Created
March 30, 2014 04:40
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Simple RankNTypes example
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| {-# LANGUAGE RankNTypes #-} | |
| module IdExamples where | |
| vanilla :: (a -> a) -> a -> a | |
| vanilla f i = | |
| let shouldWork = f (1 :: Int)-- won't actually work | |
| in f i | |
| rankNVersion :: (forall a. a -> a) -> b -> b | |
| rankNVersion f i = | |
| let works = f 1 | |
| in f i |
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