C++ When do I need to change both files (header and .cpp) ?

[drakylucas]

I'm with this doubt...
Like, in the TFS, there are some small functions that are implemented only in the header files... So, what is the general rule about it, when do I need to just write the header and implement in the cpp file, and when I need just to implement in the header file?


example:
player.h

        static uint64_t getExpForLevel(int32_t lv) {
            lv--;
            return ((50ULL * lv * lv * lv) - (150ULL * lv * lv) + (400ULL * lv)) / 3ULL;
        }

player.h

        void setName(std::string name) {
            this->name = std::move(name);
        }

these functions (and many others) are implemented on header files only.


Thanks all!

 

[WibbenZ]

Depends, if the function only should be used in that C++ / header file you don't have to add it in .cpp.
Defining C++ Functions Inside Header Files