 class="n">sort</span><span class="p">(</span><span class="n">std</span><span class="o">::</span><span class="n">begin</span><span class="p">(</span><span class="n">people</span><span class="p">),</span> <span class="n">std</span><span class="o">::</span><span class="n">end</span><span class="p">(</span><span class="n">people</span><span class="p">),</span>
          <span class="p">[](</span><span class="k">const</span> <span class="n">Person</span><span class="o">&amp;</span> <span class="n">a</span><span