ailnum</span><span class="op">)</span>,flights <span class="op">=</span> <span class="va">.N</span>,by <span class="op">=</span> <span class="va">dest</span><span class="op">)</span> <span class="op"><a href="https://magrittr.tidyverse.org/reference/pipe.html" class="external-link">%&gt;%</a></span> </span>
<span>  <span class="fu"><a href="../reference/arrange_dt.html">arrange_dt</a></span><span class="op">(</span><span class="va">dest</span><span class="op">)</span></span></code></pre></div>
<p>If you nee