ck_assigned"><a href="#val-check_assigned" class="anchor"></a><code><span><span class="keyword">val</span> check_assigned : <span><span><a href="Shape/Type/index.html#type-attr">Shape.Type.attr</a> <a href="../../../../../../../Owl_graph/index.html#type-node">Owl_graph.node</a></span> <span class="arrow">&#45;&gt;</span></span> unit</span></code></div><div class="spec-doc"><p><code>check_assigned node</code> throws an exception if <code>node</code> has not been assigned to a block.</p></div></div><div class