erator-element-throws-t">
<a class="toggle-link" data-toggle="collapse" href="#comment-func-flatmap-t_-self-generator-element-throws-t">func flatMap&lt;T&gt;(<wbr>_: (Base._Element) throws -&gt; T?)</a>
        
<div class="comment collapse" id="comment-func-flatmap-t_-self-generator-element-throws-t"><div class="p">
    <p>Return an <code>Array</code> containing the non-nil results of mapping
<code>transform</code> over <code>self</code>.</p>

<p><strong>Complexity:</strong> O(<em>M</em> + <em>N</em>), whe