#3714: Improve error message if an associated family declaration has excess
parameters
---------------------------+------------------------------------------------
Reporter: simonpj | Owner: chak
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 6.10.4
Resolution: | Keywords:
Difficulty: | Os: Unknown/Multiple
Testcase: | Architecture: Unknown/Multiple
Failure: None/Unknown |
---------------------------+------------------------------------------------
Comment (by simonpj):
Oh yes, silly me. The point is that in a class instance declaration you
only get to write ''one'' associated type instance declaration, so there
is no point in having a type index that is not also a class index.
The syntax for distinguishing type ''indices'' from ''type parameters'' is
horrible, but it's hard to think of something better.
Simon
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3714#comment:2>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
_______________________________________________
Glasgow-haskell-bugs mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
