map -package:containers -package:foldl -package:base-prelude -package:Cabal-syntax -package:case-insensitive -package:basement -package:integration -package:dense-linear-algebra -package:ghc -package:pipes -package:base-compat -package:invertible is:exact package:charset

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