title: How do I declare a class level function in Swift?
body: <p>I can't seem to find it in the docs, and I'm wondering if it exists in native Swift.  For example, I can call a class level function on an <code>NSTimer</code> like so:</p>
  
  <pre><code>NSTimer.scheduledTimerWithTimeInterval(0.2, target: self, selector: "someSelector:", userInfo: "someData", repeats: true)
  </code></pre>
  
  <p>But I can't seem to find a way to do it with my custom objects so that I could call it like:</p>
  
  <pre><code>MyCustomObject.someClassLevelFunction("someArg")
  </code></pre>
  
  <p>Now, I know we can mix Objective-C w/ Swift and it's possible that the <code>NSTimer</code> class method is a remnant from that interoperability.</p>
  
  <h3> Question </h3>
  
  <ol>
  <li><p>Do class level functions exist in Swift?</p></li>
  <li><p>If yes, how do I define a class level function in Swift?</p></li>
  </ol>