o the ability to produce one value from
the other through zero or more applications of <code>index(after:)</code>.</p>
</div>
</div>
<div class="declaration inherited">
<code class="language-swift">Index : Comparable</code>
<div class="comment">
    <p>A type that represents a position in the collection.</p>

<p>Valid indices consist of the position of every element and a
&quot;past the end&quot; position that&#39;s not valid for use as a subscript
argument.</p>

<p><strong>See Also:</strong> endIndex</p>
<