I’m trying to overload operator += .. of course this’s not possible by code but If I have not been fooled by docs once overloaded the + operator the += operator will be implicity overloaded.

I’m trying to pass a specific overload of std::isfinite() to a function, but GCC refuses:

I’m trying to pass a specific overload of std::isfinite() to a function, but GCC refuses:

I have an exam on programming techniques in c++ and and one common question is wether a certain operator should be overloaded inside the class as a member function , outside a class as a friend or we can do both. I know that + , – , * / can be either. I know that >> << can only be outside of the class and i know that [] and -> have to be inside the class . The ones i dont know and i cant seem to find somewhere are = , != and =. Where should we overload these operators and why .

I have these overloads:

A string literal when passed to a function will be deduced to be first a const char (&)[] array first, and then if not function is suitable it will decay to a const char*. So I thought that the following would work, however the const char* function is still being called: