Btw, why doesn't the STL contain also safe versions with access control? Like a second variant where the methods operator[] and at() are switched (cf https://en

Btw, why doesn't the STL contain also safe versions with access control? Like a second variant where the methods operator[] and at() are switched (cf https://en.cppreference.com/w/cpp/container/vector/at https://en.cppreference.com/w/cpp/container/vector/at). That would be such an easy addition.