Learn iOS development the Swift way: concise articles for fast learning!
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The Delegation Pattern in Swift
The delegate pattern is a cornerstone of iOS development in UIKit, enabling a class to delegate specific tasks to another object. This pattern promotes clean and modular code by adhering to the single responsibility principle, making your apps easier to maintain and extend. If you’ve ever worked with UITableView, UICollectionView,…
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Mastering Generics in Swift: From Basics to Advanced Techniques
Hey there, Swifties! Whether you’re just starting out or looking to level up your Swift game, this post will walk you through everything you need to know about generics, complete with plenty of examples. What Are Generics? At its core, generics allow you to write flexible, reusable functions and types…
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Stepper in SwiftUI
Today, we’re going to dive deep into the Stepper control – a versatile and user-friendly way to increment or decrement values in your SwiftUI apps. We’ll explore various ways to implement and customize Steppers, from basic usage to more advanced techniques. What is a Stepper? A Stepper in SwiftUI is…
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Swift Collections: Mastering the Art of Data Wrangling
Hey there, Swift aficionados! Ready to dive into the world of Swift collections? Buckle up, because we’re about to embark on a journey through the data structures that make Swift such a powerful language. We’ll explore how to wrangle your data like a pro using Swift’s built-in collection types. Swift’s…
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Map in Swift
Hey Swift enthusiasts! Today, we’re diving deep into one of Swift’s most powerful higher-order functions: map. If you’ve ever wanted to transform elements in a collection without breaking a sweat, you’re in for a treat! What is Map? At its core, map is a method that transforms each element in…
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Reduce in Swift
Greetings, Swift aficionados! Today, we’re diving into one of the most powerful yet often misunderstood higher-order functions: reduce. If you’ve ever needed to boil down a collection into a single value, reduce is about to become your new superpower. What is Reduce? The reduce method combines all items in a…
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Filter in Swift
Hello, Swift developers! Today, we’re exploring another powerful higher-order function: filter. If you’ve ever needed to separate the wheat from the chaff in your collections, filter is about to become your new best friend. What is Filter? The filter method creates a new collection containing only the elements that satisfy…
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CompactMap in Swift
Swift’s compactMap is a versatile and powerful method that combines mapping and filtering operations. It’s an essential tool for any Swift developer, allowing you to transform and clean up collections efficiently. In this post, we’ll explore compactMap through five practical examples, demonstrating its flexibility and utility in various scenarios. What…
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Access Control in Swift
Access control is a feature in Swift that allows you to control the access levels of properties, methods, and other types in your code. This means that you can specify which parts of your code can access a particular piece of functionality, and which parts cannot. Swift has five access…
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Weak, Strong and Unowned in Swift
Weak and unowned keywords are used to define weak and unowned references to objects. A weak reference is a reference to an object that doesn’t prevent the object from being deallocated by the automatic reference counting (ARC) system. An unowned reference is a reference to an object that is assumed…
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Separate UITableView/UICollectionView DataSource from a View Controller in Swift
View controllers can get really massive in some cases when you place the data source and delegate methods inside it when using a tableView or a collectionView. To overcome that you can separate them out. In this article we will take a look at how we can separate the data…
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Fall Detection API in Swift for WatchOS
I was recently implementing the Fall Detection API in Swift/SwiftUI for watchOS, and I had a lot of trouble getting it working. The documentation was very sparse, and I ended up wasting a lot of hours trying to figure out how to use the API. I was finally able to get it working after…
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Why Use Swift for iOS Development
Swift is a popular programming language for building iOS apps because it is fast, modern, and easy to use. Some of the key advantages of using Swift for iOS development are: Overall, Swift is a powerful and versatile language that is well-suited for building high-quality iOS apps. It is widely…
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The Observer Pattern in Swift
The Observer pattern is a design pattern that allows objects (observers) to register to receive notifications from another object (the subject). In Swift, the Observer pattern can be implemented using the ‘NotificationCenter‘ class and the ‘addObserver‘ method, like this: The SomeObserver class has a startObserving method that registers the handleNotification…
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The Singleton Pattern in Swift
The Singleton pattern is a design pattern that ensures that only one instance of a class can be created, and provides a global point of access to that instance. In Swift, the Singleton pattern can be implemented using a static property and a private initializer, like this: In this example,…