>
<p>Complexity:
O(<em>n</em>), where <em>n</em> is the length of the sequence.</p>
</blockquote>
<h4>Declaration</h4><code class="language-swift">@inlinable public func filter(_ isIncluded: (Self.Element) throws -> Bool) rethrows -> [Self.Element]</code></div></div><div id="first_where-3ff63b14d77bfe6b38a0c859ea31446a" class="declaration"><a class="toggle-link" href="#comment-first_where-3ff63b14d77bfe6b38a0c859ea31446a">func first(where predicate: (Self.Element) throws -> Bool) rethrows -> Self.Element?</