title: How to change Button text size in iOS 8 swift
body: <p>I have got a button with a layout <code>outletLeaderboard</code>.
  I want to change his text size by the code, so this is what I wrote:</p>
  
  <pre><code>outletLeaderboard.font =  UIFont(name: outletLeaderboard.font.fontName, size: 37)
  </code></pre>
  
  <p>and then I get an error:</p>
  
  <blockquote>
    <p>'font' is unavailable: APIs deprecated as of iOS 7 and earlier are
    unavailable in Swift</p>
  </blockquote>
  
  <p>What is the correct line I need to write?</p>