ios - 错误: Use of undeclared type BindableObject

Question

我正在跟踪SwiftUI放大应用程序的本教程，在创建符合Bindable对象的最终类时遇到了此错误。
Error:Use of undeclared type 'BindableObject'

import Combine  
import SwiftUI  
import AWSAppSync  

final class TalkStore: BindableObject {
/*
    Required by SwiftUI
*/
    let didChange = PassthroughSubject<TalkStore, Never>()
    var listTalks: [ListTodosQuery.Data.ListTodo.Item] {
        didSet {
            didChange.send(self)
        }
    }

    //We will be using this later.
    private let appSyncClient: AWSAppSyncClient!

/*
    Init if running app is using SwiftUI Content View
*/
    init(talks: [ListTodosQuery.Data.ListTodo.Item]) {
        self.appSyncClient = nil
        self.listTalks = talks
    }
}

苹果有可能更改了类(class)名称吗？
我如何找到答案？

Answer 1

BindableObject已重命名为ObservableObject

BindableObject is replaced by the ObservableObject protocol from the Combine framework. (50800624)

资料来源: https://developer.apple.com/documentation/ios_ipados_release_notes/ios_13_release_notes