
    <SPAN CLASS="keyword">template</SPAN>&lt;<SPAN CLASS="keyword">typename</SPAN> U1, <SPAN CLASS="keyword">typename</SPAN> U2&gt;
    <A CLASS="documented" HREF="#stream_forwarding_constructors">stream</A>([<SPAN CLASS="keyword">const</SPAN>] U1&amp; u1, <SPAN CLASS="keyword">const</SPAN> U2&amp; u2);

        <SPAN CLASS="omitted">...</SPAN>

    <SPAN CLASS="keyword">template</SPAN>&lt;<SPAN CLASS="keyword">typename</SPAN> U1, <SPAN CLASS="omitted">...</SPAN>, <SPAN CLASS="keyword">typename</SPAN> UN&g