#define TEST(ITEMNAME) AddItem(ITEMNAME, #ITEMNAME);template 
     
      void AddItem(T& var, const std::string& name){    cout << var << endl;    cout << name << endl;}template 
      
       void foo_impl(T val, true_type){    cout << "one" << endl;}template 
       
        void foo_impl(T val, false_type){    cout << "two" << endl;}template 
        
         void foo(T val){    foo_impl(val, std::is_integral
         
          ());}int main(int argc, char *argv[]){    int a = 100;    TEST(a);    foo(100.01);    getchar();    return 0;}