json/doc/mkdocs/docs/api/json_pointer/pop_back.md

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# <small>nlohmann::json_pointer::</small>pop_back
```cpp
void pop_back();
```
Remove last reference token.
## Exceptions
Throws [out_of_range.405](../../home/exceptions.md#jsonexceptionout_of_range405) if JSON pointer has no parent.
## Complexity
Constant.
## Examples
??? example
The example shows the usage of `pop_back`.
```cpp
--8<-- "examples/json_pointer__pop_back.cpp"
```
Output:
```json
--8<-- "examples/json_pointer__pop_back.output"
```
## Version history
Added in version 3.6.0.