>(<span class="parameter" id="param-element"><span class="type-annotation"><a href="../dart-core/int-class.html">int</a></span> <span class="parameter-name">element</span></span><wbr>), </span><wbr><span class="parameter" id="firstWhere-param-orElse">{<span class="type-annotation"><a href="../dart-core/int-class.html">int</a></span> <span class="parameter-name">orElse</span>()}</span><wbr>)
            <span class="returntype parameter">&#8594; <a href="../dart-core/int-class.html">int</a></span>
          