upports C++11 user-defined literals, the suffix <code class="docutils literal"><span class="pre">_a</span></code> offers
an alternative, slightly terser syntax for named arguments:</p>
<div class="code c++ highlight-c++"><div class="highlight"><pre><span></span><span class="k">using</span> <span class="k">namespace</span> <span class="n">fmt</span><span class="o">::</span><span class="n">literals</span><span class="p">;</span>
<span class="n">fmt</span><span class="o">::</span><span class="n">print</span><s