#11715: Constraint vs * -------------------------------------+------------------------------------- Reporter: bgamari | Owner: Type: bug | Status: new Priority: high | Milestone: 8.2.1 Component: Compiler (Type | Version: 8.0.1-rc1 checker) | Resolution: | Keywords: Typeable Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by int-index): Replying to [comment:34 rwbarton]:
I have a hard time believing you'd "like" to do this. Wouldn't it be more sensible to use implicit parameters?
I have a disdain for implicit parameters that stems from the fact that their names are represented by strings (`Symbol`s, to be precise), and names are not strings in my view, they are unique identifiers declared somewhere. More importantly, I may want to declare (unexported) data types in this module, and instances for those data types may require a context too: {{{ data Helper = ... instance Int => Eq Helper where ... }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11715#comment:35 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler