static void Main(string[] args)
{
var collection = new CollectionNumber();
collection.Subscribe(new Listener());
collection.Add(5);
collection.Add(1);
collection.Add(3);
collection.Subscribe(new Listener());
collection.Add(0);
collection.Delete(1);
foreach (var item in collection)
{
Console.WriteLine(item);
}
Console.ReadLine();
}
public Unsubscriber(CollectionNumber sensor, IObserver <CollectionNumber> listener)
{
_sensor = sensor;
_listener = listener;
}