ode></pre>
<ul>
<li>Parameter other: A set of the same type as the current set.</li>
</ul>
<h4>Declaration</h4><code class="language-swift">mutating func formUnion(_ other: Self)</code></div></div><div id="insert-85d6bafa09e62d45b6afb5b77af4aa69" class="declaration"><a class="toggle-link" href="#comment-insert-85d6bafa09e62d45b6afb5b77af4aa69">func insert(_ newMember: Self.Element) -> (inserted: Bool, memberAfterInsert: Self.Element)</a> <span class="required">Required</span><div class="comment collapse in"