u"><a href="https://rdrr.io/r/base/rep.html" class="external-link">rep</a></span><span class="op">(</span><span class="cn">NA</span>, <span class="fl">4</span><span class="op">)</span><span class="op">)</span><span class="op">)</span> 
<span class="fu"><a href="reference/drop_all_na.html">drop_all_na</a></span><span class="op">(</span><span class="va">test2</span>, grouping_cols<span class="op">=</span><span class="st">"ID"</span><span class="op">)</span>
<span class="co">#&gt; # A tibble: 3 x 2</span>
<spa