SwiftUI网格项内存泄漏

class MyModel: ObservableObject {
    @Published var data: String = ""
    var view: MyView?
}

struct MyView: View {
    @ObservedObject var model: MyModel
    
    var body: some View {
        Text(model.data)
            .onAppear {
                model.view = self
            }
    }
}

class MyModel: ObservableObject {
    @Published var data: String = ""
    weak var view: MyView?
}

struct MyView: View {
    @ObservedObject var model: MyModel
    
    var body: some View {
        Text(model.data)
            .onAppear {
                model.view = self
            }
    }
}

struct MyModalView: View {
    @Environment(\.presentationMode) var presentationMode
    
    var body: some View {
        VStack {
            Text("Modal Content")
            Button("Close") {
                presentationMode.wrappedValue.dismiss()
            }
        }
    }
}

class MySingleton {
    static let shared = MySingleton()
    weak var view: MyView?
}

class MyModel: ObservableObject {
    @Published var data: String = ""
    var observers: [Any] = []
    
    func addObserver(_ observer: Any) {
        observers.append(observer)
    }
    
    func removeObserver(_ observer: Any) {
        if let index = observers.firstIndex(of: observer) {
            observers.remove(at: index)
        }
    }
}

struct MyView: View {
    @State private var data: String = ""
    
    var body: some View {
        Text(data)
            .onAppear {
                DispatchQueue.main.async {
                    // 执行异步任务
                }
            }
            .onDisappear {
                // 取消异步任务
            }
    }
}