blob: b9bb929f77be7708b29c70c8b27a1aad87ddbb17 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
{-# OPTIONS_GHC -Wmissing-role-annotations #-}
{-# LANGUAGE RoleAnnotations #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE StandaloneKindSignatures #-}
module T22702b where
import Data.Kind (Type)
-- type with parameters
type Foo :: Type -> Type -> Type
type role Foo representational phantom
data Foo x y = Foo x
-- type without parameters
data Quu = Quu1 | Quu2
-- polykinded type
type Bar :: (k -> Type) -> k -> Type
type role Bar representational nominal
data Bar f a = Bar (f a)
-- type-class may have roles as well
class C a where
|
