NullabilityAnnotationsObjc

Sample Objective-C code demonstrating Objective-C's nullability annotations tell the compiler which pointers can be nil. They catch bugs at compile time and make your code bridge to Swift cleanly..

This project accompanies the article: Nullability Annotations in Objective-C

Requirements

• Xcode 26.2+
• iOS 26.0+

Getting Started

1. Clone this repository
2. Run xcodegen generate (requires XcodeGen)
3. Open NullabilityAnnotationsObjc.xcodeproj
4. Build and run

What's Included

• main.m: Source file
• AppDelegate.h: Source file
• AppDelegate.m: Source file
• User.h: Source file
• User.m: Source file
• UserManager.h: Source file
• UserManager.m: Source file
• DataStore.h: Source file
• DataStore.m: Source file
• LegacyAPI.h: Source file
• LegacyAPI.m: Source file
• ModernAPI.h: Source file
• ModernAPI.m: Source file
• ResettableConfig.h: Source file
• ResettableConfig.m: Source file
• ViewController.h: Source file
• ViewController.m: Source file

Language

This project is written in Objective-C to demonstrate traditional iOS development patterns.

Learn More

Read the full article at BleepingSwift for detailed explanations and additional examples.

License

MIT License - see LICENSE for details.