title: iOS - Is saving to UserDefaults synchronous?
body: <p>Are operations on UserDefaults synchronous? For example does the second save wait for the first save to finish?</p>
  
  <pre><code>UserDefaults.standard.set(myValue1, forKey: "myValue1")
  UserDefaults.standard.set(myValue2, forKey: "myValue2")
  </code></pre>