json/api/json_pointer/back.md

nlohmann::json_pointer::back

const string_t& back() const;

Return the last reference token.

Return value

Last reference token.

Exception safety

Strong exception safety: if an exception occurs, the original value stays intact.

Exceptions

Throws out_of_range.405 if the JSON pointer has no parent.

Complexity

Constant.

Examples

??? example

The example shows the usage of `back`.
 
```cpp
--8<-- "examples/json_pointer__back.cpp"
```

Output:

```json
--8<-- "examples/json_pointer__back.output"
```

See also

• front return first reference token
• pop_back remove the last reference token
• push_back append an unescaped token at the end of the pointer
• parent_pointer returns the parent of this JSON pointer

Version history

• Added in version 3.6.0.
• Changed return type to string_t in version 3.11.0.