Swift 3: NSNotification vs Notification

Question

In Swift 3, what are the differences between Notification vs NSNotification?

Specifically, in Notification struct, there is a ReferenceType typealias of NSNotification. How is ReferenceType being used here?

public struct Notification : ReferenceConvertible, Equatable, Hashable {

    public typealias ReferenceType = NSNotification
    ...
}

Answer 1

Notification is a struct wrapper around NSNotification. You can bridge between the two using as, which is what ReferenceConvertible does.