tps://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html">Int</a><span class="clearfix"><span class="floating-right">(<a href="https://github.com/mhss1/kubit/blob/main/kubit/src/commonMain/kotlin/kubit/collections/list/LongList.kt#L445">source</a>)</span></span></div><p class="paragraph">Returns the index if the first element in the <a href="index.html">LongList</a> for which <a href="index-of-first.html">predicate</a> returns <code class="lang-kotlin">true</code>.</p></div></div>
</div>
    <div 