external length : string -> int = "%string_length"
external get : string -> int -> char = "%string_safe_get"
external set : bytes -> int -> char -> unit = "%string_safe_set"[@@ocaml.deprecated
                                                                  "Use Bytes.set instead."]
external create : int -> bytes = "caml_create_string"[@@ocaml.deprecated
                                                       "Use Bytes.create instead."]
val make : int -> char -> string
val init : int -> (int -> char) -> string
val copy : string -> string[@@ocaml.deprecated
                             "- : string -> string = <fun>"]
val sub : string -> int -> int -> string
val fill : bytes -> int -> int -> char -> unit[@@ocaml.deprecated
                                                "Use Bytes.fill instead."]
val blit : string -> int -> bytes -> int -> int -> unit
val concat : string -> string list -> string
val iter : (char -> unit) -> string -> unit
val iteri : (int -> char -> unit) -> string -> unit
val map : (char -> char) -> string -> string
val mapi : (int -> char -> char) -> string -> string
val trim : string -> string
val escaped : string -> string
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 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 contains : string -> char -> bool
val contains_from : string -> int -> char -> bool
val rcontains_from : string -> int -> char -> bool
val uppercase : string -> string[@@ocaml.deprecated
                                  "Use String.uppercase_ascii instead."]
val lowercase : string -> string[@@ocaml.deprecated
                                  "Use String.lowercase_ascii instead."]
val capitalize : string -> string[@@ocaml.deprecated
                                   "Use String.capitalize_ascii instead."]
val uncapitalize : string -> string[@@ocaml.deprecated
                                     "Use String.uncapitalize_ascii instead."]
val uppercase_ascii : string -> string
val lowercase_ascii : string -> string
val capitalize_ascii : string -> string
val uncapitalize_ascii : string -> string
type t = string
val compare : t -> t -> int
val equal : t -> t -> bool
val split_on_char : char -> string -> string list
external unsafe_get : string -> int -> char = "%string_unsafe_get"
external unsafe_set : bytes -> int -> char -> unit = "%string_unsafe_set"
[@@ocaml.deprecated "- : bytes -> int -> char -> unit = <fun>"]
external unsafe_blit :
  string -> int -> bytes -> int -> int -> unit = "caml_blit_string"[@@noalloc
                                                                    ]
external unsafe_fill :
  bytes -> int -> int -> char -> unit = "caml_fill_string"[@@ocaml.deprecated
                                                            "- : bytes -> int -> int -> char -> unit = <fun>"]
[@@noalloc ]
