(** Return a stream of lines *)
val to_stream : string -> string Stream.t

(** Return a list of a lines *)
val to_list : string -> string list

(** Write a list of lines to a file *)
val of_list : string list -> string -> unit

(** Modify a file "in place" by loading it into memory, applying f to
  each line, and writing the result to the same path. *)
val map : (string -> string) -> string -> unit

(** Apply f to each line of a file *)
val iter : (string -> unit) -> string -> unit