map -package:containers -package:charset -package:invertible -package:monoidal-containers -package:dlist is:exact -package:base-compat package:bytestring

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