Point-Free Videos

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Interfacing with SQLite's C library from Swift is possible, but clunky. Luckily there are

friendlier, "Swiftier" interfaces the community has built, so let's take a look at the most

popular: GRDB. We'll explore how it can help us avoid pitfalls and boilerplate required to use

the C library, and how its typed SQL helpers can even help us avoid runtime issues at compile

time.

Subscriber-Only: Today's episode is available only to subscribers. If you are a Point-Free subscriber you can access your private podcast feed by visiting https://www.pointfree.co/account.

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SQLite is one of the most well-crafted, battle-tested, widely-deployed pieces of software in history, and it's a great fit for apps with more complex persistence needs than user defaults or a JSON file. Let's get familiar with the library, starting with a crash course in interacting with C code from Swift.

Subscriber-Only: Today's episode is available only to subscribers. If you are a Point-Free subscriber you can access your private podcast feed by visiting https://www.pointfree.co/account.

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We zoom out a bit to get a greater appreciation for how `Equatable` and `Hashable` are used throughout the greater language and ecosystem, including actors, standard library types, SwiftUI, and more.

Subscriber-Only: Today's episode is available only to subscribers. If you are a Point-Free subscriber you can access your private podcast feed by visiting https://www.pointfree.co/account.

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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 they reasonably conform to these protocols?

Subscriber-Only: Today's episode is available only to subscribers. If you are a Point-Free subscriber you can access your private podcast feed by visiting https://www.pointfree.co/account.

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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`.

Subscriber-Only: Today's episode is available only to subscribers. If you are a Point-Free subscriber you can access your private podcast feed by visiting https://www.pointfree.co/account.

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In this series we go back to basics with a deep dive into the subject of `Equatable` types. Equatability is a deceptively simple topic. It is a surprisingly tricky protocol that has some very specific semantics that must be upheld baked into it, and there are many misconceptions on how one can or should conform types to this protocol.

Subscriber-Only: Today's episode is available only to subscribers. If you are a Point-Free subscriber you can access your private podcast feed by visiting https://www.pointfree.co/account.

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We round out our series with one more feature: the ability for our users to manage a list of their favorite facts. It will allow us to explore a complex side effect, persistence, and show how the same Swift code can save and load data across iOS app launches _and_ web page refreshes.

Subscriber-Only: Today's episode is available only to subscribers. If you are a Point-Free subscriber you can access your private podcast feed by visiting https://www.pointfree.co/account.

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We've already covered a lot of ground and could have ended the series last week, but let's do a few more things to show just how powerful cross-platform domain modeling can be by adding a _new_ feature to our cross-platform application and see just how easy it is to integrate with SwiftUI, UIKit, _and_ WebAssembly.

Subscriber-Only: Today's episode is available only to subscribers. If you are a Point-Free subscriber you can access your private podcast feed by visiting https://www.pointfree.co/account.

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We will introduce UI controls and focus logic to our SwiftWasm application by leveraging a

binding type inspired by SwiftUI, and we will see how similar even our view logic can look

across many platforms.

Subscriber-Only: Today's episode is available only to subscribers. If you are a Point-Free subscriber you can access your private podcast feed by visiting https://www.pointfree.co/account.

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We will introduce navigation APIs to our Wasm application, starting simply with an alert before ramping things up with a `dialog` tag that can be fully configurable from a value type that represents its state and actions.