};</span>

<span class="kt">int</span> <span class="nf">main</span><span class="p">()</span> <span class="p">{</span>
    <span class="n">assert</span><span class="p">(</span><span class="n">boost</span><span class="o">::</span><span class="n">hof</span><span class="o">::</span><span class="n">reverse_fold</span><span class="p">(</span><span class="n">max_f</span><span class="p">())(</span><span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">4<