val get : t -> int -> CamomileLibrary.UChar.t
val init : int -> (int -> CamomileLibrary.UChar.t) -> t
val length : t -> int
val check_range : t -> int -> bool
val look : t -> index -> CamomileLibrary.UChar.t
val iter : (CamomileLibrary.UChar.t -> unit) -> t -> unit
module US = US
module Buf : sig ... end