Cannot convert value of type '[ASValue<T>]' to expected argument type 'Binding<C>' - swift

Question

I'm building a custom component and using ForEach with a custom generic type. The issue is that this type is throwing this error:
Cannot convert value of type '[ASValue]' to expected argument type 'Binding'
public struct ArrayStepperSection<T: Hashable>: Hashable {
public let header: String
public var items: [ASValue<T>]
public init(header: String = "", items: [ASValue<T>]) {
self.header = header
self.items = items
}
}
public struct ASValue<T: Hashable>: Hashable {
private let id = UUID()
var item: T
public init(item: T) {
self.item = item
}
}
public class ArrayStepperValues<T: Hashable>: Hashable, ObservableObject {
#Published public var values: [ASValue<T>]
#Published public var selected: ASValue<T>
#Published public var sections: [ArrayStepperSection<T>]
public init(values: [ASValue<T>], selected: ASValue<T>, sections: [ArrayStepperSection<T>]? = nil) {
self.values = values
self.selected = selected
if sections != nil {
self.sections = sections!
} else {
self.sections = [ArrayStepperSection(items: values)]
}
}
public static func == (lhs: ArrayStepperValues<T>, rhs: ArrayStepperValues<T>) -> Bool {
return lhs.sections == rhs.sections
}
public func hash(into hasher: inout Hasher) {
hasher.combine(sections)
}
}
struct ArrayStepperList<T: Hashable>: View {
#Environment(\.dismiss) var dismiss
#ObservedObject var values: ArrayStepperValues<T>
let display: (T) -> String
var body: some View {
List {
ForEach(values.sections, id: \.self) { section in
Section(section.header) {
ForEach(section.items, id: \.self) { item in // Error happens here
Button(action: {
values.selected.item = item
dismiss()
}) {
HStack {
Text(display(item))
Spacer()
if values.selected.item == item {
Image(systemName: "checkmark")
}
}
}
}
}
}
}
.listStyle(InsetGroupedListStyle())
.navigationTitle(Text(display(values.selected.item)))
}
}

Answer 1

here is the test code I used to remove the error:
struct ContentView: View {
#StateObject var values = ArrayStepperValues(values: [ASValue(item: "aaa"),ASValue(item: "bbb")], selected: ASValue(item: "aaa"))
var body: some View {
ArrayStepperList(values: values) // for testing
}
}
struct ArrayStepperList<T: Hashable>: View {
#Environment(\.dismiss) var dismiss
#ObservedObject var values: ArrayStepperValues<T>
// let display: (T) -> String // for testing
var body: some View {
List {
ForEach(values.sections, id: \.self) { section in
Section(section.header) {
ForEach(section.items, id: \.self) { item in
Button(action: {
DispatchQueue.main.async {
values.selected.item = item.item // <-- here
// dismiss() // for testing
}
}) {
HStack {
Text("\(item.item as! String)") // for testing
Spacer()
if values.selected.item == item.item { // <-- here
Image(systemName: "checkmark")
}
}
}
}
}
}
}
.listStyle(InsetGroupedListStyle())
// .navigationTitle(Text(display(values.selected.item))) // for testing
}
}