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GHC/Type system

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== Type system extensions in GHC ==
 
== 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 [http://www.haskell.org/ghc/docs/latest/html/users_guide/type-extensions.html user manual], but this page is a place to record observations, notes, and suggestions on them.
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GHC comes with a rather large collection of type-system extensions (beyond Haskell 98). They are all documented in the [http://www.haskell.org/ghc/docs/latest/html/users_guide/type-extensions.html user manual], but this page is a place to record observations, notes, and suggestions on them.
   
 
=== Overlapping instances ===
 
=== Overlapping instances ===

Revision as of 02:01, 12 October 2006

1 Type system extensions in GHC

GHC comes with a rather large 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.