DOI: https://doi.org/10.1007/978-3-540-69824-1_20
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