Hacking with Swift+ delivers high-quality tutorials for subscribers, with each tutorial coming as a 4K Ultra HD video and in text form so you can read or watch – whatever works best for you.
So, you can get this full video and article as well as all other subscriber-only tutorials and all future tutorials – all by subscribing to Hacking with Swift+ today.
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.
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.
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 we’re going to look at the map()
function, which transforms one thing into another thing. Along the way we’ll also be exploring some core concepts of functional programming, so if you read no other articles in this course at least read this one!
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.
UPDATED: 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.
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.
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.
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.
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.
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.
Getting ready for a job interview is tough work, so I’ve prepared a whole bunch of common questions and answers to help give you a jump start. But before you get into them, let me explain the plan in more detail…
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.
This challenge asks you to disallow certain words, let users start a new game whenever they want, and also track player scores. Let’s tackle it now…
In this article we’re going to build a tool that designs particle systems for SwiftUI apps, all built on top of the TimelineView
and Canvas
that were added in SwiftUI. I think you’ll really be amazed how fast this comes together!
UPDATED: We’ve just put in place the last major code to complete part one of this app. Let’s clean up just a tiny bit, then look over what we’ve made so far.
Codable
is the fastest and easiest way to store Swift objects, but what happens when your data types need to evolve to add extra information? In this tutorial I’ll show you the traditional way this is solved, and also a different version that I find significantly easier to use.
This is crying out for an example, so once you get the basic answer out of the way back it up with some actual code example where final
is the right choice.
This might sound like a trivial property wrappers question testing your factual knowledge, but really it’s an architectural decision: what are the advantages and disadvantages of each, and when do they matter?
Link copied to your pasteboard.