Weekly articles about Swift and iOS Development

Get started with NSPredicate to filter NSFetchRequest in Core Data

Get a quick overview on how to use predicates to filter fetch request results.

Developer guide on machine learning for iOS with Core ML

Learn basic machine learning concepts and how to use machine learning in iOS.

Quick tip on how to unit test Swift optionals with XCTUnwrap

Learn how to shorten if let and guard statements when unit testing.

Developer guide on passkeys for iOS

Learn how passkeys work and how to implement them in an iOS application.

How to use custom names for Swift properties when decoding JSON data

Learn to use Swift's CodingKey protocol.

Quick guide on fastlane for iOS development

Learn to automate steps like running tests, code signing, build uploading and more.

How to use the @available attribute in Swift

Learn to make Swift code only available for certain language versions or platforms.

How to import Objective-C types as optionals or non-optionals into Swift

Learn how to use nullability declarations and macros.

Developer guide on keychain for iOS

Learn how to securely store passwords with Apple's Keychain API.

Understanding basic animations in SwiftUI

Learn different options to animate SwiftUI views.

How to store a Swift struct in UserDefaults

Learn about the pitfalls when using Codable types in UserDefaults.

Preparing for a technical iOS job interview with questions and answers

This is a book preview including one example question and answer for every main topic.