title: Property with type SEL in Objective-c
body: <p>I'd like to declare a property with type <code>SEL</code> like this:</p>
  
  <pre><code>@property (nonatomic, assign) SEL mySelector;
  </code></pre>
  
  <p>Is "<code>assign</code>" correct here? Perhaps <code>assign</code> can be omitted?</p>