title: Converting from Int to String Swift 2.2
body: <p>Dears</p>
  
  <p>I have this case where chatId is a property of type Int</p>
  
  <pre><code>let StringMessage = String(self.listingChat?.messages.last?.chatId)
  </code></pre>
  
  <p>When I debug I find that <em>StringMessage</em> is returning <strong>Optional</strong>(15) Which means it is unwrapped. But at the same time XCode does not allow me to put any bangs (!) to unwrap it. So I am stuck with Unwrapped Variable. I know its noob question but it I really cant get it. Your help is appreciated.</p>
  
  <p>Thank you</p>