hof</span><span class="o">::</span><span class="n">_</span><span class="p">)(</span><span class="mi">2</span><span class="p">,</span> <span class="mi">5</span><span class="p">);</span>
    <span class="n">assert</span><span class="p">(</span><span class="n">r</span> <span class="o">==</span> <span class="mi">3</span><span class="p">);</span>
<span class="p">}</span>
</pre></div>
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