
<span id="cb23-15"><a href="#cb23-15" tabindex="-1"></a><span class="co">#&gt; 1 a         1    -1</span></span>
<span id="cb23-16"><a href="#cb23-16" tabindex="-1"></a><span class="co">#&gt; 2 b         1     1</span></span></code></pre></div></li>
<li><p>When used in a <code>mutate()</code>, all transformations
performed by an <code>across()</code> are applied at once. This is
different to the behaviour of <code>mutate_if()</code>,
<code>mutate_at()</code>, and <code>mutate_all()</code>, which apply the
