泛型与普通方法、Object方法效率比较

简介：

   方法的执行效率比较，首先考虑的就是执行方法时所耗费的时长，时长越短，效率越好，耗时越长，效率越差。下面就从执行耗时方法考量三种方法的效率。

实现方法：

 

        static void Main(string[] args)        {            Monitor.Show();        }        public static void Show()        {            Console.WriteLine("****************Monitor******************");            {                int iValue = 12345;                long commonSecond = 0;                long objectSecond = 0;                long genericSecond = 0;                //普通方法                {                    Stopwatch watch = new Stopwatch();                    watch.Start();                    for (int i = 0; i < 1000000; i++)                    {                        ShowInt(iValue);                    }                    watch.Stop();                    commonSecond = watch.ElapsedMilliseconds;                }                //Object                {                    Stopwatch watch = new Stopwatch();                    watch.Start();                    for (int i = 0; i < 1000000; i++)                    {                        ShowObject(iValue);                    }                    watch.Stop();                    objectSecond = watch.ElapsedMilliseconds;                }                //泛型                {                    Stopwatch watch = new Stopwatch();                    watch.Start();                    for (int i = 0; i < 1000000; i++)                    {                        Show<int>(iValue);                    }                    watch.Stop();                    genericSecond = watch.ElapsedMilliseconds;                }                Console.WriteLine("commonSecond={0},objectSecond={1},genericSecond={2}", commonSecond, objectSecond, genericSecond);                Console.ReadKey();            }        }        #region PrivateMethod        private static void ShowInt(int iParameter)        {            //do nothing        }        private static void ShowObject(object oParameter)        {            //do nothing        }        private static void Show<T>(T tParameter)        {            //do nothing        }        #endregion

 

执行结果：

****************Monitor******************commonSecond=3,objectSecond=9,genericSecond=3

 

显然，泛型方法执行效率比较高。