f="#type-id" class="anchor"></a><code><span><span class="keyword">type</span> id</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-compare_id"><a href="#val-compare_id" class="anchor"></a><code><span><span class="keyword">val</span> compare_id : <span><a href="#type-id">id</a> <span class="arrow">&#45;&gt;</span></span> <span><a href="#type-id">id</a> <span class="arrow">&#45;&gt;</span></span> int</span></code></div></div><div class="odoc-spec"><div class="spec value 