Using "+=" when "+" is overloaded in a class function?

Question

const function operator+(const function *) const;

What will happen if you do: x += y; ...when x and y are of the same class. Does it still work in this context or does it have to be x + y;?

Answer 1

They are distinct and unrelated (as far as compiler is concerned)

Though, if you overload 1 of them, it is probably worth also overloading the other for consistency

btw. Here is very good explanation of operator overloadings: https://stackoverflow.com/a/4421719/3595112