How to use .contains with array of Struct in SwiftUI? - arrays

Question

I'm trying to check if my appearedNames array already contains my currentPerson string but unfortunately i got this error: Cannot convert value of type 'String?' to expected argument type '(ColoredName) throws -> Bool'... how should i use .contains with a struct?
struct ColoredName: Identifiable {
let id = UUID()
var name: String
var color: Color
}
struct ContentView: View {
#State private var names = ["Steve", "Bill", "Jeff", "Elon"]
#State private var appearedNames = [ColoredName]()
#State private var currentPerson: String?
var body: some View {
NavigationView {
VStack {
NavigationLink("Change view") {
SecondView(appearedNames: $appearedNames)
}
HStack {
Button {
if currentPerson != nil && !appearedNames.contains(currentPerson) // <-- I got the error here {
appearedNames.append(ColoredName(name: currentPerson ?? "", color: .red))
}
changePerson()
} label: {
Text(currentPerson ?? "Start")
.foregroundColor(currentPerson != nil ? .red : .black)
.font(.largeTitle)
}
Button {
if currentPerson != nil {
appearedNames.append(ColoredName(name: currentPerson ?? "", color: .green))
}
changePerson()
} label: {
Text(currentPerson ?? "Start")
.foregroundColor(currentPerson != nil ? .green : .black)
.font(.largeTitle)
}
}
}
}
}
func changePerson() {
if names.count > 0 {
let index = Int.random(in: 0..<names.count)
currentPerson = names[index]
names.remove(at: index)
}
}
}
struct SecondView: View {
#Binding var appearedNames: [ColoredName]
var body: some View {
VStack {
ForEach(appearedNames) { person in
Text(person.name)
.foregroundColor(person.color)
.font(.largeTitle)
.bold()
}
}
}
}

Answer 1

try something like this, where you compare the name of the ColoredName in the array, with the String currentPerson (unwrapped):
if currentPerson != nil && !appearedNames.contains(where: { $0.name == currentPerson!} ) {
appearedNames.append(ColoredName(name: currentPerson ?? "", color: .red))
}
or, alternatively:
if let theName = currentPerson, !appearedNames.contains(where: { $0.name == theName} ) {
appearedNames.append(ColoredName(name: theName, color: .red))
}