accommodate the new element.
</p>
<pre class="mendoza-codeblock"><code data-language="janet">(<span class="mdzsyn-coresym">def</span> <span class="mdzsyn-symbol">arr</span> @[])
(<span class="mdzsyn-coresym">put</span> <span class="mdzsyn-symbol">arr</span> <span class="mdzsyn-number">0</span> <span class="mdzsyn-keyword">:hello</span>) <span class="mdzsyn-comment"># -&gt; @[:hello]</span>
(<span class="mdzsyn-coresym">put</span> <span class="mdzsyn-symbol">arr</span> <span class="mdzsyn-number">2</span> <s