Your First iOS App: Data Flow in SwiftUI

Jun 25 2026 · Swift 6, iOS 26, Xcode 26

Lesson 03: SwiftUI Bindings

SwiftUI Bindings

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If you build and run Bullseye, or interact with it in the canvas, you’ll notice that you can’t currently move the slider.

@State private var sliderValue: Double = 50.0
Slider(value: $sliderValue, in: 1.0...100.0)
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