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


<h3>Conditionally Inherited Items</h3>

<p class="comment">The initializers, methods, and properties listed below may be available on this type under certain conditions (such as methods that are available on <code>Array</code> when its elements are <code>Equatable</code>) or may no