---
title: AsyncCharacterSequence
framework: foundation
role: symbol
role_heading: Structure
path: foundation/asynccharactersequence
---

# AsyncCharacterSequence

An asynchronous sequence of characters.

## Declaration

```swift
struct AsyncCharacterSequence<Base> where Base : AsyncSequence, Base.Element == UInt8
```

## Topics

### Type Aliases

- [AsyncCharacterSequence.Element](foundation/asynccharactersequence/element.md)

## Relationships

### Conforms To

- [AsyncSequence](swift/asyncsequence.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Structures

- [AsyncLineSequence](foundation/asynclinesequence.md)
- [AsyncUnicodeScalarSequence](foundation/asyncunicodescalarsequence.md)
- [Expression](foundation/expression.md)
- [NSAttributedStringFormattingContextKey](foundation/nsattributedstringformattingcontextkey.md)
- [NSKeyValueChangeKey](foundation/nskeyvaluechangekey.md)
- [NSKeyValueObservedChange](foundation/nskeyvalueobservedchange.md)
- [NSKeyValueOperator](foundation/nskeyvalueoperator.md)
- [PresentationIntent](foundation/presentationintent.md)