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In this talk, Lennart will show how to design a strongly typed interface to an external library. The external library has some rather complex, dynamically checked, types. Making a strongly typed, easy-to-use version of the API uses several Haskell type system extensions, e.g., type level strings, closed type families, kind definitions. It even uses some extensions that are not quite in ghc yet.
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Lennart Augustsson is currently employed at Standard Chartered Bank in London. During his career he has done different things, e.g., writing about four Haskell compilers, written USB device drivers, winning the International Obfuscated C Code Co