e all the 3's from the list</span>
list.removeAll(<span class="hljs-number">3</span>);

<span class="hljs-comment">// will log [1, 1, 2, 4, 4, 5, 6]</span>
<span class="hljs-built_in">console</span>.log(list.values());

<span class="hljs-comment">// will log false</span>
<span class="hljs-built_in">console</span>.log(list.has(<span class="hljs-number">3</span>));

<span class="hljs-comment">// will log true</span>
<span class="hljs-built_in">console</span>.log(list.has(<span class="hljs-number">4</span>));
