title: Remove Optional("string") in Swift 2
body: <p>I have a problem for concatenate different String in one String. The code works, but I have a word that is inserted between each of my Strings. Thank you in advance for your response.</p>
  
  <pre><code>let locality = String(self.locality)
  let postalCode = String(self.postalCode)
  let administrativeArea = String(self.administrativeArea)
  let country = String(self.country)
  
  let addressFull = locality + ", " + postalCode + " " + administrativeArea + ", " + country
  print(addressFull)
  </code></pre>
  
  <p>Output</p>
  
  <pre><code>Optional("..."), Optional("...") Optional("..."), Optional("...")
  </code></pre>