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{-# LANGUAGE Haskell2010 #-}
{-# LANGUAGE MagicHash, PolyKinds, ExplicitForAll #-}
module T14765 where
import GHC.Exts
fold :: forall rep a (r :: TYPE rep).
(r -> a -> Proxy# r -> r) -> (Proxy# r -> r) -> [a] -> r
fold f k [] = k proxy#
fold f k (x : xs) = fold f (f (k proxy#) x) xs
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