purescript-0.7.0.0: examples/passing/CheckTypeClass.purs

module Main where

import Prelude

data Bar a = Bar
data Baz

class Foo a where
  foo :: Bar a -> Baz

foo_ :: forall a. (Foo a) => a -> Baz
foo_ x = foo ((mkBar :: forall a. (Foo a) => a -> Bar a) x)

mkBar :: forall a. a -> Bar a
mkBar _ = Bar

main = Debug.Trace.trace "Done"