How Performance down slow it is using UFCS friendly function?

[Marcone via Digitalmars-d-learn]

// Função receive()
char[] receive(Socket socket, int size = 8192) nothrow {
        try {
                char[] buffer;
                buffer.length = size;
                int rq = socket.receive(buffer);
                return buffer[0..rq];
        } catch(Throwable){return null;}
}

s = new Socket(AddressFamily.INET, SocketType.STREAM);
writeln(s.receive(8192)); // How slow is using as friendly 
function?