Checkpoint iterator model using raw reverse iterators (working)

checkpoint_iterator1.cpp

#include <iostream>
#include <vector>

void print(const std::vector<int>& v) {
  std::cout << "[";
  for (auto& e : v) {
    std::cout << e << " ";
  }
  std::cout << "]\n";
}

void getItemsForCursor(const std::vector<int>& v, std::vector<int>::reverse_iterator& rit) {
  do {
    rit--;
    std::cout << *rit << " ";
  } while (rit != v.rbegin());
  std::cout << "\n";
}

int main() {
  std::vector<int> v;
  // Initially populate with 2 elements
  v.push_back(1);
  v.push_back(2);
  v.push_back(3);
  print(v);

  // Creatre reverse_iterator to start (rend), advance backwards
  auto rit = v.rend();
  std::cout << "Iterate 1:\n";
  getItemsForCursor(v, rit);

  v.push_back(4);
  print(v);
  
  std::cout << "Iterate 2:\n";
  getItemsForCursor(v, rit);
}