al"><span class="pre">const</span></code>, so it would be
impossible to provide a non-const overload for functions that is <code class="docutils literal"><span class="pre">constexpr</span></code>.
Instead, <code class="docutils literal"><span class="pre">constexpr</span></code> would have to be made explicit. Considering the pitfalls
of mutable function objects, it would be better to make mutability explicit
rather than <code class="docutils literal"><span class="pre">constexpr</span></code>.</p>
</div>
<di