text: const movies = [
    {name: 'La La Land', year: 2016},
    {name: 'Deadpool', year: 2016},
    {name: 'Ant-Man', year: 2015}
  ];
  
  /*
   * Create a generator "loop"
   * Generators are functions which can be exited and later re-entered to where it 
   * was left off.
   */
  function* loop (arr) {
    console.log('first call!');
    for (const item of arr) {
      yield item;
    }
  }
  
  const movieGenerator = loop(movies);
  console.log(movieGenerator.next()); 
  // first call!
  // Object {"done":false, "value":Object {"name": "La La Land",..}}
  console.log(movieGenerator.next());
  // Object {"done":false, "value":Object {"name": "Deadpool",..}}
  console.log(movieGenerator.next());
  // Object {"done":false, "value":Object {"name": "Ant-Man",..}}
  console.log(movieGenerator.next());
  // Object {"done":true, "value": undefined}
  