nt = CodeUnit</code>
<div class="comment">
    <p><em>Type alias inferred.</em></p>
</div>
</div>
<div class="declaration">
<code class="language-swift">Index = String.UTF16View.Index</code>
<div class="comment">
    <p><em>Type alias inferred.</em></p>
</div>
</div>
<div class="declaration">
<code class="language-swift">SubSequence = String.UTF16View</code>
<div class="comment">
    <p><em>Type alias inferred.</em></p>
</div>
</div>
</td>
</tr>

<tr>
<th>Nested Types</th>
<td><code class="nested">String.UT