an class="r-in"><span><span class="kw">if</span> <span class="op">(</span><span class="cn">FALSE</span><span class="op">)</span> <span class="op">{</span> <span class="co"># \dontrun{</span></span></span>
<span class="r-in"><span><span class="va">df</span> <span class="op">&lt;-</span> <span class="va">iris</span><span class="op">[</span>, <span class="fl">1</span>, drop <span class="op">=</span> <span class="cn">FALSE</span><span class="op">]</span></span></span>
<span class="r-in"><span><span class="fu"><