pan class="type-var">'a</span> <span class="arrow">&#45;&gt;</span></span> <span class="type-var">'a</span>)</span> <span class="arrow">&#45;&gt;</span></span>
  <span><span><span class="type-var">'a</span> <a href="#type-t">t</a></span> <span class="arrow">&#45;&gt;</span></span>
  <span><span><span>(<span class="xref-unresolved">Z</span>.t * <span class="type-var">'a</span>)</span> <span class="xref-unresolved">CCHashtbl</span>.iter</span> <span class="arrow">&#45;&gt;</span></span>
  unit</span></code></