const std::string& back() const;
Return last reference token.
Last reference token.
Throws out_of_range.405 if JSON pointer has no parent.
Constant.
??? example
The example shows the usage of `back`. ```cpp --8<-- "examples/json_pointer__back.cpp" ``` Output: ```json --8<-- "examples/json_pointer__back.output" ```
Added in version 3.6.0.