="type-var">'a</span> <a href="index.html#type-t">t</a></span> <span>&#45;&gt;</span> <span><span class="type-var">'a</span> <a href="index.html#type-t">t</a></span> <span>&#45;&gt;</span> int</code></dt><dt class="spec value" id="val-hash_fold_t"><a href="#val-hash_fold_t" class="anchor"></a><code><span class="keyword">val</span> hash_fold_t : <span>(Base__.Ppx_hash_lib.Std.Hash.state <span>&#45;&gt;</span> <span class="type-var">'a</span> <span>&#45;&gt;</span> Base__.Ppx_hash_lib.Std.Hash.state)</span> <