ass="multi-line-signature">
          <span class="returntype"><a href="dart-core/int-class.html">int</a></span>
                  <span class="name ">length</span>
          <div class="features">inherited</div>
</section>
        
                <section class="desc markdown">
          <p>Returns the number of elements in the iterable.</p>
<p>This is an efficient operation that doesn't require iterating through
the elements.</p>
        </section>
                <section class="summary source-code" id=