Explorations in building a Mac app in Swift.

In part 1 of this series, I created a Mac app using SwiftUI. The app uses a Master-Detail design to list entries in an outline on the left and show details about the selected entry in the detail view on the right.
Now it is time to explore some more of the…

In part 1 of this series, I created a Mac app using SwiftUI. The app uses a Master-Detail design to list entries in an outline on the left and show details about the selected entry in the detail view on the right. In part 2 I explored using menus, adding…

This week, let’s take a look at how we can improve the internal consistency within each of our core data models, and how doing so can let us establish a much stronger foundation for our codebase as a whole.

Learn how to use opaque return types and the some keyword in Swift 5. Understand the difference between opaque return types, generics and protocols.

Learn how to unit test UIViewController and UIView in Swift 5 with Xcode and XCTest. We'll cover: benefits of unit testing view controllers; what we should be unit testing; how to design a view controller for testability; and sharpen our knowledge by writing…

Last week we started a series of posts about developing interactive components using SwiftUI, where we talked about building the bottom sheet. We need to understand the power of @ViewBuilder before moving to the next post about building another interactive…

This article is for implementation on the iOS side , if you are looking for the backend implementation part, check out this book!In WWDC 2019, Apple has announced a new privacy-focused mechanism for user to sign in on third party app, named "Sign in with…

Learn how and when you should split your app up into multiple specialized, reusable modules.

Fixing crashes and bugs takes time. Speed up this process by being better prepared with tips on diagnostics reports, feedback and useful insights.

Displaying a list from Core Data is very simple, but what if you need to get your data from an API? For data out of CoreData or in an array, you can just throw it into a List or ForEach loop. For data you have to retrieve from somewhere else, this becomes…

As an iOS developer, how many times you stare at Xcode to see Build Succeed alert even for a single line of a code change?

How do you display the standard iOS modal view with SwiftUI?

Finding and breaking retain cycles

Updated March 2020 with more thoroughly accurate timing diagrams, after vetting against iOS13.2, iOS 13.3, and iOS13.4 beta. Combine was announced and released this past summer with iOS 13. And wit…

What’s wrong with navigation anyway?

Learn how to perform background tasks in your iOS App.

Let’s take a look at one of the core aspects of object-oriented programming — initialization. What characteristics should an initializer ideally have, and what sort of techniques could be useful in order to keep our initializers simple and predictable?