can we define a property wrapper inside a protocol ?
Asked on 08/28/2024
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In Swift, you cannot define a property wrapper directly inside a protocol. Protocols in Swift are abstract sets of requirements for a type, and they do not allow for the direct inclusion of property wrappers. Property wrappers are used to encapsulate logic for managing stored values and are typically applied to properties within concrete types or extensions, not within protocols themselves.
For more information on property wrappers and their usage, you can refer to the session A Swift Tour: Explore Swift’s features and design at the WWDC 2024.
A Swift Tour: Explore Swift’s features and design
Learn the essential features and design philosophy of the Swift programming language. We’ll explore how to model data, handle errors, use protocols, write concurrent code, and more while building up a Swift package that has a library, an HTTP server, and a command line client. Whether you’re just beginning your Swift journey or have been with us from the start, this talk will help you get the most out of the language.
Explore Swift performance
Discover how Swift balances abstraction and performance. Learn what elements of performance to consider and how the Swift optimizer affects them. Explore the different features of Swift and how they’re implemented to further understand the tradeoffs available that can impact performance.
Demystify SwiftUI containers
Learn about the capabilities of SwiftUI container views and build a mental model for how subviews are managed by their containers. Leverage new APIs to build your own custom containers, create modifiers to customize container content, and give your containers that extra polish that helps your apps stand out.