Safe HaskellSafe-Inferred

SpuriousSuperclassConstraints

Description

What is tested here:

Due to a change in GHC 7.6.1 we had a bug that superclass contraints were included in the instances list. Edward K. repported it here:

http://www.haskell.org/pipermail/haskell-cafe/2012-September/103600.html

And here is the corresponding thread on glasgow-haskell-users:

http://www.haskell.org/pipermail/glasgow-haskell-users/2012-September/022914.html

It has been fixed in:

6ccf78e15a525282fef61bc4f58a279aa9c21771
Fix spurious superclass constraints bug.

Documentation

data SomeType (f :: * -> *) a #

Instances

Instances details
Functor (SomeType f) # 
Instance details

Defined in SpuriousSuperclassConstraints

Methods

fmap :: (a -> b) -> SomeType f a -> SomeType f b #

(<$) :: a -> SomeType f b -> SomeType f a #

Applicative f => Applicative (SomeType f) # 
Instance details

Defined in SpuriousSuperclassConstraints

Methods

pure :: a -> SomeType f a #

(<*>) :: SomeType f (a -> b) -> SomeType f a -> SomeType f b #

liftA2 :: (a -> b -> c) -> SomeType f a -> SomeType f b -> SomeType f c #

(*>) :: SomeType f a -> SomeType f b -> SomeType f b #

(<*) :: SomeType f a -> SomeType f b -> SomeType f a #