title: Extra argument 'selector' in call - NSTimer scheduledTimerWithTimeInterval
body: <p>I have the following line of code:</p>
  
  <pre><code>changeColour = NSTimer.scheduledTimerWithTimeInterval(TIMES, target: self, selector: "changeColourOfPage", repeats: true)
  </code></pre>
  
  <p>but it gives the error "Extra argument 'selector' in call"</p>
  
  <p>when I change the <code>TIMES</code> variable to a number like <code>1.0</code>, it works fine. The variable <code>TIMES</code> is set to <code>1.0</code>.</p>
  
  <p>Is this just a glitch, or am I being stupid about something?
  I need to use it to run a method at random intervals.</p>
  
  <p>Please help!</p>