Observable Architecture: Observing Optionals - Listen - Point-Free

Observable Architecture: Observing Optionals

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🔒 The Composable Architecture can now observe _struct_ state, but it requires a lot of boilerplate. Let's fix this by leveraging the `@Observable` macro from the Swift open source repository. And let's explore what it means to observe _optional_ state and eliminate the library's `IfLetStore` view for a simple `if let` statement.

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Back to Basics: Hashable References

🔒 We've studied `Equatable` and `Hashable`, their laws, and saw how value types as simple bags of data easily conform via "structural" equality. What about reference types? Reference types are an amalgamation of data _and_ behavior, and that data can be mutated in place at any time, so how can...

Published 10/21/24

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Published 10/21/24

Back to Basics: Hashable

🔒 While the documentation for `Equatable` discusses the notions of "equivalence relation" _and_ "substitutability", there are conformances in the Standard Library that run afoul, but for pragmatic reasons. Let’s explore them and then dive deeper into a related protocol: `Hashable`.

Published 10/14/24