Hello everyone, unionWithKey and unionWith have the following types
unionWith :: Ord k => (a -> a -> a) -> Map k a -> Map k a -> Map k a unionWithKey :: Ord k => (k -> a -> a -> a) -> Map k a -> Map k a -> Map k a Since they are implemented by means of mergeWithKey, wouldn't it be possible to generalize these functions to the following types ? unionWith :: Ord k => (a -> b -> c) -> Map k a -> Map k b -> Map k c unionWithKey :: Ord k => (k -> a -> b -> c) -> Map k a -> Map k b -> Map k c Cheers, Jose -- José António Branquinho de Oliveira Lopes Instituto Superior Técnico Technical University of Lisbon
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