f="dart-core/bool-class.html">bool</a></span> <span class="parameter-name">equals</span>(<span class="parameter" id="equals-param-previous"><span class="type-annotation">T</span> <span class="parameter-name">previous</span>, </span> <span class="parameter" id="equals-param-next"><span class="type-annotation">T</span> <span class="parameter-name">next</span></span>)</span> ])
            <span class="returntype parameter">&#8594; <a href="dart-async/Stream-class.html">Stream</a><span class="signature">&lt;<a