map is:exact -package:text -package:base -package:containers -package:incipit-base -package:insert-ordered-containers -package:basement -package:dense-linear-algebra -package:imports -package:invertible -package:Cabal-syntax -package:hedgehog -package:base-compat-batteries package:monoidal-containers
O(n) Transform this map by applying a function to every value.