he number of elements in
<code>self</code>, <em>nondestructively</em>.</p>

<p><strong>Complexity:</strong> O(N).</p>

    <h4>Declaration</h4>    
    <code class="language-swift">func underestimateCount() -&gt; Int</code>
    
        <h4>Declared In</h4>
        <a href="../../protocol/CollectionType/"><code>CollectionType</code></a>,    <a href="../../protocol/SequenceType/"><code>SequenceType</code></a>    
</div></div>
</div>







<h4>Where Generator == IndexingGenerator<Self></h4>




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