/strong></span> This trait requires
        C++11 for full support. Without C++11 it will inherit from <a class="link" href="integral_constant.html" title="integral_constant">true_type</a>
        for scalar types (including integral, floating point, enumeration, pointer
        and pointer-to-member types), and from <a class="link" href="integral_constant.html" title="integral_constant">false_type</a>
        for anything else.
      </p>
<p>
        <span class="bold"><strong>Header:</strong></span> <code