/// <summary>
/// Initializes the counts in a new FastDeck to the card counts in the specified Deck.
/// </summary>
public FastDeck(Deck deck)
{
if(deck == null)
throw new ArgumentNullException("deck");
Dictionary<int, int> cardCounts = deck.GetCountsOfCards();
cardCounts.TryGetValue(1, out Ones);
cardCounts.TryGetValue(2, out Twos);
cardCounts.TryGetValue(3, out Threes);
}
