#8021: Multiple constraint classes - the alternative to superclass
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Reporter: wvv | Owner:
Type: feature request | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 7.6.3
Resolution: | Keywords:
Operating System: Unknown/Multiple | Architecture: Unknown/Multiple
Type of failure: None/Unknown | Difficulty: Unknown
Test Case: | Blocked By:
Blocking: | Related Tickets:
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Comment (by wvv):
And this is only tip of the iceberg.
Now we have discussion about
(Monad m) vs. (Functor m => Monad m).
With class interfaces it is not an option: we have them both(!!!)
{{{
class Monad m where ...
class Functor m => Applicative m => Monad m where ..
}}}
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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8021#comment:7>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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