>Returns a Boolean value indicating whether the value of the first
argument is less than that of the second argument.</p>
<p>This function is the only requirement of the <code>Comparable</code> protocol. The
remainder of the relational operator functions are implemented by the
standard library for any type that conforms to <code>Comparable</code>.</p>
<h4>Declaration</h4><code class="language-swift">public static func &lt;(lhs: Unicode.CanonicalCombiningClass, rhs: Unicode.CanonicalCombiningClass) -> Bool</