rtIndex</code>.
<strong>Returns:</strong> The index value immediately before <code>i</code>.</p>

    <h4>Declaration</h4>    
    <code class="language-swift">func index(before i: Self.Index) -&gt; Self.Index</code>
    
    
</div></div>
</div>


<h3>Default Implementations</h3>






<div class="declaration inherited" id="subscript--subscript_-closedrange-self-index">
<a class="toggle-link" data-toggle="collapse" href="#comment-subscript--subscript_-closedrange-self-index">subscript(_: ClosedRange&lt;Sel