f" class="declaration"><a class="toggle-link" href="#comment-decimal-bdaa3c20a3e3851599514f7c6be5f62f">case decimal</a> <span class="required">Required</span><div class="comment collapse in" id="comment-decimal-bdaa3c20a3e3851599514f7c6be5f62f"><p>A digit that is commonly understood to form base-10 numbers.</p>
<p>Specifically, scalars have this numeric type if they occupy a contiguous
range of code points representing numeric values <code>0...9</code>.</p>
<h4>Declaration</h4><code class="language-swift">c