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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.
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.
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.
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.
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.
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.
Assertions allow us to have Swift silently check the state of our program at runtime, but if you want to get them right you need to understand some intricacies. In this article I’ll walk you through the five ways we can make assertions in Swift, and provide clear advice on which to use and when.
Apple’s Foundation framework makes it easy for us to convert any kind of measurement into any other kind of measurement. In this article I’ll show you how to make the most of these APIs, but also why it’s so useful that they work with Swift features such as operator overloading, plus important protocols such as
Bar charts are one of the simplest and most common ways of representing data visually, and are often taught to kids at a young age. In this article I’ll show you how easy it is to render bar charts in SwiftUI, and show you various customization options to bring those charts to life.
If you’re looking for a simple and fun special effect to add to your code, I’ve got just the thing for you. In this article I’m going to walk you through building a
FlipView with SwiftUI, which will encapsulate how to move between a front view and a back view using a 3D flip animation.
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.
If you have nice, clean JSON then using Swift and
Codable is like a dream come true. But what if you have messy JSON, or JSON where you really don’t know what you’ll receive ahead of time? In this article I’ll show you how to handle any kind of JSON in an elegant way, without relying on third-party libraries.
There are lots of UI mistakes we can make in programming, but unless our bugs actually get in the way of functionality most users don’t care that much. But there is one exception, and we’re going to look at it here: in this article I’ll show you how to handle names correctly – the most personal data of all.
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.
Arrays and sets have their own advantages and disadvantages, but what if we could combine them both to make an ordered set? We can! And in this article that’s exactly what we’ll do.
Many coding problems are designed to perform the same operation on lots of data, and in fact they are so common Apple has a whole framework to make it better: Accelerate. In this video I’ll give you an introduction to Accelerate using practical examples so you can see just how easy it is.
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.
In part one of this tutorial we looked at how to customize string interpolations on a type-by-type basis, giving you more control over how your code works. In this second part we’ll look at a second powerful use for interpolation: building whole types from scratch.
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.
In this second tutorial on generics, we’re going to explore creating several different generic types, look at extending generics, and look at how we can apply our generics knowledge to create property wrappers.
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