span><span class="special">::</span><span class="identifier">string_t</span><span class="special">,</span> <span class="identifier">_case_insensitive_cmp</span><span class="special">&gt;</span> <span class="identifier">m_headers</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<p>
        This declaration is quite bare-bones. We note the typical problems of most
        field containers:
      </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">