dispatch based on type of the iterator the container supports

containter_access.cpp

#include <iostream>
#include <vector>
#include <deque>
#include <list>
#include <set>
#include <unordered_set>
#include <forward_list>
#include <iterator>

template<typename C>
void containter_access (C c, std::random_access_iterator_tag)
{
  std::cout << "container with random access" << std::endl;
}

template<typename C>
void containter_access (C c, std::bidirectional_iterator_tag)
{
  std::cout << "container with bidirectional access" << std::endl;
}

template<typename C>
void containter_access (C c, std::forward_iterator_tag)
{ 
  std::cout << "container with forward access" << std::endl;
}

template<typename C>
void containter_access (C c)
{ 
  containter_access (c, typename std::iterator_traits<typename C::iterator>::iterator_category ());
}

int main ()
{
  std::vector<int> v;
  containter_access (v);

  std::deque<int> d;
  containter_access (d);

  std::list<int> l;
  containter_access (l);

  std::set<int> s;
  containter_access (s);

  std::unordered_set<int> us;
  containter_access (us);

  std::forward_list<int> fl;
  containter_access (fl);
}