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2026-10-03 05:43:12 +00:00
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api/basic_json/json_base_class_t.md
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@@ -14,12 +14,12 @@ Examples of such functionality might be metadata, additional member functions (e
## Notes
#### Default type
### Default type
The default value for `CustomBaseClass` is `void`. In this case, an
[empty base class](https://en.cppreference.com/w/cpp/language/ebo) is used and no additional functionality is injected.
#### Limitations
### Limitations
The type `CustomBaseClass` has to be a default-constructible, non-`final` class.
`basic_json` only supports copy/move construction/assignment if `CustomBaseClass` does so as well.
@@ -43,6 +43,10 @@ A `CustomBaseClass` with non-static data members forfeits `basic_json`'s
--8<-- "examples/json_base_class_t.output"
```
## See also
- [Template Parameter Requirements](../../features/types/template_parameters.md#custombaseclass) - the requirements for `CustomBaseClass`
## Version history
- Added in version 3.12.0.