title: Haxe iteration on Dynamic
body: <p>I have a variable of type <code>Dynamic</code> and I know for sure one of its fields, lets call it <code>a</code>, actually is an array. But when I'm writing </p>
  
  <pre><code>var d : Dynamic = getDynamic();
  for (t in d.a) {
  }
  </code></pre>
  
  <p>I get a compilation error on line two:</p>
  
  <blockquote>
    <p>You can't iterate on a Dynamic value, please specify Iterator or Iterable</p>
  </blockquote>
  
  <p>How can I make this compilable?</p>