e. If <code>a</code> and <code>b</code> are incomparable, and <code>b</code>
and <code>c</code> are incomparable, then <code>a</code> and <code>c</code> are also incomparable.
(Transitive incomparability)</li></ul>

<p>This example shows how to use the <code>min(by:)</code> method on a
dictionary to find the key-value pair with the lowest value.</p>

<pre><code class="language-swift">let hues = [&quot;Heliotrope&quot;: 296, &quot;Coral&quot;: 16, &quot;Aquamarine&quot;: 156]
let leastHue = hues.min { a, b i