Composing Multiple Property Wrappers
Stacking property wrappers and understanding their initialization order.
Welcome
Multiple property wrappers can be applied to a single property. The order matters — outer wrappers wrap inner ones — and initialization order follows declaration order.
Stacking Wrappers
```swift
@propertyWrapper struct A { var wrappedValue: Int { didSet { print("A") } } init(wrappedValue: Int) { self.wrappedValue = wrappedValue } }
@propertyWrapper struct B { var wrappedValue: Int { didSet { print("B") } } init(wrappedValue: Int) { self.wrappedValue = wrappedValue } }
struct S { @A @B var x = 0 }
```
All lessons in this course
- Creating a Custom Property Wrapper
- Projected Values with $binding
- @Published and Observation in Combine
- Composing Multiple Property Wrappers