pan><span class="keyword">val</span> exists_str : <span><span class="label">f</span>:<span>(<span>string <span class="arrow">&#45;&gt;</span></span> bool)</span> <span class="arrow">&#45;&gt;</span></span> <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> bool</span></code></div></div></div></body></html>
