Migrate Swift 4.2 to 5.x
summary
Migrating from Swift 4.2 to 5.x focuses on concrete changes: use map/flatMap on Result to transform or chain fallible returns; compute collection diffs with OrderedCollectionDifference returns insert/remove arrays and change operations but prefer UIKit/UICollectionView diffable data sources for UI updates; adopt opaque return types to fix associated-type return problems and avoid extra heap/memory overhead; implement reusable state like UserDefaults or simple DI via @propertyWrapper wrappedValue getter/setter.
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chapters (10)
- 0:00Introduction
- 1:17Swift 5.x overview
- 2:20Session goals and audience
- 3:02Result type and map/flatMap
- 4:57Ordered Collection Diff
- 7:10Opaque Type explained
- 11:38Opaque Type in UI
- 13:25Property wrappers explained
- 15:12Property wrappers examples
- 16:25Summary and Swift 6.0 prep
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