Core Data Aggregate Functions
Learn from a Google Developer Expert: Core Data is a beautifully designed object mapping and persistence framework -- big kudos to the Apple engineers.
iOS
What Is a Core Data Fault
This tutorial zooms in on an important topic for anyone working with Core Data, faulting. Faulting is a concept that often confuses developer new to Core Data. Before I explain what faulting is, I want to show it to you.
What Are Core Data Query Generations
Earlier this month, I wrote about Core Data faults. Faulting is a key concept of the Core Data framework. It is because of faulting that Core Data is as performant as it is and it ensures Core Data's memory footprint remains at an acceptable level.
Code generation using Swift Package Plugins
How to build a Swift Package Plugin to automatically generate unit tests from input Swift files.
iCloud Key-Value Store with NSUbiquitousKeyValueStore
Ubi–what!? The NSUbiquitousKeyValueStore syncs key-value store data across iOS and Mac devices via iCloud. Let's find out how you can use it with Swift!
CloudKit 101
Gui Rambo writes about his coding and reverse engineering adventures.
Variable WidgetBundle configuration based on conditions
Use control flow statements inside a WidgetBundle to return a different set of widgets base on a if-statement condition.
Stop Xcode 14 beta from draining your battery
There's a bug in Xcode 14 betas 4-6 that causes your CPU to go crazy and drain your battery. Here's a workaround.
SwiftUI Button Tutorial: Customization
Learn how to easily customize your app buttons style with the minimum effort by leveraging the latest SwiftUI button modifiers.
Focus Management in SwiftUI: Getting Started
Learn how to manage focus in SwiftUI by improving the user experience for a checkout form.
How to create custom SF Symbols with Sketch
Since Apple introduced SF Symbols in 2019, many product designers for iOS, including myself, have been asking themselves when it will
The Ultimate Guide to the SwiftUI 2 Application Life Cycle
Everything you need to know about the new application life cycle in SwiftUI 2
Avoiding singletons in Swift
There seems to almost be a consensus in the community that singletons are
Dependency injection using factories in Swift
Dependency injection is an essential tool when it comes to making code more testable. This week, let's take a look at a dependency injection technique that lets us enable testability without forcing us to write massive initializers or complicated dependency management code.
Clean Architecture for SwiftUI
Are VIPER, RIBs, MVVM, VIP, or MVC suitable for a SwiftUI project?