Swift 3.0  Post Local Notification

Notification name should be same for both sender and receiver

// Some where in class A [Post (Broadcast)]

let notificationObjName = Notification.Name("NotificationName")

NotificationCenter.default.post(name: notificationObjName, object: nil)

// And in other class B register for notification

let notificationName = Notification.Name("NotificationName")

NotificationCenter.default.addObserver(self, selector: #selector(ClassB.methodName), name: notificationName, object: nil)

// This method is call when post notification in Class B

func methodName(notification: NSNotification) {

        // Do, what you want

    }

Pass data using notification

let tempDict:[String: UIImage] = ["image": image]

// post a notification with data to class A

NotificationCenter.default.post(name: NSNotification.Name(rawValue: "notificationName"), object: nil, userInfo: tempDict)

        

// Register to receive notification in your class B

NotificationCenter.default.addObserver(self, selector: #selector(classB.methodName(_:)), name: NSNotification.Name(rawValue: "notificationName"), object: nil)

// recive notification

func methodName(_ notify: NSNotification) {        

    if let image = notify.userInfo?["image"] as? UIImage {

       // Do, what you want

     }

}

Swift 3.0 - Check if array contains element with property 

if array.contains(where: { $0.someProperty == "matchProperty" }) {
     // Property found
} else {
    // Property not found
}


    let elements = [1, 2, 3, 4, 5]

    if elements.contains(5) { 

        // Found

      } else {

         // Not Found

      }