title: Swift: How to convert String to UInt?
body: <p>According to <a href="https://stackoverflow.com/questions/24115141/swift-converting-string-to-int">Swift - Converting String to Int</a>, there's a <code>String</code> method <code>toInt()</code>.</p>
  
  <p>But, there's no <code>toUInt()</code> method. So, how to convert a <code>String</code> to a <code>Uint</code>?</p>