purescript-0.6.3: examples/passing/ForeignInstance.purs

module Main where

class Foo a where
  foo :: a -> String

foreign import instance fooArray :: (Foo a) => Foo [a]

foreign import instance fooNumber :: Foo Number

foreign import instance fooString :: Foo String

foreign import fooString "var fooString = {};" :: Unit
foreign import fooNumber "var fooNumber = {};" :: Unit
foreign import fooArray "var fooArray = {};" :: Unit

test1 _ = foo [1, 2, 3]

test2 _ = foo "Test"

main = Debug.Trace.trace "Done"