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Commit 21d7b3d

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import SwiftUI
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import Combine
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import PlaygroundSupport
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class Count: ObservableObject {
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@Published var value: Int = 0 {
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didSet {
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print("value: \(value)")
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}
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}
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}
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struct OuterStepperView: View {
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// @ObservedObject var counter = Count()
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@StateObject var counter = Count()
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var body: some View {
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VStack {
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Stepper("Counter: \(counter.value)") {
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counter.value += 1
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} onDecrement: {
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counter.value -= 1
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}
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}
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}
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}
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struct TwoStepperView: View {
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@State var stepper: Int = 0
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var body: some View {
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VStack {
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Stepper("Inner Stepper: \(stepper)") {
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stepper += 1
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} onDecrement: {
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stepper -= 1
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}
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OuterStepperView()
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}
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}
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}
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PlaygroundPage.current.setLiveView(TwoStepperView())
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<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
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<playground version='5.0' target-platform='ios' buildActiveScheme='true' executeOnSourceChanges='true'>
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<timeline fileName='timeline.xctimeline'/>
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</playground>

‎StateObject_Example.playground/playground.xcworkspace/contents.xcworkspacedata‎

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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>IDEDidComputeMac32BitWarning</key>
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<true/>
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</dict>
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</plist>
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<?xml version="1.0" encoding="UTF-8"?>
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<Timeline
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version = "3.0">
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<TimelineItems>
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</TimelineItems>
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</Timeline>
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>SchemeUserState</key>
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<dict>
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<key>StateObject_Example (Playground).xcscheme</key>
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<dict>
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<key>isShown</key>
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<false/>
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<key>orderHint</key>
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<integer>0</integer>
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</dict>
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</dict>
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</dict>
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</plist>

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