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enum representation

How an enum's variant name is recorded in serialized data.

Serde writes enums externally tagged by default ({"Variant": ...}); tag = "..." makes them internally tagged, tag + content adjacently tagged, and untagged tries each variant in order.

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Examples

  • By default Alarm { celsius: 40.0 } is written {"Alarm":{"celsius":40.0}}; with #[serde(tag = "type")] it becomes {"type":"Alarm","celsius":40.0}.

See also

serde attribute serialization enum
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