="type">T</span>&nbsp;&#8209;&gt;&nbsp;<a class="type" title="Bool - The standard Boolean type, which can either be true or false." href="./Bool.html">Bool</a></span>):<a class="type" title="Array" href="./Array.html">Array</a>&lt;<span class="type">T</span>&gt;</code></h3><div class="doc"><p>Returns an Array containing those elements of <code>this</code> for which <code>f</code>
returned true.</p>
<p>The individual elements are not duplicated and retain their identity.</p>
<p>If <code>f</code> is null, the