title: How to make Playground execution time is as fast as if we run in iOS application
body: <p>I see that playground execution speed is not reliable. For example with a code:</p>
  
  <pre><code>import UIKit
  var count = 0;
  
  let startTime = NSDate()
  for i in 1...10000 {
     count++
  }
  let endTime = NSDate()
  
  let interval = endTime.timeIntervalSinceDate(startTime)
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/lAM0I.png" alt="enter image description here"></p>
  
  <p>the value of <code>interval</code> is about 2s, which is not reliable. 
  With the release of Swift 2.0 &amp; XCode beta 7, is it possible to make swift playground code execute as fast as in iOS application?</p>