">x</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="n">x</span> <span class="o">*</span> <span class="n">x</span><span class="p">;</span> <span class="p">});</span>
</pre></div>
</div>
<p>Now, if some users feel a little worried about overloading the <em>bitwise or</em>
operator, pipable functions can also be used with <a class="reference internal" href="../../include/boost/hof/flow.html"><span class="doc">flow</span></a> like this:</p>
<div class="highligh