On 16/06/11 15:01, Dmitri O.Kondratiev wrote:
Hi,
Data.Map has many great functions, yet I could not find the one that
allows from one map create another map where keys are values and values
are keys of the first one.
Something like:
transMap:: (Ord k, Ord a) => Map k a -> Map a k
Does such function exist?
Thanks!
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What about something like
transMap :: (Ord k, Ord a) => Map k a -> Map a k
transMap = M.fromList . map swap . M.toList
?
Francesco.
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