val is_valid_utf_8 : t -> bool
val is_valid_utf_16be : t -> bool
val is_valid_utf_16le : t -> bool
val of_bytes : bytes -> string
val to_bytes : string -> bytes
val cat : string -> string -> string
val starts_with : prefix:string -> string -> bool
val ends_with : suffix:string -> string -> bool
val fold_left : f:('a -> char -> 'a) -> init:'a -> string -> 'a
val fold_left : f:('a -> char -> 'a) -> init:'a -> string -> 'a
val fold_right : f:(char -> 'a -> 'a) -> string -> init:'a -> 'a
val fold_right : f:(char -> 'a -> 'a) -> string -> init:'a -> 'a
val for_all : f:(char -> bool) -> string -> bool
val exists : f:(char -> bool) -> string -> bool
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 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
val to_seqi : t -> (int * char) Seq.t
val equal : t -> t -> bool
val split_on_char : sep:char -> string -> string list
val uppercase_ascii : string -> string
val lowercase_ascii : string -> string
val capitalize_ascii : string -> string
val uncapitalize_ascii : string -> string
val index_from_opt : string -> int -> char -> int option
val rindex_from_opt : string -> int -> char -> int option
val index_opt : string -> char -> int option
val rindex_opt : string -> char -> int option
val init : int -> f:(int -> char) -> string
val mapi : f:(int -> char -> char) -> string -> string
val blit :
src:string ->
src_pos:int ->
dst:bytes ->
dst_pos:int ->
len:int ->
unit
val blit : src:string -> src_pos:int -> dst:bytes -> dst_pos:int -> len:int -> unit
val unsafe_blit :
src:string ->
src_pos:int ->
dst:bytes ->
dst_pos:int ->
len:int ->
unit
external unsafe_blit : src:string -> src_pos:int -> dst:bytes -> dst_pos:int -> len:int -> unit = "caml_blit_string"@@noalloc
external unsafe_blit : src:string -> src_pos:int -> dst:bytes -> dst_pos:int -> len:int -> unit = "caml_blit_string" "noalloc"
val map : f:(char -> char) -> string -> string
val trim : string -> string
val iteri : f:(int -> char -> unit) -> string -> unit
val compare : t -> t -> int
val make : int -> char -> string
val length : string -> int
val get : string -> int -> char
val concat : sep:string -> string list -> string
val contains_from : string -> int -> char -> bool
val rcontains_from : string -> int -> char -> bool
val contains : string -> char -> bool
val sub : string -> pos:int -> len:int -> string
val escaped : string -> string
val iter : f:(char -> unit) -> string -> unit
val index_from : string -> int -> char -> int
val rindex_from : string -> int -> char -> int
val index : string -> char -> int
val rindex : string -> char -> int
val unsafe_get : string -> int -> char