title: Int vs Integer in Swift
body: <p>Does anyone know what the difference is between these two types?</p>
  
  <p>The docs only refer to <code>Int</code> but Xcode 6 auto complete only gives me <code>Integer</code> when I type.  I started using <code>Integer</code> when porting code only to find that you have to cast between the two types.</p>
  
  <p>For instance the following code gives the error <em>Could not find an overload for '+' that accepts the supplied arguments</em>.</p>
  
  <pre><code>var number1 : Int = 5
  var number2 : Integer = 10
  number1 + number2
  </code></pre>