SwiftUI Performance

概要

Provides expert guidance on identifying and resolving performance bottlenecks in SwiftUI applications, specifically targeting the new capabilities of Instruments 26 and the iOS 26 framework. The skill helps developers navigate complex performance scenarios like scrolling hitches, laggy Lists, and expensive view body updates by applying proven patterns for data caching, lazy loading, and efficient state management. It bridges the gap between raw profiling data and actionable code changes, ensuring smooth 120Hz ProMotion performance across iOS, macOS, and visionOS.

主な機能

• Long view body update identification and remediation
• Expensive operation caching and state optimization
• 60 GitHub stars
• Cause & Effect Graph diagnostic guidance
• SwiftUI Instrument profiling with Instruments 26
• List and nested ScrollView optimization patterns

ユースケース

• Fixing janky scrolling and animation stutters in xOS apps
• Diagnosing unnecessary view updates using visual profiling timelines
• Optimizing performance for lists with over 100,000 items