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Erschienen in:
2012 | OriginalPaper | Buchkapitel
Lightweight Polymorphic Effects
verfasst von : Lukas Rytz, Martin Odersky, Philipp Haller
Erschienen in: ECOOP 2012 – Object-Oriented Programming
Verlag: Springer Berlin Heidelberg
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Type-and-effect systems are a well-studied approach for reasoning about the computational behavior of programs. Nevertheless, there is only one example of an effect system that has been adopted in a wide-spread industrial language: Java’s checked exceptions. We believe that the main obstacle to using effect systems in day-to-day programming is their verbosity, especially when writing functions that are polymorphic in the effect of their argument. To overcome this issue, we propose a new syntactically lightweight technique for writing effect-polymorphic functions. We show its independence from a specific kind of side-effect by embedding it into a generic and extensible framework for checking effects of multiple domains. Finally, we verify the expressiveness and practicality of the system by implementing it for the Scala programming language.