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Created October 20, 2020 03:18
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Reader.hs
module Reader where
data ReaderF (r :: Type) (a :: Type) where
Ask :: ReaderF r r
Local :: (r -> r) -> (Free (ReaderF r) a) -> ReaderF r a
newtype Reader (r :: Type) (a :: Type) = R (Free (ReaderF r) a)
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