How to Pass Any Enum That Conforms to Protocols to SwiftUI View скачать в хорошем качестве

How to Pass Any Enum That Conforms to Protocols to SwiftUI View

Discover how to create a generic SwiftUI view that handles enums conforming to protocols like `CaseIterable`, `Identifiable`, and `CustomStringConvertible`, making your code efficient and reusable. --- This video is based on the question https://stackoverflow.com/q/76148571/ asked by the user 'Christopher Horsfield' ( https://stackoverflow.com/u/21789012/ ) and on the answer https://stackoverflow.com/a/76148729/ provided by the user 'timbre timbre' ( https://stackoverflow.com/u/5318223/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How to pass any enum that conforms to protocols to SwiftUI view Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- How to Pass Any Enum That Conforms to Protocols to SwiftUI View If you are a SwiftUI developer, you might find yourself needing to create a picker view for multiple enums that share the same protocol conformance. This can lead to repetitive code, which is not ideal in programming. Fortunately, there is a clean and efficient way to handle multiple enums in a single reusable view structure. In this post, we will explore how to create a generic enum picker view in SwiftUI that can manage any enum conforming to the CaseIterable, Identifiable, and CustomStringConvertible protocols. The Problem: Repetitive Code in Enum Picker Creation Imagine you have three or more enums in your SwiftUI application, each conforming to the protocols mentioned above. To create a user interface element like a Picker, you want to avoid writing separate views for each enum. That wouldn't just waste your time, it would also make your code less manageable. So how can you create a single view that can handle multiple enums? Here's the problematic code snippet you might have tried: [[See Video to Reveal this Text or Code Snippet]] As you may have guessed, this code won't compile due to the incorrect type declarations and usage of generics. Let’s look at a better approach. The Solution: A Generic Enum Picker View The key to creating an efficient enum picker view lies in generics. You can make your EnumPickerView generic, allowing it to work with any enum that conforms to the required protocols. Here’s how you can implement it: [[See Video to Reveal this Text or Code Snippet]] Explanation of the Code Generics: We define T as a generic type that conforms to CaseIterable, Identifiable, Hashable, and CustomStringConvertible. This allows the view to accept any enum that meets these criteria. Binding: The @ Binding var pickedValue: T creates a two-way link with the selected option from the parent view, maintaining the current state. Picker Construction: The Picker element uses the initialized title and the bound value to display and select options from the enum. Sample Enum Implementation Here's how you can define an enum that works with EnumPickerView: [[See Video to Reveal this Text or Code Snippet]] Using the Enum Picker in a View Now that we have our generic enum picker set up, let's see how we can use it in a SwiftUI view: [[See Video to Reveal this Text or Code Snippet]] Conclusion By employing a generic approach, you can create a highly reusable and efficient EnumPickerView for any enums conforming to the required protocols in SwiftUI. This not only helps reduce code duplication but also enhances the maintainability of your code. So the next time you find yourself managing multiple enums in your SwiftUI application, remember this strategy to streamline your development process. Now go ahead and try implementing the EnumPickerView yourself for your enums – your code will thank you!