lass="r-out co"><span class="r-pr">#&gt;</span> $s</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "a"</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $v</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 1 2 3</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-in"><span><span class="fu"><a href="rev.html">rev</a></span><span class="op">(</span><span class="va">d</s