Check at compile-time is a template type a vector

Question

I can imagine the following code:

template  class X
{
  public:
   T container;

   void foo()
   {
      if(is_vector(T))
         contain         


        

Answer 1

Using insert only:

#include 
#include 
#include 

template 
class X
{
    public:
    T container;

    template 
    void insert(const U& u) {
        container.insert(container.end(), u);
    }
};

int main() {
    X> v;
    v.insert(2);
    v.insert(1);
    v.insert(0);

    for(std::vector::const_iterator pos = v.container.begin();
        pos != v.container.end();
        ++pos)
    {
        std::cout << *pos;
    }
    std::cout << '\n';

    X> s;
    s.insert(2);
    s.insert(1);
    s.insert(0);

    for(std::set::const_iterator pos = s.container.begin();
        pos != s.container.end();
        ++pos)
    {
        std::cout << *pos;
    }
    std::cout << '\n';
}