sf::NonCopyable

[lorence30]

void acceptClient(sf::TcpListener& server)
{

}
int main()
{
    sf::TcpListener server;
   
    sf::Thread thread(&acceptClient,server); //'sf::NonCopyable::NonCopyable(const sf::NonCopyable&)' is private
}

is the only way to pass classes that inheirts sf::NonCopyable class is to pass it by pointer?

[eXpl0it3r]

No, you can pass a reference or a smart pointer as well.

[lefreut]

In this case, you need to pass std::ref(server) to sf::Thread to explicitly tell to the compiler that the argument is a reference. Otherwise, the compiler tries to perform a copy.

[lorence30]

struct A
{
    sf::TcpListener server;
    sf::TcpSocket socket;
};

A object = { std::ref(listener), std::ref(socket) };

error:
use of deleted function 'sf::TcpListener::TcpListener(const sf::TcpListener&)

how do i do it correctly?

[Nexus]

If you have access to std::ref(), it's very likely that you can use std::thread as well. You should prefer standard threads where possible.

You don't need to pass reference wrappers to your object, but to the thread.

std::thread(&function, std::ref(arg));

And please have a look at a C++ reference before asking questions about how to use the standard library.