static void Main(string[] args)
{
IAnimalCollection <IAnimal> animalCollection = GetDogCollection();
//animalCollection.AddAnimal(new Cat()); //Would get a compiler error because this method no longer exists.
}
public AnimalService(IAnimalCollection collection)
{
_collection = collection;
}
static void Main(string[] args)
{
IAnimalCollection <IAnimal> animalCollection = GetDogCollection();
animalCollection.AddAnimal(new Cat()); //We just added a cat to a collection of dogs.
}
static void Main(string[] args)
{
IAnimalCollection <IAnimal> animalCollection = GetDogCollection();
//animalCollection.AddAnimal(new Cat()); //Would get a compiler error if we tried to add a cat to the collection
}
