 <code>if_all()</code> can be used
inside <code>filter()</code> to keep rows for which the predicate is
true for at least one, or all selected columns:</p>
<div class="sourceCode" id="cb23"><pre class="sourceCode r"><code class="sourceCode r"><span id="cb23-1"><a href="#cb23-1" tabindex="-1"></a>df <span class="ot">&lt;-</span> <span class="fu">tibble</span>(<span class="at">x =</span> <span class="fu">c</span>(<span class="st">&quot;a&quot;</span>, <span class="st">&quot;b&quot;</span>), <span class="at">y