t">t</a></code></dt><dt class="spec value" id="val-compare_size"><a href="#val-compare_size" class="anchor"></a><code><span class="keyword">val</span> compare_size : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> int</code></dt><dt class="spec value" id="val-merge"><a href="#val-merge" class="anchor"></a><code><span class="keyword">val</span> merge : <span>from:<a href="index.html#type-t">t</a></span> <span>&#45;&gt;</span> <span>to_:<a href