C# 泛型类和泛型方法

static class ExtendHolder
{
     public static void Print <T>(this Holder<T> h)
     {
            T[] vals=h.GetValues();
            Console.WriteLine("{0},\t{1},\t{2}", vals[0], vals[1], vals[2]);
      }    
}
class  Holder<T>
{
       T[] Vals = new T[3];
        
        public  Holder(T v0,T v1,T v2)
        {
             Vals[0]=v0; Vals[1] =v1;Vals[2]=v2;}
         public T[] GetValues() {
             return Vals;
        }
}
class Program
{
       static void Main (string[] args)
       {
             var intHolder =new Holder<int>(3,5,7);
             var stringHolder =new Holder<stirng>("a1","b2","c3");
             intHolder.Print();
             stringHolder.Print();
       }
}

显示结果

3，      5，     7

a1,      b2,      c3