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# SignpostRecord

A record of a signpost event associated with a diagnostic report.

```
struct SignpostRecord
```

## Discussion

This describes a single signpost event that was active around the time of a diagnostic event. Each record carries a subsystem, category, and name that identify the signpost, along with an [`interval`](/documentation/MetricKit/SignpostRecord/interval) covering the signpost’s duration. For instantaneous signposts, the start and end of the interval are equal, giving a duration of zero.

Access signpost records through [`signpostData`](/documentation/MetricKit/DiagnosticReport/Environment-swift.struct/signpostData) on the diagnostic report’s environment.

## Topics

### Signpost details

[`let subsystem: String`](/documentation/MetricKit/SignpostRecord/subsystem)

Signpost subsystem

[`let category: String`](/documentation/MetricKit/SignpostRecord/category)

Signpost category

[`let name: String`](/documentation/MetricKit/SignpostRecord/name)

Signpost name

### Timing

[`let interval: DateInterval`](/documentation/MetricKit/SignpostRecord/interval)

Time interval for the signpost
For instant signposts, start and end are the same (duration == 0)

## Relationships

### Conforms To

[`Sendable`](/documentation/Swift/Sendable)

[`Decodable`](/documentation/Swift/Decodable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Encodable`](/documentation/Swift/Encodable)

---

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