title: Swift Boolean Literals (Obj-C @YES @NO equivalent)
body: <p>In Objective-C, you can type <code>@YES</code> instead of <code>[NSNumber numberWithBOOL:YES]</code>. This makes for much tidier code.</p>
  
  <p>In Swift, I'm having to write <code>NSNumber.numberWithBool(true)</code>, which is kind of ugly.</p>
  
  <p>Is there an equivalent to <code>@YES</code> and <code>@NO</code> in Swift?</p>
  
  <p>Thanks in advance for your help!</p>