ref="#val-degree" class="anchor"></a><code><span class="keyword">val</span> degree : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><a href="../Degree/index.html#type-t">Degree.t</a> option</span></code></dt><dt class="spec value" id="val-degree_str"><a href="#val-degree_str" class="anchor"></a><code><span class="keyword">val</span> degree_str : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> string</code></dt><dt class="spec value" id="val-compare_by_degree"><a href="#val-compare_b