class="anchor"></a><code><span><span class="keyword">val</span> fold_nodes : <span><span>(<a href="#type-t">t</a>, <a href="Node/index.html#type-t">Node.t</a>, <span class="type-var">'accum</span>)</span> <span class="xref-unresolved">IStdlib</span>.IStd.Container.fold</span></span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-from_pdesc"><a href="#val-from_pdesc" class="anchor"></a><code><span><span class="keyword">val</span> from_pdesc : <span><a href="../../../../../I