static void Main(string[] args)
{
Console.WriteLine("***** Delegate Covariance *****\n");
ObtainVehicalDelegate targetA = new ObtainVehicalDelegate(GetBasicCar);
Car c = targetA();
Console.WriteLine("Obtained a {0}", c);
// Covariance allows this target assignment.
ObtainVehicalDelegate targetB = new ObtainVehicalDelegate(GetSportsCar);
SportsCar sc = (SportsCar)targetB();
Console.WriteLine("Obtained a {0}", sc);
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Delegate Covariance *****\n");
ObtainVehicalDelegate targetA = new ObtainVehicalDelegate(GetBasicCar);
Car c = targetA();
Console.WriteLine("Obtained a {0}", c);
// Делегаты ковариантны.
ObtainVehicalDelegate targetB = new ObtainVehicalDelegate(GetSportsCar);
SportsCar sc = (SportsCar)targetB();
Console.WriteLine("Obtained a {0}", sc);
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Delegate Covariance *****\n");
ObtainVehicalDelegate targetA = new ObtainVehicalDelegate(GetBasicCar);
Car c = targetA();
Console.WriteLine("Obtained a {0}", c);
// Covariance allows this target assignment.
ObtainVehicalDelegate targetB = new ObtainVehicalDelegate(GetSportsCar);
// performe an explicit cast to bbtain access to the members of the devied type
SportsCar sc = (SportsCar)targetB();
Console.WriteLine("Obtained a {0}", sc);
Console.ReadLine();
}
