s="arrow">&#45;&gt;</span></span> <span class="type-var">'a</span> * <span class="type-var">'b</span></span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-collect_rvs"><a href="#val-collect_rvs" class="anchor"></a><code><span><span class="keyword">val</span> collect_rvs : 
  <span><span><span><a href="Optimiser/Operator/Symbol/Shape/Type/index.html#type-attr">Optimiser.Operator.Symbol.Shape.Type.attr</a> <a href="../../../Owl_graph/index.html#type-node">Owl_graph.node</a>