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| struct ContentView: View { | |
| let data = (1...10000).map { "Item \($0)" } | |
| let columns = [ | |
| GridItem(.flexible()), | |
| GridItem(.flexible()), | |
| GridItem(.flexible()) | |
| ] | |
| var body: some View { |
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| import SwiftUI | |
| struct SizePreferenceKey: PreferenceKey { | |
| static var defaultValue: CGSize = .zero | |
| static func reduce(value: inout CGSize, nextValue: () -> CGSize) {} | |
| } | |
| public extension View { | |
| func readSize(onChange: @escaping (CGSize) -> Void) -> some View { | |
| self |
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| struct Test: View { | |
| private let coordinateSpaceName = "StickyHeaderCoordinateSpaceName" | |
| @State var counter: Int = 0 | |
| @State var forEachId: UUID = UUID() | |
| var body: some View { | |
| ScrollView { | |
| LazyVStack { | |
| GeometryReader { proxy in | |
| Color.red |
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| extension View { | |
| /// Useful for applying modifiers that are limited to certain iOS versions | |
| func modify<Content>(@ViewBuilder _ transform: (Self) -> Content) -> Content { | |
| transform(self) | |
| } | |
| } |
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| struct ScrollOffsetPreferenceKey: PreferenceKey { | |
| static var defaultValue: CGPoint = .zero | |
| static func reduce(value: inout CGPoint, nextValue: () -> CGPoint) {} | |
| } | |
| struct ScrollOffsetTestView: View { | |
| var body: some View { | |
| GeometryReader { proxy in | |
| List { | |
| SwiftUI.Section( |
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| class TestButton: UIButton { | |
| init() { | |
| super.init(frame: CGRect.zero) | |
| self.layer.masksToBounds = true | |
| self.layer.borderColor = UIColor.black.cgColor | |
| self.layer.borderWidth = 1 / UIScreen.main.scale | |
| self.layer.cornerCurve = .continuous |