Sendable protocol real world example
Asked on 08/04/2024
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A real-world example of the Sendable protocol can be found in the session Migrate your app to Swift 6. In this session, the presenter discusses a scenario involving a public type called Drink in a coffee tracking app.
Here's a summary of the example:
- Context: The
Drinktype is shared between the main app and a coffee tracker extension. Since it is a public type, Swift does not infer its sendability automatically. - Problem: Without marking
DrinkasSendable, there are multiple warnings because the type is used across different concurrency domains (e.g., between actors). - Solution: By explicitly marking the
Drinktype asSendable, the warnings are resolved, ensuring that the type can be safely shared between different actors without risking data races.
This example illustrates how marking a type as Sendable can help manage concurrency and ensure data-race safety in a Swift application. For more details, you can watch the session Migrate your app to Swift 6.
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