#9636: Function with type error accepted -------------------------------------+------------------------------------- Reporter: augustss | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.3 Resolution: | Keywords: Operating System: | Architecture: Unknown/Multiple Unknown/Multiple | Difficulty: Unknown Type of failure: | Blocked By: None/Unknown | Related Tickets: Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by adamgundry): * cc: adamgundry (added) Comment: Type families as currently implemented really are axiomatically-defined functional relations: we don't have an operational semantics for them as functions. I agree that being able to write actual functional programs at the type level would be nice, but we can't yet. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9636#comment:22 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler