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Tue 20 Jun 2017 14:55 - 15:30 at Vertex WS217 - C Chair(s): Martin Berger

The Dependent Object Types (DOT) calculus aims to model the essence of Scala, with a focus on abstract type members, path-dependent types, and subtyping. Other Scala features could be defined by translation to DOT.

Mutation is a fundamental feature of Scala currently missing in DOT. Mutation in DOT is needed not only to model effectful computation and mutation in Scala programs, but even to precisely specify how Scala initializes immutable variables and fields (\textsf{val}s).

We present an extension to DOT that adds typed mutable reference cells. We have proven the extension sound with a mechanized proof in Coq. We present the key features of our extended calculus and its soundness proof, and discuss the challenges that we encountered in our search for a sound design and the alternative solutions that we considered.

Tue 20 Jun
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14:00 - 15:30: FTfJP 2017 - C at Vertex WS217
Chair(s): Martin Berger
FTfJP-2017-papers14:00 - 14:20
Julia BelyakovaSouthern Federal University
FTfJP-2017-papers14:20 - 14:55
Paola GianniniUniversita' del Piemonte Orientale, Marco ServettoVictoria University of Wellington, Elena ZuccaUniversity of Genova
FTfJP-2017-papers14:55 - 15:30
Marianna RapoportUniversity of Waterloo, Ondřej LhotákUniversity of Waterloo, Canada