> get_block_id : <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> int</span></code></div><div class="spec-doc"><p><code>get_block_id node</code> returns the id of the block assigned to <code>node</code>. If <code>node</code> has not been assigned yet, returns <code>-1</code>.</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val