code:
import Nat “mo:base/Nat”;
import Text “mo:base/Text”;
import Debug “mo:base/Debug”;
import Nat “mo:base/Nat”;
import Map “mo:base/HashMap”;
import Hash “mo:base/Hash”;
actor Hastane_AracTakip {
type Vehicle = {
plate_number: Text;
available: Bool;
};
type Hospital = {
name: Text;
vehicles: [Vehicle];
};
public func registerorupdate(hospital:?Hospital, plate_number: ?Text, available: ?Bool) : async {
var vehiclesIndex = 0;
for (i, Vehicle) in Array.indexed(hospital.Vehicles) {
if (Vehicle.plate_number == plate_number) {
vehiclesIndex = i;
break;
}
}
if (vehiclesIndex >= 1) {
hospital.vehicles[vehiclesIndex] := { plate_number; available };
Debug.print(“Car information updated successfully.”);
} else {
hospital.vehicles := hospital.vehicles # [{ plate_number; available }];
Debug.print(“New car registered successfully.”);
}
};
};