Implementing new features in StoreKit — Before you read this story, note an updated version [as in code] can be found here. Subscriptions, Receipts, and StoreKit in iOS 14 The gold standard of in-app purchases and subscriptionsmedium.com Much of the buzz at WWDC2020 was given over to SwiftUI 2.0 …

A look at some different ways to link a class with a SwiftUI interface — I was playing around with SpriteKit, and it occurred to me that it might be a good exercise to remind myself of how many different ways I could link my SwiftUI code with my SpriteKit scene/class. …

Explore the various types of Constraints and how to use them in a SwiftUI-powered application — Most would agree that augmented reality has yet to find its niche, with the reasoning most frequently quoted is: the absence of a killer app. A truism, although I suspect another reason is that it is tough to code augmented reality apps. It is a challenge because the math behind…

Validating user input using the new Regex syntax — You can trace the history of Regex back to an American mathematician, Stephen Cole Kleene, who proposed the idea of text representing patterns using mathematical expressions of sorts in 1951. …

Using SceneView running within SwiftUI interface — I was working on an article that relied on having a 3D editor of sorts to set up a simulation, and well — more than halfway through, it became evident that the simple editor I had built was not going to cut it. So I decided to document my journey…

Creating a snake that’s scared of itself — Having built a snake game the other day, it occurred to me that I might use the source to build something similar and yet different: a self-avoiding walker. Turns out, this task is harder than you may think. The goal is to modify the snake source so that it creates…

A practical look at the new protocol introduced in SwiftUI — When I started coding, there were no frameworks to speak of. When you wanted to plot a circle on the screen, it took dozens or more lines of code than today. As science has developed, the concept of abstraction and frameworks has become the way forward. Today, if I want…

A look at the code to create ASCII Art —

A look at what it takes to build another classic game — The other week I published an article about my journey to build the Tetris game a challenge. You can read about it here. Another similar but different game that predated Tetris; another classic a more straightforward implementation is the snake game. …