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# Publishers.Throttle

A publisher that publishes either the most-recent or first element published by the upstream publisher in a specified time interval.

```
struct Throttle<Upstream, Context> where Upstream : Publisher, Context : Scheduler
```

## Topics

### Creating a throttle publisher

[`init(upstream:interval:scheduler:latest:)`](/documentation/Combine/Publishers/Throttle/init(upstream:interval:scheduler:latest:))

Creates a publisher that publishes either the most-recent or first element published by the upstream publisher in a specified time interval.

### Declaring supporting types

[`Publishers.Throttle.Output`](/documentation/Combine/Publishers/Throttle/Output)

The kind of values published by this publisher.

[`Publishers.Throttle.Failure`](/documentation/Combine/Publishers/Throttle/Failure)

The kind of errors this publisher might publish.

### Inspecting publisher properties

[`upstream`](/documentation/Combine/Publishers/Throttle/upstream)

The publisher from which this publisher receives elements.

[`interval`](/documentation/Combine/Publishers/Throttle/interval)

The interval in which to find and emit the most recent element.

[`scheduler`](/documentation/Combine/Publishers/Throttle/scheduler)

The scheduler on which to publish elements.

[`latest`](/documentation/Combine/Publishers/Throttle/latest)

A Boolean value indicating whether to publish the most recent element.


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