t collapse in" id="comment-isSubset_of-0aaacd211eef11273664bb09ea6b1ec4"><p>Returns a Boolean value that indicates whether the set is a subset of
another set.</p>
<p>Set <em>A</em> is a subset of another set <em>B</em> if every member of <em>A</em> is also a
member of <em>B</em>.</p>
<pre><code class="language-swift">let employees: Set = [&quot;Alicia&quot;, &quot;Bethany&quot;, &quot;Chris&quot;, &quot;Diana&quot;, &quot;Eric&quot;]
let attendees: Set = [&quot;Alicia&quot;, &quot;Bethany&quot;, &quot;Diana