···1010 | Some t -> t
1111 | None ->
1212 invalid_arg
1313- (Printf.sprintf "Keyid.of_int_exn: %d out of range [0, %d]" n max_value)
1313+ (Fmt.str "Keyid.of_int_exn: %d out of range [0, %d]" n max_value)
14141515let to_int t = t
1616let pp fmt t = Format.fprintf fmt "%d" t