title: Zip or enumerate in R?
body: <p>What are the R equivalents for these Python list comprehensions:</p>
  
  <pre><code>[(i,j) for i,j in zip(index, Values)]
  [(i,j) for i,j in enumerate(Values)]
  [(i,j) for i,j in enumerate(range(10,20))]   %MWE, indexing or enumerating to 
                                              %keep up with the index, there may 
                                              %be some parameter to look this up
  </code></pre>
  
  <p><strong>Example with Output</strong></p>
  
  <pre><code>&gt;&gt;&gt; [(i,j) for i,j in enumerate(range(10,20))]
  [(0, 10), (1, 11), (2, 12), (3, 13), (4, 14), (5, 15), (6, 16), (7, 17), (8, 18), (9, 19)]
  </code></pre>
  
  <p>I have solved this problem earlier with some trick in R but cannot remember anymore, the first idea was itertools -pkg but I am hoping to find a more idiomatic way of doing things. </p>