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map -package:containers -package:aeson -package:ghc -package:basement -package:psqueues -package:charset -is:exact -is:exact -package:pipes -package:invertible -package:integration package:foldl is:exact
map
:: Ord a => Fold (a, b) (Map a b)
foldl
Control.Foldl
Fold pairs into a map.
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