c++ - The function template specialization when using tempates as argument -

i want write function template deal vectors, lists, sets, ... , want write specialization function deal map separately , when wrote following code , compiler reports errors.

could 1 me how modify it?

#include <iostream> #include <string> #include <map> #include <unordered_map> using namespace std;  // test() vectors, lists, sets, ...  template <template <typename...> class t> void test() {     t<string, int> x;     //... }  // specialize test() map template <> void test <map<> class t>() {      t<string, int> x;     //... }   int main() {     test<map>();     test<unordered_map>(); } 

the template specialization should be:

template <> void test <std::map>() {      std::map<string, int> x; } 

i changed template parameter map<> class t invalid syntax std::map. , changed t<string, int> std::map<string, int> because name t doesn't exist in specialization.