Make your game structured with GameplayKit

MetricKit reports allow you to collect data into a tracking service of your choice. Monitor Metrics like Launch times and hang rate.

Learn how to use unit testing to gain confidence in the correctness of code at the unit level, and use UI testing to ensure that the application fulfills user requirements, explained in detail and illustrated using an example application built using SwiftUI.

New in Swift 5.6: We can now use type placeholders to select what generic types that we want the compiler to infer. Let’s take a look at how those placeholders work, and what kinds of situations that they could be really useful in.

As developers have started adopting the new Swift Concurrency functionality introduced in Swift 5.5, a key area of interest has been around how this works with the Combine framework and how much of existing Combine based functionality can be replaced with…

Recently, I’ve been working on making a custom tab bar in our app accessible. That is, make it work just like a native, out-of-the-box UITabBarController.

We discussed building a proper logging system instead of using the print function in the previous post. Apple provides us a framework to utilize its logging system backed by on-disk persistence. This week we will talk about exporting logs from the user devices…

How to use Dependency Injection to Unit Test a ViewModel in Swift

In this article, we will break down the 'O' in SOLID.
I strongly recommend that you start with the first article in the series in order to cement the concepts in your mind as best as possible.
What are the SOLID principles in software development?
S...

In this article, you learn how to Center a View in the Superview with UIKit using Swift. With frames, mathematic, auto layout and more!

Two workarounds for making Metal sing like a bird in Swift Playgrounds

Enums as namespaces, dynamically callable, and more

Learn the basics of cool image filtering effects with Core Image and Swift.

How do you show content on an external screen?

URL routing is a large problem that has been solved in various ways over the years…but what does that have to do with swift-parsing!? A lot! swift-parsing comes with a URL routing library built on top of parser-printers, and it solves a lot of problems that…

In this post we’ll explore the different kinds of continuations that we can use to bridge existing code into the world of Swift Concurrency

I wrote a dictionary type where each key defines the type of value it stores. The public API is fully type-safe.

Downloading and caching images when building apps with SwiftUI is a common task to do. Learn how to implement performant caching.

A braindump on two features that are more tightly linked than you might wish.