l finish off with a bit of history, showing why we prefer
<code>across()</code> to our last approach (the <code>_if()</code>,
<code>_at()</code> and <code>_all()</code> functions) and how to
translate your old code to the new syntax.</p>
<div class="sourceCode" id="cb3"><pre class="sourceCode r"><code class="sourceCode r"><span id="cb3-1"><a href="#cb3-1" tabindex="-1"></a><span class="fu">library</span>(dplyr, <span class="at">warn.conflicts =</span> <span class="cn">FALSE</span>)</span></code></pre></div>