Encoding and decoding data is a fundamental part of iOS apps.
That is especially true for the JSON data we get from
In the past, decoding JSON in iOS apps required a lot of boilerplate code and sometimes fancy techniques.
But thanks to the Codable protocols introduced of Swift 4, today we have a native and idiomatic way to encode and decode data.
The Codable protocols allow for simple JSON decoding that can sometimes take only a couple of lines of code. But they also allow for more sophisticated techniques when you have special needs.
We will explore all that in this article.
Many developers find unit testing confusing. This is made worse by the advanced techniques you need to test classes or asynchronous code, like the one for
In reality, at the base of unit testing, there are simple fundamental concepts. Once you grasp those, unit testing suddenly becomes more approachable.
Generics are a great feature of Swift that allow you to generalize and reuse code in ways that would not be possible otherwise.
They are also a quite advanced feature and become a roadblock for many developers. The iOS SDK uses generic extensively, something that is especially true in
In this article, I will show why generics exist and how to use them in your apps.
SwiftUI is a revolutionary way to create user interfaces on iOS and other Apple platforms.
It introduces a new declarative syntax that allows you to build user interfaces packed with features quickly.
In this article, I will show you an overview of the SwiftUI features you will need in every iOS app you will ever build.
When developing iOS apps in Swift, you are bound, sooner or later, to encounter weak self references. That’s especially true in the callbacks of
At first, weak self references might seem puzzling and, sometimes, annoying. In this article, we will see why they are needed and how you can fix them in your code.
Computed properties are one of the basic features of the Swift language. But despite their simplicity, they are a great tool to keep your code clean and free of bugs. I rely heavily on computed properties for any code I write.
Since the introduction of
SwiftUI, I have seen many developers write all their code inside views. Unfortunately, the simplicity of the framework seems to encourage a return of many poor practices.
But you do not build robust, maintainable apps by gluing together random pieces of code.
Sure, you can search on Google for specific tasks, copy and paste some code into your project and make it work, somehow.
That works if your app is small and simple. But as soon as you go beyond basic tutorials, you inevitably get serious problems.
That’s why the MVC and MVVM patterns exist. In this article, we will see how they apply to SwiftUI.