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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.
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.
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.
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.
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.
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.
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’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.
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.
Now that we’ve covered stacks and linked lists, queues and deques ought to be easier. In this article we’ll build both data structures in just a few lines of Swift, then explore interesting additions such as
Checkpoint 8 of Swift for Complete Beginners asks you to design a protocol to represent a building, then create two structs conforming to it. Let’s solve that now…
In this follow-on article we’re going to up our widget game by adding a second, more complex widget and exploring some configuration options that help our widgets work better on-screen.
One of the least obvious but most important clean ups lies in our use of Core Data, because right now we’re leaking data and also showing flat out wrong data. To fix these we need to use some more advanced Core Data, so let’s get into it…
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.
In this article I’m going to walk you through adding haptics to your app, to make it feel a little more alive in the user’s hand.
As folks have worked their way through the series so far, they’ve sent in various questions about implementation choices and more. In this article I want to address the eight most common questions asked so far, so that everyone can benefit.
In a previous article we already looked at a great way to download data using Combine, but in this article we’re going to examine the other side of the problem: uploading
Codable data. Apple’s API here is a little gnarly, so I’m going to show you how to wrap it in a neat container using generics and
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