Base_bigstring.To_stringval blit : (t, Base.bytes) Base.Blit.blitval blito : (t, Base.bytes) Base.Blit.blitoval unsafe_blit : (t, Base.bytes) Base.Blit.blitinclude Base.Blit.S_to_string with type t := tval sub : t -> pos:int -> len:int -> stringval subo : ?pos:int -> ?len:int -> t -> string