n>string <span class="arrow">&#45;&gt;</span></span> <span>char array</span></span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-find"><a href="#val-find" class="anchor"></a><code><span><span class="keyword">val</span> find : <span><span class="optlabel">?start</span>:int <span class="arrow">&#45;&gt;</span></span> <span><span class="label">sub</span>:string <span class="arrow">&#45;&gt;</span></span> <span>string <span class="arrow">&#45;&gt;</span></span> int</span></c