c++ empty std::vector begin not equals to end

Question

Hi I have situation on windows 10, that declared empty class member variable vector, but this vector\'s begin()(first iterator) and end()(last iterator)

Answer 1

The iterators are returned by value, so the address will indeed not be the same. Even if you do:

const vector::iterator &it1 = vect.begin();
const vector::iterator &it2 = vect.begin();

the addresses of it1 and it2 can be different (and will be in many implementations) - even if references are used.

(note that using begin() in both is not a mistake - the same method begin() will return two different objects with different values)