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RyanGlScott/FreeTH.hs

Created February 8, 2016 00:46
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FreeTH.hs
{-# LANGUAGE DeriveFunctor #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE GADTs #-}
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE StandaloneDeriving #-}
{-# LANGUAGE TemplateHaskell #-}
{-# OPTIONS_GHC -ddump-splices #-}
module FreeTH where
import Control.Monad.Free
import Control.Monad.Free.TH
deriving instance Functor (Foo a)
data Foo a b where
Foo1, Foo2 :: d -> Foo Int d
Foo3 :: Foo Char f
$(makeFree ''Foo)
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