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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 ...

• 3 min read Nov 28, 2023 / Swift

User Defaults reading and writing in Swift

User Defaults are the go-to solution for Swift applications to store preferences that persist across launches of your app. It's ...

• 4 min read Oct 23, 2023 / Swift

Thread dispatching and Actors: understanding execution

Actors ensure your code is executed on a specific thread, like the main or a background thread. They help you ...

• 4 min read Oct 17, 2023 / Concurrency Swift

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Learn 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

App Intents Spotlight integration using Shortcuts

App Intents have been new since iOS 16 and offer a programmatic way to service your app's content and functionality ...

• 3 min read Jul 05, 2023 / SwiftUI

ContentUnavailableView: Handling Empty States in SwiftUI

ContentUnavailableView is a SwiftUI view introduced in iOS 17 during WWDC 2023. It allows you to handle cases of networking ...

• 3 min read Jun 06, 2023 / 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:

App Actions

RocketSim Tools

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

RocketSim 12.0: Builds Apps Faster

RocketSim is a developer tool that gives your Xcode Simulator extra functionalities to increase day-to-day development productivity. A floating window ...

• 15 min read Nov 06, 2023 / Xcode

Build performance analysis for speeding up Xcode builds

Build performance can be analyzed in Xcode to speed up your builds. This can quickly speed up your workflow and ...

• 7 min read Aug 15, 2023 / Optimization Xcode

Xcode Debug Console Tour: Exploring All Options

The Xcode Debug Console allows you, as a developer, to explore logs and debug issues with your apps. All your ...

• 4 min read Aug 08, 2023 / Xcode

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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 ...

• 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

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 ...

• 4 min read Apr 04, 2023 / Debugging

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Improve your workflow

Picking your minimum iOS version to support

When a new iOS version arrives, it's oftentimes a moment to reflect on the supported iOS versions and see to ...

• 7 min read Oct 03, 2023 / Workflow

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

Location Simulation in Xcode’s Simulator

Location Simulation is a critical feature for apps that provide location access. You want to mimic the environment of real ...

• 4 min read Mar 28, 2023 / Workflow

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