# AppEnum(schema:) A Swift macro you use to make sure your app enum conforms to a schema. ``` @attached(extension, conformances: AppEnum, AssistantSchemaEnum, names: named(__appSchemaEnum)) macro AppEnum(schema: T) where T : AppSchemaEnum ``` --- 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)