 a start node of a code block.</p></dd></dl><dl><dt class="spec value" id="val-is_dangling"><a href="#val-is_dangling" class="anchor"></a><code><span class="keyword">val</span> is_dangling : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> bool</code></dt><dd><p>Returns true if the node is dangling, i.e. no successors and predecessors</p></dd></dl><dl><dt class="spec value" id="val-hash"><a href="#val-hash" class="anchor"></a><code><span class="keyword">val</span> hash : <a href="index.html#type-t">