module Utils:sig..end
val trim_left : string -> stringval trim_right : string -> stringval trim : string -> stringval read_lines : string -> string listread_lines filename returns the lines from the file named filename.
Raises an exception if an i/o error occurs.
val write_lines : string -> string list -> unitwrite_lines filename lines writes the strings from lines to the file
named filename.
Raises an exception if an i/o error occurs.