#7642: Nullary type classes
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Reporter: shachaf | Owner:
Type: feature request | Status: new
Priority: normal | Milestone:
Component: Compiler (Type checker) | Version: 7.6.1
Keywords: | Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: None/Unknown
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Comment(by simonpj):
OK, fine. I can't say I find the motivation very persuasive, but I agree
in general that lifting restrictions is a Good Thing provided it does not
have knock-on consequences. Maybe this doesn't.
Do you feel like augmenting your patch?
* We need an extension flag `-XNullaryTypeClases`.
* Test the flag when needed (you know the place)
* Document the flag in the usar manual
* Perhaps a test case or two
If you do that, I'll drop it in. Thanks!
Simon
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7642#comment:7>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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