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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: Research Papers - Dependent Types in Haskell at Aurora Borealis
Chair(s): Joachim BreitnerDFINITY Foundation
icfp-2019-papers15:20 - 15:43
David Thrane ChristiansenGalois, USA, Iavor DiatchkiGalois, Inc., Robert DockinsGalois, Inc., Joe HendrixGalois, Inc., Tristan RavitchGalois, Inc.
icfp-2019-papers15:43 - 16:06
Stephanie WeirichUniversity of Pennsylvania, USA, Pritam ChoudhuryUniversity of Pennsylvania, Antoine VoizardUniversity of Pennsylvannia, Richard A. EisenbergBryn Mawr College, USA
icfp-2019-papers16:06 - 16:30
Csongor KissImperial College London, Tony FieldImperial College London, Susan EisenbachImperial College London, Simon Peyton JonesMicrosoft, UK