#include <iostream>
#include <vector>

template<class iterator>
void test(iterator, iterator)
{
   std::cout << "test iterator\n";
}

template<class iterator, class predicate>
void test(iterator, iterator, predicate)
{
   std::cout << "test iterator, predicate\n";
}

template<class container, class predicate>
void test(const container& cont, predicate compare)
{
   std::cout << "test container, predicate\n";

   test(cont.begin(), cont.end(), compare);
}

template<class container>
class adapter
{
public:
   typedef typename container::iterator   iterator;

   adapter(container* cont) : cont(cont)
   { }

   iterator begin() const
   { return cont->begin(); }

   iterator end() const
   { return cont->end(); }

   bool operator()(const iterator& one, const iterator& two)
   { return *one < *two; }

private:
   container* cont;
};

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

   adapter<std::vector<int>>   a(&v);

   test(a, a);

}