Missing std::front and std::back

Question

Is there a reason std::front and std::back are not present in C++11? There is std::begin and std::end so to me, having the equivalent with regards to actual instances would make sense.

Answer 1

std::begin() and std::end() are supposed to work for all fundamental containers (including C-style arrays).

In fact, if the container supports member begin() and end() functions, std::begin() and std::end() forward the call to those member functions.

However, not all containers support front() and back() member functions.