s="anchor"></a><code><span><span class="keyword">val</span> is_empty : <span>string <span class="arrow">&#45;&gt;</span></span> bool</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-hash"><a href="#val-hash" class="anchor"></a><code><span><span class="keyword">val</span> hash : <span>string <span class="arrow">&#45;&gt;</span></span> int</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-rev"><a href="#val-rev" class="anchor"></a>