std::set::rend, std::set::crend

From cppreference.com
reverse_iterator rend();
const_reverse_iterator rend() const;
const_reverse_iterator crend() const;
(since C++11)

Returns a reverse iterator to the element following the last element of the reversed container. It corresponds to the element preceding the first element of the non-reversed container. This element acts as a placeholder, attempting to access it results in undefined behavior.

Contents

[edit] Parameters

(none)

[edit] Return value

reverse iterator to the element following the last element

[edit] Exceptions

1-3)
noexcept specification:  
noexcept
  (since C++11)

[edit] Complexity

Constant

[edit] See also

returns a reverse iterator to the beginning
(public member function)