public void NotifyAboutNewBike(BikeModel model)
{
if (model.Type == BikeType.Road)
{
Console.WriteLine($" - The Road bike shop now sells the {model.Name}");
}
}
public void NotifyShops(BikeModel model)
{
Console.WriteLine($"Announcing the new {model.Name} bike");
foreach (WeakReference <IBikeShop> shopRef in _shops.ToArray())
{
// C# 6 allows an out parameter to be declare when it's first used
shopRef.TryGetTarget(out IBikeShop shop);
// The object has been destroyed so we don't want to
// keep it in out list of observers
if (shop == null)
{
UnregisterShop(shopRef);
}
else
{
shop.NotifyAboutNewBike(model);
}
}
}
