# Unicode.ASCII.Parser ``` @frozen struct Parser ``` ## Topics ### Initializers [`init()`](/documentation/Swift/Unicode/ASCII/Parser/init()) Constructs an instance that can be used to begin parsing `CodeUnit`s at any Unicode scalar boundary. ### Instance Methods [`func parseScalar(from: inout I) -> Unicode.ParseResult`](/documentation/Swift/Unicode/ASCII/Parser/parseScalar(from:)) Parses a single Unicode scalar value from `input`. ### Type Aliases [`typealias Encoding`](/documentation/Swift/Unicode/ASCII/Parser/Encoding) The encoding with which this parser is associated ## Relationships ### Conforms To [`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable) [`Sendable`](/documentation/Swift/Sendable) [`SendableMetatype`](/documentation/Swift/SendableMetatype) [`Escapable`](/documentation/Swift/Escapable) [`Copyable`](/documentation/Swift/Copyable) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)