eyword">val</span> equal_subst : <span><a href="#type-subst">subst</a> <span class="arrow">&#45;&gt;</span></span> <span><a href="#type-subst">subst</a> <span class="arrow">&#45;&gt;</span></span> bool</span></code></div><div class="spec-doc"><p>Equality for substitutions.</p></div></div><div class="odoc-spec"><div class="spec value" id="val-subst_of_list" class="anchored"><a href="#val-subst_of_list" class="anchor"></a><code><span><span class="keyword">val</span> subst_of_list : <span><span><span>(<a href=