@Published and Observation in Combine
How @Published works under the hood to emit changes through Combine publishers.
Welcome
`@Published` is a property wrapper from the Combine framework that emits a new value through a publisher whenever the property changes.
@Published Basics
```swift
import Combine
class Counter: ObservableObject {
@Published var count = 0
}
let c = Counter()
let cancel = c.$count.sink { print("Count: \($0)") }
c.count += 1 // "Count: 1"
c.count += 1 // "Count: 2"
```
All lessons in this course
- Creating a Custom Property Wrapper
- Projected Values with $binding
- @Published and Observation in Combine
- Composing Multiple Property Wrappers