c#中几种创建对象的方式的对比

最近学习了msil，发现了很多好玩的，今天介绍一个用IL来创建对象的方式

1.最常见的两种创建对象方式

public static T Create() where T : new()
        {
            return new T();
        }

        public static object CreateNative()
        {
            return new object();
        }

写一个测试帮助方法简单的测试下这两个方法的执行时间的长短：

   public static void Measure(string what, int reps, Action action)
   {
            action();  //warm up

            double[] results = new double[reps];
            for (int i = 0; i < reps; i++)
            {
                Stopwatch sw = Stopwatch.StartNew();
                action();
                results[i] = sw.Elapsed.TotalMilliseconds;
            }
            Console.WriteLine("{0} - AVG = {1}, MIN = {2}, MAX = {3}", what,
                results.Average(), results.Min(), results.Max());
  }

调用测试方法：

            int reps = 5;
            int its = 100000;

            Measure("create", reps, () =>
             {
                 for (int i = 0; i < its; i++)
                 {
                     Create