module String: sig .. end
sig
end
include String
val starts_with : string -> string -> bool
string -> string -> bool
val join : string -> string list -> string
string -> string list -> string
val implode : char list -> string
char list -> string
val fold_left : ('a -> char -> 'a) -> 'a -> string -> 'a
('a -> char -> 'a) -> 'a -> string -> 'a