partial type as template argument c++ [duplicate]

Answer 1

Yes, like this

#include 
#include 

template  class container_t, typename value_t>
struct container_types
{
    typedef container_t value_container_t;
    typedef container_t > pair_container_t;
};

template 
using my_vector = std::vector;

int main(int argc,char** argv)
{
    container_types::value_container_t buff(100);
    std::cout << buff[50] << std::endl;
}

Note that I had to wrap std::vector with my_vector, as std::vector actually has several template arguments.