HoldemHand.Hand.CardRank C# (CSharp) 메소드

        public static int CardRank(int card)
        {
            #if DEBUG
            // Legal values are 0 - 52.
            if (card < 0 || card > 52)
                throw new ArgumentOutOfRangeException("card");
            #endif
            return card % 13;
        }