title: How do I get from an instance of a class to a Class object in ActionScript 3?
body: <p>How do you get an instance of the actionscript class <code>Class</code> from an instance of that class?</p>
  
  <p>In Python, this would be <code>x.__class__</code>; in Java, <code>x.getClass();</code>.</p>
  
  <p>I'm aware that <a href="http://actionscript.org/forums/showthread.php3?t=120135#td_post_545693" rel="noreferrer">certain terrible hacks</a> exist to do this, but I'm looking for a built-in language facility, or at least a library routine built on something reliable.</p>