title: How to get Integer from button title
body: <p>I have a Button labeled "3x3" now I want to create an Int variable with the value "3" in button click function.</p>
  
  <p>I have tried </p>
  
  <pre><code>let newBoardSizeString = String.localizedStringWithFormat("\(sender.currentTitle?.characters.first)")
  let newBoardSize = Int(newBoardSizeString)
  </code></pre>
  
  <p>The string i get is like this </p>
  
  <pre><code>"Optional(\"3\")"
  </code></pre>
  
  <p>and Int I get is </p>
  
  <pre><code>nil
  </code></pre>
  
  <p>I want only 3</p>