ss='no'>car1</span> <span class='kw'>==</span> <span class='no'>car2</span> <span class='kw'>&amp;&amp;</span> <span class='fu'>compare_llists</span>(<span class='no'>cdr1</span>, <span class='no'>cdr2</span>)
          )
}
<span class='fu'>compare_llists</span>(<span class='no'>NIL</span>, <span class='no'>NIL</span>)</div><div class='output co'>#&gt; [1] TRUE</div><div class='input'><span class='fu'>compare_llists</span>(<span class='fu'>CONS</span>(<span class='fl'>1</span>, <span class='no'>NIL</span>),