Support</a></h2>
<p>Some older compilers don't support SFINAE.  If your compiler meets
that criterion, then Boost headers will <tt class="docutils literal">#define</tt> the preprocessor
symbol <tt class="docutils literal">BOOST_NO_SFINAE</tt>, and parameter-enabled functions won't be
removed from the overload set based on their signatures.</p>
</div>
<div class="section" id="no-support-for-result-of">
<h2>5.2&nbsp;&nbsp;&nbsp;No Support for <a class="reference external" href="../../../utility/utility.htm#re