1 · Values, Optionals & Errors
Complete
8 lessons · 3 exercises · 1 checkpoint
Foundations · Path A
Concurrency you can trust
Swift 6's strict concurrency, the @Observable model, and SwiftData —
taught by shipping small, real apps.
Overall progress
38%
4 of 6 units started · 2 projects shipped
Units
Annual WWDC re-verification · last checked Jun 2026Lesson 5 of 9 — “Sending values across actors”
3 · Observation & SwiftData
Unlocks after the Concurrency checkpoint
Project ladder
10 mini-clones · climbing backend tiersShippedTier 0
Tally
A counter that survives relaunch. State & @Observable.
ShippedTier 1
Shelf
Local library with SwiftData. Queries & migration.
BuildingTier 1
Ripple
Offline-first notes with actor-isolated sync engine.
Open workspace