ass="co"># &lt;!-- Comparing with results calculated by `caracas`: --&gt;</span>
<span class="co"># </span>
<span class="co"># &lt;!-- ```{r} --&gt;</span>
<span class="co"># &lt;!-- V1_eval &lt;- eval(as_expr(V1), list(a = alpha)) --&gt;</span>
<span class="co"># &lt;!-- V2_eval &lt;- eval(as_expr(V2, first_doit = FALSE), list(a = alpha, b = beta)) --&gt;</span>
<span class="co"># &lt;!-- all.equal(V1, V1_eval) --&gt;</span>
<span class="co"># &lt;!-- all.equal(V2, V2_eval) --&gt;</span>
<span class="co">#