val-hash_normalize_opt" class="anchor"></a><code><span><span class="keyword">val</span> hash_normalize_opt : <span><span><a href="#type-t">t</a> option</span> <span class="arrow">&#45;&gt;</span></span> <span><a href="#type-t">t</a> option</span></span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-hash_normalize_list"><a href="#val-hash_normalize_list" class="anchor"></a><code><span><span class="keyword">val</span> hash_normalize_list : <span><span><a href="#type-t">t</a