...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 reverse iterator to the character following the last character of the reversed container.
string::const_reverse_iterator
crend() const noexcept;
Returns the pointed-to character that corresponds to the character preceding the first character of the non-reversed container. This character acts as a placeholder, attempting to access it results in undefined behavior.
Constant.
No-throw guarantee.