 b <span class="op">=</span> <span class="fl">2</span><span class="op">)</span>         <span class="co"># |0, a = 1, b = 2|</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> |0, a = 1, b = 2|</span>
<span class="r-in"><span><span class="fu"><a href="addleft.html">addleft</a></span><span class="op">(</span><span class="va">d</span>, a <span class="op">=</span> <span class="fl">1</span>, b <span class="op">=</span> <span class="fl">2</span><span class="op">)</span>     <span class="