C#学习.使用泛型进行数据交换

        static void Swap<T>(ref T a, ref T b)
        {
            T t;
            t = a;
            a = b;
            b = t;
        }
        static void Main(string[] args)
        {
            string a = \”abc\”;
            string b = \”123\”;
            Swap<string>(ref a, ref b);
            Console.WriteLine(\”a={0},b={1}\”, a, b);
            Console.ReadLine();
        }