">&lt;-</span> <span class="cf">function</span>(x, y) {</span>
<span id="cb402-11"><a href="loops.html#cb402-11" tabindex="-1"></a>  temp <span class="ot">&lt;-</span> x <span class="sc">*</span> y</span>
<span id="cb402-12"><a href="loops.html#cb402-12" tabindex="-1"></a>  <span class="cf">if</span> (<span class="fu">any</span>(<span class="fu">is.na</span>(temp))) {</span>
<span id="cb402-13"><a href="loops.html#cb402-13" tabindex="-1"></a>    <span class="fu">warning</span>(<span class="st">&quot;The fun