lass="r-in"><span>    <span class="fu"><a href="select_columns.html">select_columns</a></span><span class="op">(</span><span class="va">.</span>, <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"z"</span>, <span class="st">"one_two"</span><span class="op">)</span><span class="op">)</span></span></span>
<span class="r-in"><span>  <span class="fu"><a href="https://rdrr.io/r/base/print.html" class="external-link">print</a></sp