y`(dest: var Once; source: Once)</a></li>

</ul>
<ul class="simple nested-toc-section">=destroy
  <li><a class="reference" href="#%3Ddestroy%2COnce" title="`=destroy`(o: Once)">`=destroy`(o: Once)</a></li>

</ul>
<ul class="simple nested-toc-section">=dup
  <li><a class="reference" href="#%3Ddup%2COnce" title="`=dup`(source: Once): Once">`=dup`(source: Once): Once</a></li>

</ul>
<ul class="simple nested-toc-section">=sink
  <li><a class="reference" href="#%3Dsink%2COnce%2COnce" title="`=sink`(dest: var Onc