an class="st">"Nop !"</span>)</a>
<a class="sourceLine" id="cb4-4" title="4"><span class="co"># Error: Nop !</span></a></code></pre></div>
<p>You can make it verbose (i.e. returning the expression):</p>
<div class="sourceCode" id="cb5"><pre class="sourceCode r"><code class="sourceCode r"><a class="sourceLine" id="cb5-1" title="1"><span class="kw"><a href="reference/attempt.html">attempt</a></span>(<span class="kw">log</span>(<span class="st">"a"</span>), <span class="dt">msg =</span> <span class="st">"Nop 