swift anonymous class example

Anonymous.swift

protocol HelloListener {
    func hello(title: String)
}

var list :[HelloListener] = [HelloListener]()

var parentsHello: HelloListener = {
    class AnonymousClass: HelloListener {
        func hello(title: String) {
            print("My parents has son name is \(title)")
        }
    }
    return AnonymousClass()
}()

var selfHello: HelloListener = {
    class AnonymousClass: HelloListener {
        func hello(title: String) {
            print("my name is \(title)")
        }
    }
    return AnonymousClass()
}()

list.append(parentsHello)
list.append(selfHello)
for listener in list{
    listener.hello("longhao")
}