map -package:containers -package:foldl -package:dlist -package:basement -package:bytestring -package:invertible -package:case-insensitive package:os-string

O(n) map f xs is the OsString obtained by applying f to each element of xs.
O(n) map f xs is the ShortByteString obtained by applying f to each element of xs.
O(n) map f xs is the ShortByteString obtained by applying f to each element of xs.
O(n) map f xs is the OsString obtained by applying f to each element of xs.
O(n) map f xs is the OsString obtained by applying f to each element of xs.