title: Looping over multiple lists with base R
body: <p>In python we can do this..</p>
  
  <pre><code>numbers = [1, 2, 3]
  characters = ['foo', 'bar', 'baz']
  
  for item in zip(numbers, characters):
      print(item[0], item[1])
  
  (1, 'foo')
  (2, 'bar')
  (3, 'baz')
  </code></pre>
  
  <p>We can also unpack the tuple rather than using the index.</p>
  
  <pre><code>for num, char in zip(numbers, characters):
      print(num, char)
  
  (1, 'foo')
  (2, 'bar')
  (3, 'baz')
  </code></pre>
  
  <p>How can we do the same using base R?</p>