gistfile1.txt

        public static T? forXY<T>(this T[,] grid, Action<int, int> action) where T : class
        {
            for (int y = 0; y < grid.getHeight(); y++)
            {
                for (int x = 0; x < grid.getWidth(); x++)
                {
                    action(x, y);
                }
            }

            return null;
        }