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map is:exact -package:lens -package:bytestring -package:dlist -package:Cabal-syntax -package:invertible -package:case-insensitive -package:imports -package:aeson -package:ghc package:foldl
map
:: Ord a => Fold (a, b) (Map a b)
foldl
Control.Foldl
Fold pairs into a map.
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