# basic_json::rbegin ```cpp reverse_iterator rbegin() noexcept; const_reverse_iterator rbegin() const noexcept; ``` Returns an iterator to the reverse-beginning; that is, the last element. ![Illustration from cppreference.com](../../images/range-rbegin-rend.svg) ## Return value reverse iterator to the first element ## Exception safety No-throw guarantee: this member function never throws exceptions. ## Complexity Constant. ## Example ??? example The following code shows an example for `rbegin()`. ```cpp --8<-- "examples/rbegin.cpp" ``` Output: ```json --8<-- "examples/rbegin.output" ``` ## Version history - Added in version 1.0.0.