dart-core/bool-class.html">bool</a></span>
          </span>
                  </dt>
        <dd>
          Returns <code>true</code> if the value of this Duration
is less than or equal to the value of <code>other</code>.
                  
</dd>
        <dt id="operator ==" class="callable">
          <span class="name"><a href="dart-core/Duration/operator_equals.html">operator ==</a></span><span class="signature">(<wbr><span class="parameter" id="==-param-other"><span class="type-annotation">dynamic</span