static void Main(string[] args)
{
// instantiate the delegate
// vvv
// Target Method tied to the delegate
//NotifyDel notifyDel = new NotifyDel(EmailService.SendEmail);
//Action notifyDel = new Action(EmailService.SendEmail);
// C# offers predefined delegates like Action(delegate of type void), func(delegate that have a return type)
// Types of Delegates:
// Single cast delegate - a delegate which is tied to a method
// Multicast delegate - a delegate tied to more than one method
//notifyDel += TextService.SendText; // subscribing the methods to make multicast delegate
// delegates maintains an invocation list that contains reference to all subscribed methods
// Invoke the delegate
// notifyDel();
//notifyDel.Invoke();
//Console.WriteLine("----------Using Func Delegate------------");
// vvv vvv
//input parameter ,Return value
// Func<double,double> area = new Func<double,double>(CircleArea);
// Console.WriteLine($"Area of circle is { area.Invoke(4.5)}");
// Predicate - a delegate of type bool
// Predicate pDel= new Predicate(target function);
RepairService repairService = new RepairService();// publisher
Laptop laptop1 = new Laptop()
{
ServiceTag = "2S3S5T1"
};
repairService.Repaired += EmailService.SendEmail; // subscriber 1
repairService.Repaired += TextService.SendText; //subscriber 2
repairService.Repaired += PushNotificationService.SendPushNotification; // subscriber 3
repairService.Repaired -= TextService.SendText; // unsubscribe
repairService.Repair(laptop1);
}
public override void ApplyOnPawn(Pawn pawn, BodyPartRecord part, Pawn billDoer, List <Thing> ingredients, Bill bill)
{
RepairService.Repair(pawn);
}
public override void DoEffect(Pawn usedBy)
{
RepairService.Repair(usedBy);
}