SwiftUI List initializer with identified(by:)

问题

I'm working through Apple's SwiftUI tutorial on building lists and navigation, and I can't seem to find any documentation for this List initializer, or the identified(by:) method of the Array type:

struct LandmarkList: View {
    var body: some View {
        List(landmarkData.identified(by: \.id)) { landmark in

        }
    }
}

When I right-click on the List initializer and click Jump to Definition in Xcode, it takes me to this initializer which isn't right. When I do the same for the identified(by:) method, it takes me to this strange file, which only has 13 lines and no mention of the identified(by:) method:

I know Xcode is in beta, but where can I find the documentation for these mysterious bits of code? The tutorial has been great up to this point, but I'm not certain what this List and Array are doing.

回答1:

identified is no more in use now. You may try below syntax.

List{
    ForEach(landmarkData, id: \.id) { landmark in
       Text(landmark.placeName)
    }
}

来源：https://stackoverflow.com/questions/57020555/swiftui-list-initializer-with-identifiedby