title: Swift error: guard body must not fall through
body: <p>I have the following <code>guard</code> statement, which is producing an error. What's wrong?</p>
  
  <pre><code>guard NSFileManager.defaultManager().fileExistsAtPath(appBundlePath) else {
      print("App bundle doesn't exist")
  }
  </code></pre>
  
  <blockquote>
    <p>error: 'guard' body may not fall through</p>
    
    <p>error: 'guard' body must not fall through, consider using a 'return' or 'throw' to exit the scope</p>
  </blockquote>