title: Swift double to string
body: <p>Before I updated xCode 6, I had no problems casting a double to a string but now it gives me an error</p>
  
  <pre><code>var a: Double = 1.5
  var b: String = String(a)
  </code></pre>
  
  <p>It gives me the error message "double is not convertible to string". Is there any other way to do it?</p>