#3699: Wildcards in type functions
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Reporter: MartijnVanSteenbergen | Owner:
Type: feature request | Status: new
Priority: normal | Component: Compiler
Version: 6.10.4 | Keywords:
Os: Unknown/Multiple | Testcase:
Architecture: Unknown/Multiple | Failure: None/Unknown
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I would like to be able to use wildcards in type synonym family instances,
so that I can write:
{{{
type instance ErrorAlg (f :>: _) e a = ErrorAlg f e a
}}}
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3699>
GHC <http://www.haskell.org/ghc/>
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