lass="r-in"><span><span class="va">d2</span><span class="op">$</span><span class="va">sd</span> <span class="op">&lt;-</span> <span class="st">"five"</span></span></span>
<span class="r-in"><span><span class="va">dat</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/cbind.html" class="external-link">rbind</a></span><span class="op">(</span><span class="va">d1</span>, <span class="va">d2</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va