title: How to disable Auto Save in Xcode 4.6?
body: <p>I tried to no avail</p>
  
  <pre><code>defaults write com.apple.Xcode ApplePersistence -bool NO
  defaults write com.apple.dt.Xcode ApplePersistence -bool NO
  </code></pre>
  
  <p>The "Ask to keep changes when closing documents" option from 4.2 has been removed, <a href="https://discussions.apple.com/message/20435985#20435985" rel="nofollow">https://discussions.apple.com/message/20435985#20435985</a>.</p>