Announcing Lottie 4.0, SwiftUI Lifecycles and more!

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Dec 22 2022

Announcing Lottie 4.0, SwiftUI Lifecycles and more!

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Announcing Lottie 4.0 for iOS

A new rendering engine with significant performance improvements powered by Core Animation

Code

Understanding SwiftUI view lifecycles

I wrote an app for observing how various SwiftUI constructs and container views affect view lifecycles, including the lifetime of state.

SwiftUI by Example: Now updated for iOS 16

This week I published the biggest ever update to SwiftUI by Example, adding lots of new sample code plus 100 new Xcode projects to download.

What are Sendable and @Sendable closures in Swift?

One of the goals of the Swift team with Swift’s concurrency features is to provide a model that allows developer to write safe code by default. This means that there’s a lot of time and energy…

Eliminating Stringly Typed Code

Swift has a lot to offer, but it isn't always obvious how to get the most out of the language. I often see developers compromise the APIs they build by using stringly typed code while Swift provides features that make stringly typed code unnecessary. In this series, I show you how a handful of simple patterns and techniques can help you build APIs that are type-safe, elegant, and intuitive to use.

How to check if an Element is in an Array in Swift

Learn two ways to check if an array contains a given element.

News & Updates

Upcoming changes to the App Store receipt signing certificate

Starting January 18, 2023, the App Store receipt signing certificate will use a new WWDR intermediate certificate. The existing intermediate certificate expires on February 7, 2023.

Misc