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# Publishers.Decode

A publisher that decodes elements received from an upstream publisher, using a given decoder.

```
struct Decode<Upstream, Output, Coder> where Upstream : Publisher, Output : Decodable, Coder : TopLevelDecoder, Upstream.Output == Coder.Input
```

## Topics

### Creating a decode publisher

[`init(upstream:decoder:)`](/documentation/Combine/Publishers/Decode/init(upstream:decoder:))

Creates a publisher that decodes elements received from an upstream publisher, using a given decoder.

### Declaring supporting types

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

A publisher that publishes elements specified by a range in the sequence of published elements.

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

The kind of errors this publisher might publish.

### Inspecting publisher properties

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


---

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