title: `scanFloat` was deprecated in iOS 13.0
body: <p>method <code>scanFloat</code> was deprecated in iOS 13.0,</p>
  <blockquote>
  <p><code>func scanFloat(_ result: UnsafeMutablePointer&lt;Float&gt;?) -&gt; Bool</code></p>
  </blockquote>
  <blockquote>
  <p>Scans for a float value, returning a found value by reference.</p>
  </blockquote>
  <p>I can use <code>for loop</code> to solve it.</p>
  <p>any other advice?</p>