e D::result_type&gt;::type,</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;                <span class="keyword">typename</span> D::argument_type</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;            &gt;</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;        &gt;();</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;        gil_function_requires&lt;boost::DefaultC