title: `po` gives `error: <EXPR>:1:1: error: use of unresolved identifier`
body: <p>I have this problem with <code>po</code> in the console where trying to output a function works in itself, but outputting a variable or constant doesn't.</p>
  
  <p><img src="https://i.stack.imgur.com/G8qC1.png" alt="first result is for &lt;code&gt;po bar.boy()&lt;/code&gt;, second says &lt;code&gt;unresolved&lt;/code&gt;"></p>
  
  <p>As you can see here, although you'd think the var/let holds the content of <code>bar.boy()</code>, Swift somehow can't find it...</p>