title: Create a Setter Only in Swift
body: <p>When I create a setter such as:</p>
  <pre><code>var masterFrame: CGRect {
      set {
          _imageView.frame = newValue
          _scrollView.frame = newValue
      }
  }
  </code></pre>
  <p>It's forcing me to make a getter, which I don't want to do.</p>
  <p>Is there any way to create a setter in Swift without a getter?</p>