#include <iostream>
#include <vector>
using namespace std;
 
#define METHOD(NAME, ...) auto NAME __VA_ARGS__ -> decltype(m_T.r##NAME) { return m_T.r##NAME; }
template<typename T>
struct Reverse
{
  T& m_T;
 
  METHOD(begin());
  METHOD(end());
  METHOD(begin(), const);
  METHOD(end(), const);
};
#undef METHOD
 
template<typename T>
Reverse<T> MakeReverse (T& t) { return Reverse<T>{t}; }
 
int main ()
{
  vector<int> v = {0, 1, 2, 3, 4, 5}; 
 
  cout << "\nForward: ";
  for(auto& i : v)
    cout << i << ", ";
 
  cout << "\nReverse: ";
  for(auto& i : MakeReverse(v))
    cout << i << ", ";
}
 

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