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GHC/Type system

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Here an [http://www.haskell.org//pipermail/glasgow-haskell-bugs/2006-July/006808.html interesting message] about the interaction of existential types and overlapping instances.
 
Here an [http://www.haskell.org//pipermail/glasgow-haskell-bugs/2006-July/006808.html interesting message] about the interaction of existential types and overlapping instances.
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Revision as of 12:46, 25 July 2006

1 Type system extensions in GHC

GHC comes with a rather lare collection of type-system extensions (beyond Haskell 98). They are all documented in the user manual, but this page is a place to record observations, notes, and suggestions on them.

1.1 Overlapping instances

Here an interesting message about the interaction of existential types and overlapping instances.