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# AsyncFlatMapSequence

An asynchronous sequence that concatenates the results of calling a given
transformation with each element of this sequence.

```
struct AsyncFlatMapSequence<Base, SegmentOfResult> where Base : AsyncSequence, SegmentOfResult : AsyncSequence
```

## Topics

### Structures

[`struct Iterator`](/documentation/Swift/AsyncFlatMapSequence/Iterator)

The iterator that produces elements of the flat map sequence.

### Type Aliases

[`typealias Failure`](/documentation/Swift/AsyncFlatMapSequence/Failure)

The type of error produced by this asynchronous sequence.

### Default Implementations

[AsyncSequence Implementations](/documentation/Swift/AsyncFlatMapSequence/AsyncSequence-Implementations)

## Relationships

### Conforms To

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

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

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

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

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

---

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