title: How to use QVector at or operator[] to get a pointer to the element
body: <p>I would love to get a pointer to a <code>QVector</code> element so I can use that object elsewhere however the <code>at()</code> method gives me a <code>const T&amp;</code> value and the <code>operator[]</code> gives me a <code>T&amp;</code> value.</p>
  
  <p>I'm confused on how to use these to get a pointer so that I will use the same object instead of using a copy constructor.</p>