Call to constructor of 'zmq::message_t' is ambiguous

[L-Super]

When I use the following code, I encounter an error

const char* str{"hello"};
zmq::message_t m{str};

Call to constructor of 'zmq::message_t' is ambiguous

It seems that const string& and string_view are in conflict.

[sigiesec]

You need to explicitly cast to std::string_view in the call to the constructor. Or you could just use std::string_view instead of const char* in the first place.

[L-Super]

I want to use it as a template function. How can I improve it?

template <typename String>
std::string send(String str)
{
//....
zmq::message_t m{str};
socket.send(m, zmq::send_flags::none);
//....
}

int main()
{
//...
send("hello");
}

[gummif]

Maybe just

std::string send(std::string_view str)
{
...
}