我想为集合中的对象建立绑定,以便可以像引用指针一样将其传递给下游。我希望这是一个方便的功能,但我遇到了一些麻烦。
如果有的话,我可以使用以下协议“Diskable”来消除我遇到的错误吗?
final class PropertiesData: ObservableObject, Diskable {
@Published var fetchedItems: [Property] = []
var location: URL {
let file = try! LocalStorage.rootFolder.createFileIfNeeded(withName: "properties.data")
return file.url
}
}
extension Diskable where T: Identifiable {
func binding(for object: T) -> Binding<T> {
let index = fetchedItems.firstIndex(where: { $0.id == object.id } )!
return $fetchedItems[index] // cannot find 'fetchedItems' in scope
}
}
protocol Diskable: AnyObject {
associatedtype T: Codable
var location: URL { get }
var fetchedItems: [T] { get set }
}