@MediaQuery, a SwiftUI property wrapper that fetches a query for a view and refetches when the query or the library changes. $songs.isLoading…

System One models are pitched here as “smart `if` statements”, and honestly, that framing helps. Instead of asking a full LLM to generate text when all we need is a bounded judgement, Jev-style classifiers return typed answers, probabilities, and confidence fast enough to sit in real app flows. For our apps, this is the more interesting AI shape: not chat everywhere, but tiny decision points where fuzzy input meets structured output.

There’s a tiny launch argument here that deserves a spot in every SwiftUI performance debugging checklist: `-LogForEachSlowPath YES`. It catches `ForEach` content inside lazy containers when SwiftUI can’t know the number of views per element without evaluating offscreen rows, which is exactly the kind of invisible work that makes lists feel haunted. The fix is not always “wrap it in a `VStack`”; sometimes we should filter the collection before `ForEach`, and sometimes grouping is the right move because the element still exists. Small detail, big payoff. Our lists are only lazy if we stop making SwiftUI guess.

I agree to receive your newsletters and accept the data privacy statement.

Reorder items within and between custom SwiftUI containers, and build selection-aware multi-item drag and drop interactions with the new APIs in iOS 27.

Stop chasing test failures through helper functions. Here's how to write custom Swift Testing assertions that report errors exactly where they belong.

Review the full range of animation timing options available in SwiftUI, including easing curves, spring animations, the CustomAnimation protocol, and animation modifiers.

Custom test assertions can make your tests easier to read and write. How can you make them in Swift? Follow this example to learn the simple steps.

Reading device motion and orientation is a fast and slightly magical way to incorporate the real world into your apps, and can do a huge amount to add a little spark of delight to your UI. In this…

Hi again,

Subscription