span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-hash_fold_t"><a href="#val-hash_fold_t" class="anchor"></a><code><span><span class="keyword">val</span> hash_fold_t : 
  <span><span>(<span><span class="xref-unresolved">Base_internalhash_types</span>.state <span class="arrow">&#45;&gt;</span></span> <span><span class="type-var">'a</span> <span class="arrow">&#45;&gt;</span></span> <span class="xref-unresolved">Base_internalhash_types</span>.state)</span> <span class="ar