map -package:containers -package:base-compat -package:insert-ordered-containers -package:dense-linear-algebra -package:base -package:base-prelude -package:hedgehog -package:basement -package:ghc -is:exact -package:imports -package:case-insensitive is:exact -package:dlist package:charset

map :: (Char -> Char) -> CharSet -> CharSet
charset Data.CharSet