小步慢跑

   1: #ifndef _FOO_H_

   2: #define _FOO_H_

   3: #include <stdio.h>

   4: #include<iostream>

   5: #include<string>

   6:  

   7: class foo

   8: {

   9: public:

  10:     template<typename T>

  11:         void Saytype(const T&)

  12:     {

  13:         std::cout <<"unrecognized  type !"<<std::endl;

  14:     }

  15:  

  16:     // 下面的全特化在 vc6下編譯通過，但g++ 4.1.2 編譯失敗

  17: //     template<>

  18: //         void Saytype<int>(const int & )

  19: //     {

  20: //         std::cout<<" type is int";

  21: //     }

  22:     // g++上可以使用重載來代替全特化

  23:     void Saytype(const int &)

  24:     {

  25:         std::cout<<" type is int";

  26:     }

  27: };

  28:  

  29: #endif

   1: #include "../include/foo.h"

   2:  

   3: int main()

   4: {

   5:     

   6:     foo f;

   7:     f.Saytype((unsigned int)1);

   8:     f.Saytype((int)1);

   9:  

  10:     return 1;

  11: }