map is:exact -package:text -package:dense-linear-algebra -package:base-prelude -package:basement -package:invertible -package:base-compat-batteries -package:ghc -package:insert-ordered-containers -package:os-string -package:dlist -package:integration -package:case-insensitive package:monoidal-containers
O(n) Transform this map by applying a function to every value.