<map id="ystdex::is_covariant&lt; expanded_function&lt; _tFrom(_tFromParams...), _tBase &gt;, expanded_function&lt; _tTo(_tToParams...), _tBase &gt; &gt;" name="ystdex::is_covariant&lt; expanded_function&lt; _tFrom(_tFromParams...), _tBase &gt;, expanded_function&lt; _tTo(_tToParams...), _tBase &gt; &gt;">
<area shape="rect" id="node1" title=" " alt="" coords="5,288,233,373"/>
<area shape="rect" id="node2" href="$d6/d8e/a01979.xhtml" title=" " alt="" coords="28,184,211,240"/>
<area shape="rect" id="node3" href="$dd/d4e/a01975.xhtml" title="判断指定类型之间是否协变。" alt="" coords="50,95,189,136"/>
<area shape="rect" id="node4" title=" " alt="" coords="55,5,183,47"/>
</map>
