title: Swift 3.0: delay of less than a second
body: <p>I'm trying to make a delay of less than a second. I found this code from the web. It doesn't however accept delays of less than a second. The Grand Dispatch Concept in Swift is a bit of a mystery to me. How should I modify this code to create a delay of 0.3 seconds?</p>
  
  <pre><code>    let deadlineTime = DispatchTime.now() + .seconds(1) //how to get 0.3 seconds here
      DispatchQueue.main.asyncAfter(deadline: deadlineTime) {        
        //code here
      }
  </code></pre>