The Haskell Cast

Interviews and Insights from the Haskell Community

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Listen to regular interviews with the Haskell community. The podcast covers news, libraries, and whatever other topics we wander onto with our guests.
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Episode 14 - Richard Eisenberg on Dependent Types in Haskell
Tuesday, 13 June, 2017

00:29 What are dependent type systems? 03:38 applying dependent types to industry 07:30 writing dependently typed programs in Haskell today 09:07 GADTs (Generalized Algebraic Data Types) 11:01 the future of dependent types in GHC 13:40 teaching dependent types 18:03 learning dependent types 20:20 a future style of Haskell programming with dependent types 21:21 Servant and opaleye as an example of type-level features 23:22 tool support for dependently typed programming 24:06 simple applications of dependent types for linear algebra 26:25 Are dependent types worth it? 28:47 complex type system errors 33:07 LiquidHaskell 36:26 safe zero-cost coercions 41:20 total vs type safe 48:36 working on GHC’s type system 51:09 using GHC extensions in the GHC source code 53:00 road to Haskell 55:37 teaching Haskell to students 1:03:00 a hopeful future for reliable software through dependent types