title: Create an array of another array subelements in one line
body: <p>Like this</p>
  
  <pre><code>oldArray = [[a, b, c, d],[e, f, g, h]]
  </code></pre>
  
  <p>I need one line of code that will return a new array of, say, element 2 in each element of oldArray</p>
  
  <pre><code>newArray = coolLine(oldArray, 2)
  
  newArray -&gt; [c, g]
  </code></pre>