title: How to use QStringView (or QStringRef) in Qt widgets?
body: <p>I'm trying to replace heavy <code>QString</code> class with the lighter alternatives (<code>QStringRef</code>/<code>QStringView</code>). The problem is that Qt widgets don't consume these classes by any mean. For example, the <code>QLabel::setText</code> method requires <code>const QString&amp;</code> as an input parameter, making my improvement useless.</p>
  <p>I'm confused with this discrepancy. Is that on purpose? Is there any reason for that? What should be the use case for <code>QStringView</code> if at the end of the day no one consumes them?</p>