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# Publishers.Delay

A publisher that delays delivery of elements and completion to the downstream receiver.

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

## Topics

### Creating a delay publisher

[`init(upstream:interval:tolerance:scheduler:options:)`](/documentation/Combine/Publishers/Delay/init(upstream:interval:tolerance:scheduler:options:))

Creates a publisher that delays delivery of elements and completion to the downstream receiver.

### Declaring supporting types

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

The kind of values published by this publisher.

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

The kind of errors this publisher might publish.

### Inspecting publisher properties

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

The publisher from which this publisher receives its elements.

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

The amount of time to delay.

[`tolerance`](/documentation/Combine/Publishers/Delay/tolerance)

The allowed tolerance in firing delayed events.

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

The scheduler to deliver the delayed events.

[`options`](/documentation/Combine/Publishers/Delay/options)

Options relevant to the scheduler’s behavior.


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