A weekly Swift Blog on Xcode and iOS Development

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Learn more about Swift

Shared with You implementation and testing explained

iOS 16 introduced Shared with You allowing you to showcase content shared in Messages inside your app. Users can find ...

• 5 min read Aug 09, 2022 / Swift

Sendable and @Sendable closures explained with code examples

Sendable and @Sendable are part of the concurrency changes that arrived in Swift 5.5 and address a challenging problem of ...

• 7 min read Aug 02, 2022 / Concurrency Swift

URLSessionConfiguration: Exploring opt-in configurations

URLSessionConfiguration can be used to initialize URLSession instances in Swift. While in most cases, you'll likely use the default configuration, ...

• 4 min read Jul 19, 2022 / Swift

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Learn SwiftUI

UIViewRepresentable explained to host UIView instances in SwiftUI

Adopting the UIViewRepresentable protocol allows you to host UIView instances in SwiftUI. Your SwiftUI code is converted to UIKit views ...

• 7 min read Jul 26, 2022 / SwiftUI

Using NavigationLink programmatically based on binding in SwiftUI

NavigationLink in SwiftUI allows pushing a new destination view on a navigation controller. You can use NavigationLink in a list ...

• 5 min read Jun 14, 2022 / SwiftUI

Markdown rendering using Text in SwiftUI

SwiftUI comes with built-in markdown support for text, making it easy to transform the text into bold, italic, and other ...

• 2 min read May 24, 2022 / SwiftUI

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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

App Icon Generator is no longer needed with Xcode 14

An App Icon Generator generates all required app icon sizes based on a single-size icon input file. Creating and dragging ...

• 7 min read Jun 07, 2022 / Optimization Xcode

RocketSim 8.0: Enhance your iOS Simulator

RocketSim is a developer tool that gives your iOS Simulator extra functionalities to increase day-to-day development productivity. Floating windows become ...

• 9 min read May 14, 2022 / Xcode