 function, and add a warning or a message to it.</p>
<div class="sourceCode" id="cb20"><pre class="sourceCode r"><code class="sourceCode r"><a class="sourceLine" id="cb20-1" title="1">as_num_msg &lt;-<span class="st"> </span><span class="kw"><a href="reference/messagefunctions.html">with_message</a></span>(as.numeric, <span class="dt">msg =</span> <span class="st">"We're performing a numeric conversion"</span>)</a>
<a class="sourceLine" id="cb20-2" title="2">as_num_warn &lt;-<span class="st"> </span><span c