---
title: Unicode.ASCII
framework: swift
role: symbol
role_heading: Enumeration
path: swift/unicode/ascii
---

# Unicode.ASCII

## Declaration

```swift
@frozen enum ASCII
```

## Topics

### Structures

- [Unicode.ASCII.Parser](swift/unicode/ascii/parser.md)

### Type Aliases

- [Unicode.ASCII.CodeUnit](swift/unicode/ascii/codeunit.md)
- [Unicode.ASCII.EncodedScalar](swift/unicode/ascii/encodedscalar.md)
- [Unicode.ASCII.ForwardParser](swift/unicode/ascii/forwardparser.md)
- [Unicode.ASCII.ReverseParser](swift/unicode/ascii/reverseparser.md)

### Type Properties

- [encodedReplacementCharacter](swift/unicode/ascii/encodedreplacementcharacter.md)

### Type Methods

- [decode(_:)](swift/unicode/ascii/decode(_:).md)
- [encode(_:)](swift/unicode/ascii/encode(_:).md)
- [isASCII(_:)](swift/unicode/ascii/isascii(_:).md)
- [transcode(_:from:)](swift/unicode/ascii/transcode(_:from:).md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)
- [Copyable](swift/copyable.md)
- [Escapable](swift/escapable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Unicode Codecs

- [UnicodeCodec](swift/unicodecodec.md)
- [Unicode.UTF8](swift/unicode/utf8.md)
- [Unicode.UTF16](swift/unicode/utf16.md)
- [Unicode.UTF32](swift/unicode/utf32.md)
- [UnicodeDecodingResult](swift/unicodedecodingresult.md)
- [Unicode.ParseResult](swift/unicode/parseresult.md)