Shortcut Helper Functions<a class="anchor" aria-label="anchor" href="#shortcut-helper-functions"></a>
</h2>
<p><code>vtable</code> includes four shortcut functions. These are
generally intended for use with the <code>summ</code> option in
<code>vtable</code> and <code>sumtable</code> because nested functions
don’t look very nice in a <code>vtable</code>, or in a
<code>sumtable</code> unless you explicitly set the
<code>summ.names</code>.</p>
<div class="section level3">
<h3 id="nuniq">
<code>nuniq</code><