class ActorComparer : IEqualityComparer<MovieActor>
{

private Func<Actor, object> KeySelector;

public ActorComparer(Func<MovieActor, object> keySelector)
{
	KeySelector = keySelector
}

public bool Equals(MovieActor x, MovieActor y)
{
	return KeySelector(x).Equals(KeySelector(y));
}
public int GetHashCode(MovieActor obj)
{
return obj.GetHashCode(); }

public int GetHashCode(MovieActor obj)
{
	return KeySelector(obj).GetHashCode();
}

}