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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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Our next step is to build a simple form so the user can edit items, which in itself isn’t too hard. However, along the way I want to show you some useful tips for tracking changes and updating the UI – it’s not quite as straightforward as you might expect.
Particle systems let us create special effects such as confetti, fire, smoke, rain, and snow, all by adjusting a range of inputs. In this article we’re going to build our own particle system entirely driven by SwiftUI, so you can easily add some sparkle to your apps.
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.
Even after writing stacks of unit tests, chances are your test coverage is still well below 40%. Those units tests are really important, but if you really want great test coverage you need to add some UI tests and that’s exactly what we’re going to work on here.
Pie charts are a classic way of showing divided data visually, and they represent interesting challenges around sizing and angles. In this article we’ll build a complete pie chart view from scratch using SwiftUI, ensuring it works using animation, and also modify it to support donut-style charts too.
I already introduced how the internals of optionals work, including how they use conditional conformance and how to avoid infinitely sized structs. In this video I’m going to go further as we look at how our knowledge of
Optional can be translated to
Result, why it’s so important that optionals are functors and monads, and more.
Boxing allows us to wrap up a struct in a class, to make it easy to share in several places. I’ve touched on boxing briefly previously, but here I want to take the concept much further to add useful protocol conformances that really powerful up its usefulness.
Most of the time the built-in iOS controls are great, but sometimes you want something just a little different. In this article I’m going to walk you through how you can take complete control over the way toggle switches work in SwiftUI, providing custom rendering and interactions.
Although apps can live in the background for quite a while, eventually they will be terminated. But when a user relaunches them, it’s a good idea to bring them roughly back to where they were, and with state restoration we can do just that.
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