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It’s not hard to make a basic property wrapper, but if you want one that automatically updates the
body property like
@State you need to do some extra work. In this article I’ll show you exactly how it’s done, as we build a property wrapper capable of reading and writing documents from our app’s container.
Trees are an extraordinarily simple, extraordinarily useful data type, and in this article we’ll make a complete tree data type using Swift in just a few minutes. But rather than just stop there, we’re going to do something quite beautiful that I hope will blow your mind while teaching you something useful.
Swift’s optionals are implemented as simple enums, with just a little compiler magic sprinkled around as syntactic sugar. However, they do much more than people realize, and in this article I’m going to demonstrate some of their power features that can really help you write better code – and blow your mind along the way.
SwiftUI gives us a modifier to make simple shadows, but if you want something more advanced such as inner shadows or glows, you need to do extra work. In this article I’ll show you how to get both those effects and more in a customizable, flexible way.
Anyone can write Swift code to fetch network data, but much harder is knowing how to write code to do it respectfully. In this article we’ll look at building a considerate network stack, taking into account the user’s connection, preferences, and more.
Before you dive in to the first article in this course, I want to give you a brief overview of our goals, how the content is structured, as well as a rough idea of what you can expect to find.
Generics are one of the most powerful features of Swift, allowing us to write code once and reuse it in many ways. In this article we’ll explore how they work, why adding constraints actually helps us write more code, and how generics help solve one of the biggest problems in Swift.
While I’m sure you’re keen to get started programming immediately, please give me a few minutes to outline the goals of this course and explain why it’s different from other courses I’ve written.
In this article you’ll learn how memoization can dramatically boost the performance of slow functions, and how easy Swift makes it thanks to its generics and closures.
Phantom types are a powerful way to give the Swift compiler extra information about our code so that it can stop us from making mistakes. In this article I’m going to explain how they work and why you’d want them, as well as providing lots of hands-on examples you can try.
It is my firm belief that every iOS app should be usable to everyone, and putting in the work to make your app function well no matter who is using it says a lot about the kind of developer you are.
In this article I’m going to walk you through building a
WaveView with SwiftUI, allowing us to create beautiful waveform-like effects to bring your user interface to life.
If you watch a flock of birds you’ll see it exhibits all sorts of complex behaviors as they swarm around in the air – they often stay together but not too close, they move in the same direction but also seem to change direction at the same time. In this article we will create flocking behavior in SwiftUI, using Craig Reynolds’ classic boids algorithm.
There are many data structures in computing, but stacks are one of the most fundamental – they get used in so many places, often without us even realizing. Helpfully, they are also one of the easiest types to learn, which makes them a great starting point for this new series on data structures.
When it comes to learning operator overloading, there is one operator that Swift lacks, that many other languages have, and is genuinely useful. In this article I’ll show you how to build the spaceship operator in Swift – it’s surprisingly easy, and useful too.
Although our SwiftUI layouts conform to the View protocol, if you were to try to think about them in MVC terms I’d say they were more like controllers. And like controllers from UIKit, we need to put in some work to keep SwiftUI views lean – let’s look at this now…
Our default sort for project items works well enough, but with a little extra work we can let users choose how to sort them. In this article I’m going to walk you through several different ways of approaching this problem, some that I think work well, and others not so much…
In this article we’re going to look at how easy it is to rebuild the iOS lock screen. Yes, this isn’t hard, but along the way I think you’ll pick up a few cool SwiftUI tricks, including better date formatting, haptic buttons, and more.
In a previous article I showed you a smart, simple and safe way of fetching data from the internet using Combine. This article I want to look at how to handle multiple network requests safely, ensuring that both complete before you update your user interface.
String interpolation is easy, right? Wrong! String interpolation is actually a huge power feature in Swift, and we have a massive array of functionality on hand to help us customize it. In this article I’ll show you just how much control we have, and how to use that control to make your code easier to read.
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