r-functions.html"><i class="fa fa-check"></i><b>6.11</b> Higher-order functions</a><ul>
<li class="chapter" data-level="" data-path="higher-order-functions.html"><a href="higher-order-functions.html#functions-passed-by-reference"><i class="fa fa-check"></i>Functions passed by reference</a></li>
<li class="chapter" data-level="" data-path="higher-order-functions.html"><a href="higher-order-functions.html#data-restricted-arguments"><i class="fa fa-check"></i>Data-restricted arguments</a></li>
</ul></li>
<li c