sig type t = string val make : int -> char -> string val init : int -> (int -> char) -> string val empty : string val of_bytes : bytes -> string val to_bytes : string -> bytes external length : string -> int = "%string_length" external get : string -> int -> char = "%string_safe_get" val concat : string -> string list -> string val cat : string -> string -> string val equal : String.t -> String.t -> bool val compare : String.t -> String.t -> int val starts_with : prefix:string -> string -> bool val ends_with : suffix:string -> string -> bool val contains_from : string -> int -> char -> bool val rcontains_from : string -> int -> char -> bool val contains : string -> char -> bool val sub : string -> int -> int -> string val split_on_char : char -> string -> string list val map : (char -> char) -> string -> string val mapi : (int -> char -> char) -> string -> string val fold_left : ('a -> char -> 'a) -> 'a -> string -> 'a val fold_right : (char -> 'a -> 'a) -> string -> 'a -> 'a val for_all : (char -> bool) -> string -> bool val exists : (char -> bool) -> string -> bool val trim : string -> string val escaped : string -> string val uppercase_ascii : string -> string val lowercase_ascii : string -> string val capitalize_ascii : string -> string val uncapitalize_ascii : string -> string val iter : (char -> unit) -> string -> unit val iteri : (int -> char -> unit) -> string -> unit val index_from : string -> int -> char -> int val index_from_opt : string -> int -> char -> int option val rindex_from : string -> int -> char -> int val rindex_from_opt : string -> int -> char -> int option val index : string -> char -> int val index_opt : string -> char -> int option val rindex : string -> char -> int val rindex_opt : string -> char -> int option val to_seq : String.t -> char Stdlib.Seq.t val to_seqi : String.t -> (int * char) Stdlib.Seq.t val of_seq : char Stdlib.Seq.t -> String.t val get_utf_8_uchar : String.t -> int -> Stdlib.Uchar.utf_decode val is_valid_utf_8 : String.t -> bool val get_utf_16be_uchar : String.t -> int -> Stdlib.Uchar.utf_decode val is_valid_utf_16be : String.t -> bool val get_utf_16le_uchar : String.t -> int -> Stdlib.Uchar.utf_decode val is_valid_utf_16le : String.t -> bool val blit : string -> int -> bytes -> int -> int -> unit val get_uint8 : string -> int -> int val get_int8 : string -> int -> int val get_uint16_ne : string -> int -> int val get_uint16_be : string -> int -> int val get_uint16_le : string -> int -> int val get_int16_ne : string -> int -> int val get_int16_be : string -> int -> int val get_int16_le : string -> int -> int val get_int32_ne : string -> int -> int32 val hash : String.t -> int val seeded_hash : int -> String.t -> int val get_int32_be : string -> int -> int32 val get_int32_le : string -> int -> int32 val get_int64_ne : string -> int -> int64 val get_int64_be : string -> int -> int64 val get_int64_le : string -> int -> int64 external unsafe_get : string -> int -> char = "%string_unsafe_get" external unsafe_blit : string -> int -> bytes -> int -> int -> unit = "caml_blit_string" [@@noalloc] end