Variadic template resolution in VS2013 - Error C3520

Question

What\'s wrong with this code?

enum LogLevel {
    LogLevel_Error = 1,
    LogLevel_Warning = 2,
    LogLevel_Info = 3,
    LogLevel_Debug = 4
};

LogLevel GetLog         


        

Answer 1

I see the following issues:

1. rest needs to be expanded:

   Write(level, ss, rest...);
   

2. Write is supposed to take a log level as its first argument:

   Write(GetLogLevel(), std::stringstream(), "Hello", (const char*)" World!", 1);
   

3. You can't pass a temporary std::stringstream to an lvalue reference:

   std::stringstream ss;
   Write(GetLogLevel(), ss, "Hello", (const char*)" World!", 1);