title: How can I get a "Any?" variable's real type in Swift
body: <p>I get property list from Mirror.children, it returns (label: String?, value: Any).
  How can i get every value's real type.</p>
  
  <pre><code>var a: Int = 1
  var b: Int? = nil
  var c: Any?
  
  c = a
  getType(c) -&gt; "Int"
  
  c = b
  getType(c) -&gt; "Optional&lt;Int&gt;"
  </code></pre>