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Do you know how to use each keyword in Swift?
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Learn more about Swift

Typed throws in Swift explained with code examples

Typed throws are new since Xcode 16 and allow you to define the type of error a method throws. Instead ...

• 3 min read Jul 02, 2024 / Swift

Async await in Swift explained with code examples

Async await is part of the new structured concurrency changes that arrived in Swift 5.5 during WWDC 2021. Concurrency in ...

• 9 min read Jun 25, 2024 / Concurrency Swift

Swift Package Manager framework creation in Xcode

Swift Package Manager (SPM) is Apple's answer for managing dependencies. We're all familiar with tools like CocoaPods and Carthage, but ...

• 6 min read Jun 04, 2024 / Swift

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Learn SwiftUI

Memory consumption when loading UIImage from disk

Memory consumption can quickly increase if you load many images from the disk using UIImage. You'll generally load images from ...

• 5 min read Jul 23, 2024 / Debugging SwiftUI

Why macOS Development is Perfect for Indie Developers

Building apps for macOS offers developers a fantastic opportunity to expand their skills, create useful utilities to solve their problems, ...

• 6 min read Jul 16, 2024 / SwiftUI

@Previewable: Dynamic SwiftUI Previews Made Easy

Xcode 16 introduced the @Previewable macro for SwiftUI Previews, allowing you to use dynamic properties inline in previews. You'll be ...

• 2 min read Jun 11, 2024 / SwiftUI

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:

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App Actions Perform Menu

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The operation couldn’t be completed: solving errors in Swift

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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 ...

• 4 min read Mar 01, 2022 / Combine SwiftUI

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 ...

• 3 min read Dec 07, 2021 / Combine

PassthroughSubject vs. CurrentValueSubject explained

PassthroughSubject and CurrentValueSubject are two types from the Combine framework that conforms to the Subject protocol. Both are very similar ...

• 4 min read Sep 07, 2021 / Combine

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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 ...

• 3 min read Apr 20, 2021 / Combine Core Data

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 ...

• 3 min read Nov 10, 2020 / Core Data

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 ...

• 3 min read Nov 03, 2020 / Core Data

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Be an expert on Xcode

Inspect network traffic using the Xcode Simulator

Inspecting network traffic is an essential skill for app developers. Several tools allow you to monitor requests going in and ...

• 3 min read Jul 09, 2024 / 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 ...

• 4 min read May 07, 2024 / Xcode

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 ...

• 4 min read Apr 30, 2024 / Xcode

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Get better at debugging

Memory consumption when loading UIImage from disk

Memory consumption can quickly increase if you load many images from the disk using UIImage. You'll generally load images from ...

• 5 min read Jul 23, 2024 / Debugging SwiftUI

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 ...

• 6 min read Nov 13, 2023 / Debugging SwiftUI

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 ...

• 6 min read Jul 18, 2023 / Debugging Workflow

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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 ...

• 4 min read Mar 12, 2024 / Workflow

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 ...

• 4 min read Feb 27, 2024 / Workflow

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 ...

• 3 min read Feb 04, 2024 / Workflow

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