class="spec value" id="val-compare_violation"><a href="#val-compare_violation" class="anchor"></a><code><span class="keyword">val</span> compare_violation : <a href="index.html#type-violation">violation</a> <span>&#45;&gt;</span> <a href="index.html#type-violation">violation</a> <span>&#45;&gt;</span> int</code></dt></dl></div></div></div><dl><dt class="spec type" id="type-type_role"><a href="#type-type_role" class="anchor"></a><code><span class="keyword">type</span> type_role</code><code> = </code><table c