Created
October 3, 2017 11:01
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Answers of PureScript by Example Ch7 exercises.
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| liftedAdd :: forall f a. Apply f => Semiring a => f a -> f a -> f a | |
| liftedAdd = lift2 (+) | |
| combineMaybe :: forall a f. Applicative f => Maybe (f a) -> f (Maybe a) | |
| combineMaybe Nothing = pure Nothing | |
| combineMaybe (Just f) = Just <$> f |
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