I already have a default clause but if i dont call the function from within a button it doesnt compile Picker("Drogas", selection: $drgpick, content: {           ForEach(opcdrg, id: \.self, content: { opcdrg in             Text(opcdrg)           })         })         switch drgpick {         case "Remifentanilo 5 mg en 250 ml" :         Button ("\(drgpick)") {           remi5en250()         }         case "Remifentanilo 2.5 mg en 250 ml" :         Button ("\(drgpick)") {           remi25en250()         }         case "Noradrenalina 4 mg en 250 ml" :         Button ("\(drgpick)") {           nora4en250()         }         case "Noradrenalina 8 mg en 250 ml" :         Button ("\(drgpick)") {           nora8en250()         }         case "Noradrenalina 20 mg en 250 ml" :         Button ("\(drgpick)") {           nora20en250()         }         case "Dexmedetomidina 200 mcg en 100 ml" :         Button ("\(drgpick)") {           dex200en100()         }         case "Dexmedetomidina 200 mcg en 50 ml" :         Button ("\(drgpick)") {           dex200en50()         }         case "Milrinona 20 mg en 250 ml" :         Button ("\(drgpick)") {           milri20en250()         }         case "Adrenalina 4 mg en 250 ml" :         Button ("\(drgpick)") {           adre4en250()         }         default : Text ("nada")         }

How do i submit the complete code? It tells me that i went over the maximun numbers of characters

switch drgpick {         case "Remifentanilo 5 mg en 250 ml" :         //Button ("\(drgpick)") {           remi5en250()         //}         case "Remifentanilo 2.5 mg en 250 ml" :         Button ("\(drgpick)") {           remi25en250()         }         case "Noradrenalina 4 mg en 250 ml" :         Button ("\(drgpick)") {           nora4en250()         }         case "Noradrenalina 8 mg en 250 ml" : this are the errors i get Type '()' cannot conform to 'View' Only concrete types such as structs, enums and classes can conform to protocols Requirement from conditional conformance of '_ConditionalContent<(), Button>' to 'View'

this is the navigation link NavigationLink("", isActive: $isShowingResultView) { ResultView() }         Button("alteracion"){           diag()           calcular()           isShowingResultView = true         }

as you said, on my first screen I enter this three values viewModel.npH = viewModel.npCO2 = viewModel.nHCO3 = when I first press the button It navigates to the second screen and prints 1 2 6 and it stops I back up to my first screen and when I press it again, it correctly checks all the conditional and prints 1 2 6 9

here is the print i get

else if viewModel.npH > 7.45 && diagnos.resultado3 == "alcalosis metabólica" && (viewModel.expectALCPCO2 + 0.5) < viewModel.npCO2 || viewModel.npCO2 > 55 {         diagnos.resultado4 = "acidosis respiratoria asociada" //        diagnos.resultado2 = ""         diagnos.valorasociado1 = "PCO2 esperada: \(viewModel.expectALCPCO2)"         print ("8.2" , viewModel.npH)       } it printed 8.2 7.099999904632568 even though nph = 7.0999 it executed the closure

Problem solved. Was missing a parenthesis so it was executing the closure due to the || part of the statement

Thanks a lot Zimmie!!!!!

Thanks Claude31 Below is the whole code of the two views I have so far I tried your suggestion but i didn't get what i need, so i commented it out when i changed the code i couldn't select any row My objective is to be able to create instances of the DRUG struct in addView that are added to my favorites list in favView, I managed that so far. My next goal is to be able to select a row from my favorite list and be able to use that specific instance of the struct in another place import SwiftUI struct Drug: Identifiable, Codable, Hashable {   var id = UUID()   var name: String   var amount: String   var unitamount : String   var bag: String     var isRead: Bool = false }  class Favoritos: ObservableObject {  @Published var favs = [Drug]() {    didSet {      if let encoded = try? JSONEncoder().encode(favs) {        UserDefaults.standard.set(encoded, forKey: "Favs")      }    }  }    init() {      if let savedItems = UserDefaults.standard.data(forKey: "Favs") {        if let decodedItems = try? JSONDecoder().decode([Drug].self, from: savedItems) {         favs = decodedItems          return        }      }      favs = []    } } struct FavListView: View {   @StateObject var favoritos = Favoritos() //  @State var newdrug = Drug(name: "", amount: "", bag: "")   @State private var showingAddView = false   func removeItems(at offsets: IndexSet) {     favoritos.favs.remove(atOffsets: offsets)   }   @State private var selection: String?   var body: some View {           NavigationView {       VStack{ //        List { //          TextField ("Droga", text: $newdrug.name) //          TextField ("Cantidad", text: $newdrug.amount) //          TextField ("Volumen", text: $newdrug.bag) //        }      //        List(favoritos.favs, id: \.self, selection: $selection) { drug in //             Text("\(drug.name) \(drug.amount) \(drug.unitamount) en \(drug.bag)") //              } //        .toolbar { //          EditButton() //        }                   List         { ForEach(favoritos.favs) { drug in           Text("\(drug.name) \(drug.amount) \(drug.unitamount) en \(drug.bag)")         }.onDelete(perform: removeItems)         }.navigationTitle("Infusiones favoritas")           .navigationBarTitleDisplayMode(.inline)           .accentColor(.black)           .toolbar {             EditButton()           }                   Button ("agregar nuevo favorito") {showingAddView = true }         //        Button ("Add") { //        favoritos.favs.insert(Drug(name: newdrug.name, amount: newdrug.amount, bag: newdrug.bag), at: 0) // // //                }                 }.sheet(isPresented: $showingAddView) {         AddView(favoritos: favoritos)             }     }         }           struct FavListView_Previews: PreviewProvider {       static var previews: some View {         FavListView()       }     }   } import SwiftUI struct AddView: View {   @ObservedObject var favoritos : Favoritos   @State var newdrug = Drug(name: "", amount: "", unitamount: "", bag: "")       var body: some View {     VStack{       List {         TextField ("Droga", text: $newdrug.name)           .disableAutocorrection(/*@START_MENU_TOKEN@*/true/*@END_MENU_TOKEN@*/)         TextField ("Cantidad", text: $newdrug.amount)         TextField ("Unidad", text: $newdrug.unitamount)           .autocapitalization(/*@START_MENU_TOKEN@*/.none/*@END_MENU_TOKEN@*/)         TextField ("Volumen", text: $newdrug.bag)       }                                }                       Button ("Add") {         favoritos.favs.insert(Drug(name: newdrug.name, amount: newdrug.amount, unitamount: newdrug.unitamount, bag: newdrug.bag), at: 0)                                  }             }   } struct AddView_Previews: PreviewProvider {   static var previews: some View {     AddView(favoritos : Favoritos())   } }

Any Help? I dont understand why i cant select a row