b'</span>, <span class="st">'d'</span>, <span class="st">'e'</span> <span class="op">=</span> <span class="st">'f'</span><span class="op">)</span><span class="op">)</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> c('a' = 'b', 'd', 'e' = 'f')</span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/base/cat.html" class="external-link">cat</a></span><span class="op">(</span><span class="fu">map_to_char</span><span class="op">(</span><span