l,
      and what you might be able to do to get around the restriction.</em></span></span>&#8221;</span>
    </p>
<p>
      <span class="quote">&#8220;<span class="quote"><span class="emphasis"><em>In 1997, shortly before the C++ Standard was completed, the
      standardization committee received a query: Is it possible to create standard
      containers with incomplete types? It took a while for the committee to understand
      the question. What would such a thing even mean, and why on earth would you