Recent Posts
Xcode Build Insights: Keep track of project compilation times
Xcode Build Insights lets you keep track of compilation times to ensure your project doesn't suddenly become slow to build ...
Solve Missing API declaration using required reason (ITMS-91053)
Apps submitted to the App Store must define API declarations using the required reasons. Apps that don't will be rejected ...
Using @Environment in SwiftUI to link Swift Package dependencies
The @Environment property wrapper in SwiftUI allows you to read values from a view's environment. You're able to configure an ...
Do you convert more users when they’re in bed or walking?Elevate above the competition by understanding user intent through real-world context. Context Insights helps you uncover unique behavior patterns to optimize user engagement and retention. Try Context Insights for free.
Swift Keywords
Do you know how to use each keyword in Swift?
Click on the keyword to learn more and explore code examples.
Learn more about Swift
Optionals in Swift explained: 5 things you should know
Optionals are in the core of Swift and have existed since the first version of Swift. An optional value allows ...
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 ...
Swift Evolution: Reading and learning from proposals
The Swift Programming Language constantly evolves, and most of its changes result from public proposals inside the Swift Evolution repository ...
Learn SwiftUI
Using @Environment in SwiftUI to link Swift Package dependencies
The @Environment property wrapper in SwiftUI allows you to read values from a view's environment. You're able to configure an ...
Identifiable protocol in SwiftUI explained with code examples
The Identifiable protocol in SwiftUI allows you to add a unique object identity. The protocol requires a single ID property ...
Key press events detection in SwiftUI
Key press events detection in SwiftUI allows you to respond to a keyboard key like return (enter), shift, command, and ...
Build Apps Faster using RocketSim
Recommend by Apple as an “Essential Tool for Developers”, RocketSim helps thousands of engineers to save hours per week. Discover these articles and learn how you can leverage RocketSim to improve your workflow:
App Actions
- Universal Links implementation on iOS
- Deeplink URL handling in SwiftUI
- Location Simulation in Xcode’s Simulator
- Optimizing your app for Network Reachability
- Testing push notifications on the iOS simulator
App Actions Perform Menu
- Localization testing in Xcode
- User Defaults reading and writing in Swift
- Xcode Simulator Directories Exploration
RocketSim Tools
Combine all the things
@Published risks and usage explained with code examples
@Published is one of the property wrappers in SwiftUI that allows us to trigger a view redraw whenever changes occur ...
RunLoop.main vs DispatchQueue.main: The differences explained
RunLoop.main and DispatchQueue.main are often used as schedulers within Combine. During code reviews, I often encounter inconsistency in using one ...
PassthroughSubject vs. CurrentValueSubject explained
PassthroughSubject and CurrentValueSubject are two types from the Combine framework that conforms to the Subject protocol. Both are very similar ...
Do you know in which real-world contexts your users are using your App?The real-world context of a user is key to understand intent. Explore user behavior in a completely new way and expand your mental model about your audience to enhance user experience and retention. Try Context Insights for free.
Dive into Core Data
How to observe NSManagedObject changes in Core Data using Combine
Observing changes in Core Data NSManagedObject instances with Combine publishers can be a great solution to keep your user interface ...
Data validation on insertion, update, and deletion in Core Data
Data validation in apps is important to make sure we save data conforming to the business rules. A name should ...
Derived Attributes to improve Core Data Fetch Performance
Derived attributes are available since iOS 13 and aim to improve fetch performance in many different scenarios. Although we have ...
Be an expert on Xcode
Xcode Build Insights: Keep track of project compilation times
Xcode Build Insights lets you keep track of compilation times to ensure your project doesn't suddenly become slow to build ...
Solve Missing API declaration using required reason (ITMS-91053)
Apps submitted to the App Store must define API declarations using the required reasons. Apps that don't will be rejected ...
Symbolicate crash logs with Xcode
When you receive an unreadable crash report, you can symbolicate crash logs with the help of Xcode. As a developer, ...
Get better at debugging
Debugging SwiftUI views: what caused that change?
Debugging SwiftUI views is an essential skill when writing dynamic views with several redrawing triggers. Property wrappers like @State and ...
OSLog and Unified logging as recommended by Apple
OSLog is a replacement for print, and NSLog and Apple's recommended way of logging. It has different logging levels, like ...
Network Extension Debugging on macOS
A Network Extension on macOS allows you to create content filters, DNS proxies, and more. They integrate nicely into the ...
Improve your workflow
Test-Driven Development (TDD) for bug fixes in Swift
Test-driven development (TDD) is a technique that requires you first to write a failing test before you start implementing a ...
Third-party libraries acknowledgments using a Settings bundle
Third-party libraries help developers build apps faster but often come with a license. The MIT license is likely the most ...
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 ...
Optimize yourself and improve
The power of consistency in side projects
The success of your side projects can be mixed, but consistency brings power to your results. It's often easier to ...
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 ...
Using campaign links to track impressions, downloads, and sales
Campaign links open your App Store product page and allow you to track the performance of your marketing channels. As ...
Explore categories
Swift
Combine
Concurrency
SwiftUI
Core Data
Xcode
Debugging
Workflow
Optimization
Swift Charts
Most Popular Posts
- Xcode Build Insights: Keep track of project compilation times
- Async await in Swift explained with code examples
- MainActor usage in Swift explained to dispatch to the main thread
- Solve Missing API declaration using required reason (ITMS-91053)
- Sendable and @Sendable closures explained with code examples