Issue with ForEach in SwiftUI - swiftui

Question

I'm trying to create a list from an array of Request objects.
I have defined a custom view RequestRow to display a Request.
The following works to display a list of requests…
struct RequestsView : View {
let requests: [Request]
var body: some View {
List {
ForEach(0..<requests.count) { i in
RequestRow(request: self.requests[i])
}
}
}
}
but the following won't compile…
struct RequestsView : View {
let requests: [Request]
var body: some View {
List {
ForEach(requests) { request in
RequestRow(request: request)
}
}
}
}
Cannot convert value of type '(Request) -> RequestRow' to expected argument type '(_) -> _'
Any thoughts as to what the issue might be?

Answer 1

OK, I soon figured out the answer. Per the Apple's docs, the array elements must be Identifiable, so this works…
var body: some View {
List {
ForEach(requests.identified(by: \.self)) { request in
RequestRow(request: request)
}
}
}
I'm sure I won't be the last person to have this problem, so I'll leave this here for future reference.

Answer 2

I have the same problem, but in my case Component is a Protocol, so it can't be conformed to Identifiable
VStack {
ForEach(components.identified(by: \.uuid)) { value -> UIFactory in
UIFactory(component: value)
}
}
However, If I try something like this it works fine
VStack {
ForEach(components.identified(by: \.uuid)) { value -> UIFactory in
Text(value.uuid)
}
}