map -package:containers -package:basement -package:conduit -is:exact -package:case-insensitive -package:base-prelude -package:insert-ordered-containers is:exact -package:integration -package:psqueues -package:foldl -package:ghc -package:regex-tdfa -package:dlist package:charset

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