Third-party libraries help developers build apps faster but often come with a license. The MIT license is likely the most common, but there are many others that, together, require you to acknowledge the usage of the library in return for getting free access. I’m not going to dive deep into the details of each license …
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Extensions in Swift: How and when to use them
Extensions in Swift allow you to extend an existing class, struct, enumeration, or protocol with new functionality. Whether it’s a custom type defined by you or a current type inside of a framework, extensions can create custom accessors and enhance the types you work with. So-called retroactive modeling allows you to extend types for which …
How to use @ScaledMetric in SwiftUI for Dynamic Type support
The @ScaledMetric property wrapper in SwiftUI allows you to adopt custom values to dynamic type settings. Your custom values will scale proportionally whenever the user changes the dynamic type setting. While elements like text scale are automatically based on the Dynamic Type setting, other values like padding or image sizes might not. Connecting these to …
App Preview Videos Capturing using the Xcode simulator
App Preview Videos allow you to increase the visibility of your app in the App Store. While it’s best to validate whether it leads to higher conversions, it’s certain a moving demo will catch the attention quicker. Creating a qualitative App Preview Video can be time-consuming, especially since Apple has several specifications to which your …
Status bar overrides in the iOS Simulator
Status bar overrides in the iOS Simulator allow you to change the appearance of the network, cellular, time, and battery. You can use this feature to beautify your screenshots and ensure a consistent appearance across, for example, your App Store screenshots. While functionality for overriding the iOS status bar has existed since Xcode 11, it …
ScrollView Bounce Behavior configuration in SwiftUI
A ScrollView bounce behavior configuration allows you to define whether a scrollable view bounces when reaching the end of its content. Whether it’s a horizontal or vertical scrolling list, you can configure both directions using view modifiers in SwiftUI. There are common scenarios for us to build when it comes down to lists. You might …
SwiftLee Weekly benefits
Here’s a unique welcome gift I’m only sharing with my newsletter subscribers: Download the “10 Tips to get your app featured in the App Store” PDF Course Discount: From Side Project to Going Indie Ready to turn your side projects into independence? This Going Indie course will help you develop the right mindset, tools, and …
Concurrency-safe global variables to prevent data races
Concurrency-safe global variables help you prevent data races and allow you to solve strict-concurrency-related warnings. Since you can access global variables from any context, ensuring access is safe by removing mutability or conforming to Sendable is essential. As a developer, you must prevent data races since they can make your apps crash unexpectedly. When preparing …
@Observable Macro performance increase over ObservableObject
The @Observable Macro was first introduced during WWDC 2023 to replace ObservableObject and its @Published parameters. The macro allows you to remove all published properties while still being able to redraw SwiftUI views when a change occurs automatically. I highly recommend replacing your ObservableObject instances since the new macro prevents unnecessary SwiftUI redraws. As part …
Swift Newsletters: How to stay up to date as an app developer
Following the Swift Evolution can be time-consuming, but Swift newsletters enable you, as an app developer, to stay current. The language is moving fast, and new features appear every year. While you might be able to develop apps without adopting new features immediately, finding a structured way to keep yourself in the loop is necessary. …