How to increment variable in forea… | Apple Developer Forums

How to increment variable in foreach loop

Hello people,
for start sorry for my bad english, I'm french

Someone can help for this :

Code Block struct requestFetch: View {  @State private var somme: Double = 0
  @Environment(\.managedObjectContext) var managedObjectContext
  @FetchRequest(
    entity: Notes.entity(),
    sortDescriptors: [NSSortDescriptor(keyPath: \Notes.matiere, ascending: true)],
    predicate: NSPredicate(format: "matiere == %@", "Mathématique")
  )
  var note: FetchedResults<Notes>
   
  var body: some View {
    List(note) { not in
      somme = somme + not.note
      Text("\(not.matiere!)")
    }
    Text("ok \(note.count)")
  }
}

Code Block struct requestFetch: View {
@State private var somme: Double = 0
@Environment(\.managedObjectContext) var managedObjectContext
@FetchRequest(
entity: Notes.entity(),
sortDescriptors: [NSSortDescriptor(keyPath: \Notes.matiere, ascending: true)],
predicate: NSPredicate(format: "matiere == %@", "Mathématique")
)
var note: FetchedResults<Notes>

var body: some View {
List(note) { not in
somme = somme + not.note
Text("\(not.matiere!)")
}
Text("ok \(note.count)")
}
}

This code doesn't work and I really need help
It's somme = somme + not.note which don't work.

Thanks for your help :)