title: Printing value of a optional variable includes the word "Optional" in Swift
body: <p>.I am new to iOS and to Swift
  In my application I'm trying to print an optional value and it prints "Optional(value of the variable)"
  How do I remove this word <strong>optional</strong></p>
  
  <pre><code>var bDay = StringUtils.convertDateToString(birthDate, format: Constants.BIRTHDAY_FORMAT)
  let age = self.clientDetail?.getAge()
  println("age.....\(age)")
  bDay += "\(age)"
  </code></pre>
  
  <p>The output in the console is</p>
  
  <pre><code>age.....Optional(29)
  </code></pre>
  
  <p>I'm trying to assign this variable to a UILabel but on screen it shows up like 
  <strong>Sep 17, 1986 Optional(29)</strong></p>
  
  <p>My objective is to remove this optional word and make it appear like
  <strong>Sep 17, 1986(29)</strong></p>
  
  <p>Thanks in advance</p>