"><div class="p">
    <p>Advance to the next element and return it, or <code>nil</code> if no next
element exists.</p>

<p>Requires: no preceding call to <code>self.next()</code> has returned <code>nil</code>.</p>

    <h4>Declaration</h4>    
    <code class="language-swift">mutating func next() -&gt; Element?</code>
    
    
</div></div>
</div>


