Latest Writing

• Debug NSUserActivity in SwiftUI with Hidden Logging Flag

  Enable _defaultSwiftUIActivityEnvironmentLoggingEnabled to debug Handoff, Spotlight, and userActivity issues

  2026年2月1日

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  • SwiftUI
  • NSUserActivity
  • Debugging
  • Handoff
  • Spotlight

• DebugReplaceableView and Swift 6.2's Multiple Type Erasers

  How Swift 6.2 enabled multiple @_typeEraser attributes for SwiftUI's new debug optimization

  2026年1月26日

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  • SwiftUI
  • Swift
  • Compiler
  • iOS26
  • TypeEraser
  • Debug

• static const in header cost: dyld ships with redundant 2KB data copy

  Analysis of how static const variables in header files create duplicated symbols in dyld, leading to unnecessary binary bloat

  2025年10月26日

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  • dyld
  • C++

• SwiftUI Transition Affects onAppear/onDisappear Call Order

  How transition types change the order of appearance callbacks

  2025年10月14日

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  • SwiftUI
  • Transition
  • onAppear
  • onDisappear

• SwiftUI's _ConditionalContent and Implicit Root Behavior

  Understanding how _ConditionalContent uses makeImplicitRoot and implicitRootBodyInputs

  2025年10月14日

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  • SwiftUI
  • _ConditionalContent
  • DSL
  • AttributeGraph
  • ViewBuilder

• Testing Private Members in Swift with @_private(sourceFile:)

  A practical guide to using Swift's @_private(sourceFile:) attribute for testing private members, with best practices for safe usage in production code

  2025年10月4日

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  • Swift
  • Testing
  • UnderscoreAttribute