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nlohmann
60 lines
889 B
Markdown
60 lines
889 B
Markdown
# std::swap<basic_json\>
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```cpp
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namespace std {
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void swap(nlohmann::basic_json& j1, nlohmann::basic_json& j2);
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}
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```
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Exchanges the values of two JSON objects.
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## Parameters
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`j1` (in, out)
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: value to be replaced by `j2`
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`j2` (in, out)
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: value to be replaced by `j1`
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## Exception safety
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No-throw guarantee: this function never throws exceptions.
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## Complexity
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Constant.
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## Possible implementation
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```cpp
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void swap(nlohmann::basic_json& j1, nlohmann::basic_json& j2)
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{
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j1.swap(j2);
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}
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```
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## Examples
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??? example
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The following code shows how two values are swapped with `std::swap`.
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```cpp
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--8<-- "examples/std_swap.cpp"
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```
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Output:
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```json
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--8<-- "examples/std_swap.output"
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```
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## See also
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- [swap](swap.md)
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## Version history
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- Added in version 1.0.0.
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- Extended for arbitrary basic_json types in version 3.10.5.
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