"k">constexpr</span> <span class="n">reverse_fold_adaptor</span><span class="o">&lt;</span><span class="n">F</span><span class="p">,</span> <span class="n">State</span><span class="o">&gt;</span> <span class="n">reverse_fold</span><span class="p">(</span><span class="n">F</span> <span class="n">f</span><span class="p">,</span> <span class="n">State</span> <span class="n">s</span><span class="p">);</span>

<span class="k">template</span><span class="o">&lt;</span><span class="k">class</span> <span class="nc"