/home/tess/upp/uppsrc/Core/CoWork.h (159): error: 'result_of_t' is not a member of 'std'
/home/tess/upp/uppsrc/Core/CoWork.h (159): error: 'result_of_t' is not a member of 'std'
/home/tess/upp/uppsrc/Core/CoWork.h (159): error: 'decay_t' is not a member of 'std'
/home/tess/upp/uppsrc/Core/CoWork.h (159): error: template argument 1 is invalid
/home/tess/upp/uppsrc/Core/CoWork.h (159): error: expected ')' before '<' token
/home/tess/Documents/socketServer/server.cpp (41): error: use of deleted function 'Upp::WebSocket::WebSocket(const Upp::WebSocket&)'
/home/tess/upp/uppsrc/Core/Inet.h (173): error: 'Upp::TcpSocket::TcpSocket(const Upp::TcpSocket&)' is private
/home/tess/upp/uppsrc/Core/Inet.h (599): error: within this context
/home/tess/upp/uppsrc/Core/Inet.h (60): error: 'Upp::IpAddrInfo::IpAddrInfo(const Upp::IpAddrInfo&)' is private
/home/tess/upp/uppsrc/Core/Inet.h (599): error: within this context
/home/tess/upp/uppsrc/Core/Inet.h (599): error: use of deleted function 'constexpr Upp::BiVector<Upp::WebSocket::Input>::BiVector(const Upp::BiVect
or<Upp::WebSocket::Input>&)'
/home/tess/upp/uppsrc/Core/Inet.h (599): error: use of deleted function 'constexpr Upp::BiVector<Upp::String>::BiVector(const Upp::BiVector<Upp::Stri
ng>&)'

This helped only against CoWork.h errors. But errors in file Inet.h still exist.

Yes. I'm trying to copy a websocket. Is there any way to pass websocket to another function? I tried to use pick function, but there were errors too.
It is compiled without errors, if I comment this line(41).

One<WebSocket> MakeMySocket()
{
    One<WebSocket> h;
    WebSocket& s = h.Create();
    // do things with s
    return h;
}