e-link" data-toggle="collapse" href="#comment-func--formindex-before_">func formIndex(<wbr>before:)</a>
        
<div class="comment collapse" id="comment-func--formindex-before_"><div class="p">
    

    <h4>Declaration</h4>    
    <code class="language-swift">func formIndex(before i: inout Self.Index)</code>
    
    
</div></div>
</div>
<div class="declaration" id="func--index_offsetby_">
<a class="toggle-link" data-toggle="collapse" href="#comment-func--index_offsetby_">func index(<wbr>_:<wbr>offsetBy