e> does preserve <code>dplyr</code> grouping.</p>
<div class="sourceCode" id="cb24"><pre class="sourceCode r"><code class="sourceCode r"><a class="sourceLine" id="cb24-1" data-line-number="1">grouping_df &lt;-<span class="st"> </span><span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/data.frame">data.frame</a></span>(</a>
<a class="sourceLine" id="cb24-2" data-line-number="2">  <span class="dt">group =</span> <span class="kw"><a href="https://www.rdocumentation.org/packages/base/t