</dt><dd><p>Return offset of the array block. If <code>cost_mode</code> is <code>true</code>, it returns a conservative (bigger than correct one), but not correct offset results.</p></dd></dl><dl><dt class="spec value" id="val-get_size"><a href="#val-get_size" class="anchor"></a><code><span class="keyword">val</span> get_size : <span>?&#8288;cost_mode:bool</span> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <a href="../BO/Itv/index.html#type-t">BO.Itv.t</a></code></dt><dd>