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ICFP 2019
Sun 18 - Fri 23 August 2019 Berlin, Germany
Tue 20 Aug 2019 15:43 - 16:06 at Aurora Borealis - Dependent Types in Haskell Chair(s): Joachim Breitner

Modern Haskell supports zero-cost coercions, a mechanism where types that share the same run-time representation may be freely converted between. To make sure such conversions are safe and desirable, this feature relies on a mechanism of roles to prohibit invalid coercions through abstract data structures. In this work, we show how to integrate roles with dependent type systems and prove, using the Coq proof assistant, that the resulting system is sound. We have designed this work as a foundation for the addition of dependent types to the Glasgow Haskell Compiler, but we also expect that it will be of use to designers of other dependently-typed languages who might want to adopt Haskell’s safe coercions feature.

Tue 20 Aug
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15:20 - 16:30
Dependent Types in HaskellResearch Papers at Aurora Borealis
Chair(s): Joachim BreitnerDFINITY Foundation
15:20
23m
Talk
Dependently Typed Haskell in Industry (Experience Report)
Research Papers
David Thrane ChristiansenGalois, USA, Iavor DiatchkiGalois, Inc., Robert DockinsGalois, Inc., Joe HendrixGalois, Inc., Tristan RavitchGalois, Inc.
15:43
23m
Talk
A Role for Dependent Types in Haskell
Research Papers
Stephanie WeirichUniversity of Pennsylvania, USA, Pritam ChoudhuryUniversity of Pennsylvania, Antoine VoizardUniversity of Pennsylvannia, Richard A. EisenbergBryn Mawr College, USA
16:06
23m
Talk
Higher-order Type-level Programming in Haskell
Research Papers
Csongor KissImperial College London, Tony FieldImperial College London, Susan EisenbachImperial College London, Simon Peyton JonesMicrosoft, UK