-in"><span><span class="co"># simultaneous evaluation of criteria:</span></span></span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/base/data.frame.html" class="external-link">data.frame</a></span><span class="op">(</span>a <span class="op">=</span> <span class="fl">1</span><span class="op">:</span><span class="fl">10</span><span class="op">)</span> <span class="op"><a href="pipe.html">%&gt;%</a></span></span></span>
<span class="r-in"><span>  <span class="fu"><a href="track.html">t