product_iterator_test.cpp

// The MIT License (MIT)
//
// Copyright (c) 2017 Sun Aries
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//

#include <product_iterator.hpp>
#include <iterator_proxy.hpp>

#include <vector>
#include <iostream>

using namespace std;

int main(int argc, char** argv)
{

  vector<int> c1({1,2});
  vector<int> c2({3,4});
  vector<int> c3({5,6,7,8});
  auto it = make_product_iterator(c1, c2, c3);
  auto end = it.get_end();
  for (; it != end; ++it) {
    // Provides a std::tuple<int,char> with the values from the constructor
    *it;
    // Access to a single element of the tuple is optimized and the following
    // comparison always holds
    // it.get<0>() == std::get<0>(*it);
    std::cout << "a contains: " << std::get<0>(*it);
    std::cout << " and " << std::get<1>(*it);
    std::cout << " and " << std::get<2>(*it) << '\n';  
  }

  return 0;
}