title: po in LLDB with swift
body: <p>How can I plot out variable's value in a Swift App with LLDB?</p>
  
  <p>Earlier it was like <code>po variable_name</code></p>
  
  <p>Now I usually get some nasty error, like:</p>
  
  <pre><code>(lldb) po a
  error: &lt;EXPR&gt;:11:5: error: use of unresolved identifier '$__lldb_injected_self'
      $__lldb_injected_self.$__lldb_wrapped_expr_2(     
      ^
  </code></pre>