class="op">&lt;-</span> <span class="va">imps</span><span class="op">$</span><span class="fu">clone</span><span class="op">(</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">imps2</span><span class="op">$</span><span class="fu">apply_rules</span><span class="op">(</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">"simp"</span>, <span class="st">"rsimp"</span><span class="op">)</spa