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NathanHowell/gist:6880968

Created October 8, 2013 07:30
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Convert a type to a nested tuple, preserving left-to-right ordering via CPS conversion.
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gistfile1.hs
{-# LANGUAGE DefaultSignatures #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE ScopedTypeVariables #-}
import Data.Typeable
convert :: (Typeable t, Typeable b) => (forall a . Typeable a => a -> r) -> [t] -> b -> r
convert f (x:xs) b = convert f xs (x, b)
convert f [] b = f b
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