/a></span><span class="op">(</span>val <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/sum.html" class="external-link">sum</a></span><span class="op">(</span><span class="va">val</span><span class="op">)</span><span class="op">)</span></span>
<span><span class="co">#&gt; <span style="color: #949494;"># A tibble: 2 × 2</span></span></span>
<span><span class="co">#&gt;   key     val</span></span>
<span><span class="co">#&gt;   <span style="color: #949494; font-style: italic;">&lt;c