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json/doc/mkdocs/docs/api/basic_json/std_swap.md
Niels Lohmann 29cd970b94
Consolidate documentation (#3071) 
* 🔥 consolidate documentation
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* 📝 add note for https://github.com/nlohmann/json/issues/874#issuecomment-1001699139
* 📝 overwork example handling
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2021-12-29 13:41:01 +01:00

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std::swap<basic_json>

namespace std {
    void swap(nlohmann::basic_json& j1, nlohmann::basic_json& j2);
}

Exchanges the values of two JSON objects.

Parameters

j1 (in, out)
value to be replaced by j2
j2 (in, out)
value to be replaced by j1

Possible implementation

void swap(nlohmann::basic_json& j1, nlohmann::basic_json& j2)
{
    j1.swap(j2);
}

Examples

??? example

The following code shows how two values are swapped with `std::swap`.
 
```cpp
--8<-- "examples/std_swap.cpp"
```

Output:

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

See also

Version history

  • Added in version 1.0.0.
  • Extended for arbitrary basic_json types in version 3.10.5.