Is there a shortcut overlap operators?

Question

I have a void operator+ and operator+=
How do I overlap them. I know that if I copy the same code in both functions it will work. I am more curious is there a shorter way without needing to copy the entire code?

Answer 1

You can implement one and call that from another, I mean you don't really need to duplicate the code, remember that

c += 20;

is the same as

c = c + 20;

so your + operator should instead of duplicate the code, wisely call the overloaded += operator