Learn SWIFTUI with Real Code Examples
Updated Nov 23, 2025
Performance Notes
Leverage SwiftUI’s diffing for UI updates
Avoid heavy computations inside view body
Use LazyVStack/LazyHStack for large lists
Minimize nesting to reduce layout cost
Test on real devices for performance profiling
Security Notes
Validate and sanitize all user input
Follow Apple’s secure coding guidelines
Use Keychain for sensitive data
Use HTTPS for network communications
Keep Swift/Xcode updated for latest security fixes
Monitoring Analytics
Use Apple Analytics and Firebase
Monitor crashes with Crashlytics
Profile performance with Instruments
Track user behavior with built-in metrics
Audit app for battery and memory usage
Code Quality
Follow Swift and SwiftUI best practices
Document views and modifiers
Unit test state and logic
Profile UI performance with Instruments
Ensure accessibility and localization