static void Main()
{
var isAce = new AceCardSpecification();
var isHighCard = new HighCardSpecification();
var isRedCard = new RedSuitSpecification();
var blackRoyalFlushesCards = isHighCard.Or(isAce).And(isRedCard.Not());
var royalFlushes = new Deck().Cards
.Where(card => blackRoyalFlushesCards.IsSatisfiedBy(card))
.GroupBy(card => card.Suit)
.Select((royalFlush) => string.Join(", ", royalFlush));
Console.WriteLine(string.Join(Environment.NewLine, royalFlushes));
}
static void Main()
{
var isAce = new AceCardSpecification();
var isHighCard = new HighCardSpecification();
var isRedCard = new RedSuitSpecification();
var blackRoyalFlushesCards = isHighCard.Or(isAce).And(isRedCard.Not());
var royalFlushes = new Deck().Cards
.Where(card => blackRoyalFlushesCards.IsSatisfiedBy(card))
.GroupBy(card => card.Suit)
.Select((royalFlush) => string.Join(", ", royalFlush));
Console.WriteLine(string.Join(Environment.NewLine, royalFlushes));
}
