 [1] ""</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-in"><span><span class="fu">unitFromString</span><span class="op">(</span><span class="st">"deg c"</span><span class="op">)</span> <span class="co"># modern temperature (ITS-90 scale)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $unit</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> expression(degree * C)</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>