This video is a companion for my blog post on the same topic: https://www.donnywals.com/deciding-where-to-store-data?utm_source=youtube Learn about some of the different data persistence options that are available on iOS, and what should be taken into consideration when you're deciding where to store data. In this video we cover the keychain, user defaults, relational databases, the filesystem and remote solutions. You'll learn about the pros and cons of every storage option, and you'll learn the key reasons that should cause you to pick one option over another. I also explain how it can make sense to mix and match storage solutions, and whether you should spend a ton of time writing abstractions for your persistence layer.

The default behavior for is often good enough, especially when you combine this with custom CodingKeys, it’s possible to encode and decode a wide variety of JSON data without any extra work.

Swift 6.2 is now officially in beta and so it's time for me to talk about what's new in concurrency for Swift 6.2. This video is a companion for my blog post on the same topic: https://www.donnywals.com/exploring-concurrency-changes-in-swift-6-2?utm_source=youtube In this video you will learn about nonislated(nonsending), and how it will make nonisolated async functions run on the actor that they were called from by default. You'll learn why this matters, and how you can use @Concurrent to offload work to a background thread. You'll also see how you can enable this feature from within Xcode's build settings directly. After that, we'll take a look at the new concurrency default in Xcode 26 that will make all your code run on the main actor by default. You'll learn how you can control default actor isolation by either setting it to MainActor or nonisolated, and you'll learn how this simplifies the way your code works. We'll also talk about how you can opt-out of this feature on a type- and function level. Strengthen your iOS development skills with my books: https://gumroad.com/l/practical-combine?utm_source=youtube https://gumroad.com/l/practical-core-data?utm_source=youtube https://gumroad.com/l/practical-swift-concurrency?utm_source=youtube https://gumroad.com/l/practical-bundle?utm_source=youtube Timestamps 00:00 - intro 00:56 - function types in Swift 6.1 04:21 - calling functions from the main actor 07:53 - calling functions from the global executor 09:34 - introducing nonisolated(nonsending) 10:10 - demonstrating actor inheritance 11:12 - introducing @concurrent 15:46 - introducing default actor isolation 21:11 - summary

If you’ve ever written or used a function that accepts a closure as one of its arguments, it’s likely that you’ve encountered the keyword. When a closure is marked as escaping in Swift…

Learn how you can start migrating over to Swift 6 in a responsible manner. Async/Await is super nice in Swift but at the same time it's essential that you plan a migration to Swift 6 carefully. With a completely new concurrency paradigm you'll run into tons of errors that are not familiar. It's rather easy to go overboard with the amount of concurrency that you're adding to your app, and you'll want to make sure that your team is up to speed when it comes to everything that's in Swift Concurrency. This video is a companion for my blog post on the same topic: https://www.donnywals.com/how-to-plan-a-migration-to-swift-6?utm_source=youtube Learn more about @preconcurrency and how it helps you migrate: https://www.youtube.com/watch?v=0Zf5zgtK-RU Improve your concurrency skills with my book, workshops, and course: https://practicalswiftconcurrency.com?utm_source=youtube https://donnyplus.com/p/practical-swift-concurrency-the-video-course?utm_source=youtube https://www.donnywals.com/workshops?utm_source=youtube Timestamps: 00:00 - Intro 01:03 - Taking inventory of your codebase 03:01 - Modularizing your codebase 04:25 - Strict concurrency checking 06:31 - Training your team 08:33 - Planning your approach 10:45 - Pitfalls and caveats 12:38 - Summary

Learn how to use date components to find the difference between two dates in Swift.

Learn how you can ensure that your code is working as expected with the #expect macro in Swift Testing. You'll learn how to evaluate boolean conditions and ensure that your code throws the errors you expect, or that it doesn't throw errors at all. This video is a companion for my blog post on the same topic: https://www.donnywals.com/asserting-state-with-expect-in-swift-testing?utm_source=youtube

Learn how you can use offer metadata to build a backend driven paywall with RevenueCat

Swift 6.2 comes with some interesting Concurrency improvements. One of the most notable changes is that there’s now a compiler flag that will, by default, isolate all your (implicitly nonisolated)…

A and are both used to represent decimal numbers, but they do so in slightly different ways. If you initialize a decimal number in Swift using as shown below, the Swift compiler will assume that you…