...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Return a const iterator to the element following the last element.
array::const_iterator
cend() const noexcept;
The element acts as a placeholder; attempting to access it results in undefined behavior.
Constant.
No-throw guarantee.