title: swift How to cast from Int? to String
body: <p>In Swift, i cant cast Int to String by:</p>
  
  <pre><code>var iString:Int = 100
  var strString = String(iString)
  </code></pre>
  
  <p>But my variable in Int? , there for error: <code>Cant invoke 'init' with type '@Ivalue Int?'</code>  </p>
  
  <p>Example</p>
  
  <pre><code>let myString : String = "42"
  let x : Int? = myString.toInt()
  
  if (x != null) {
      // Successfully converted String to Int
      //And how do can i convert x to string???
  }
  </code></pre>