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{-# LANGUAGE Haskell2010 #-}
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE UndecidableInstances #-}
{-# LANGUAGE StarIsType #-}
{-# OPTIONS_GHC -Wno-star-is-type #-}
-- NB: -XNoPolyKinds. All the variables in the Proxies should be defaulted to *.
module NestedProxies where
import Data.Proxy
-- | 'F1' docs
type family F1 a b :: * -> *
-- | 'F2' docs
type family F2 a b :: * -> * where
F2 Int b = Maybe
F2 a b = []
-- | 'D' docs
data family D a :: * -> *
v :: Int
v = 42
-- | 'C' docs
class C a where
-- | 'AT' docs
type AT a
type AT a = Proxy (Proxy (Proxy (Proxy (Proxy (Proxy (Proxy (Proxy (Proxy (Proxy)))))))))
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