I am looking to call two variables but the method I am trying to implement does not work.
Unfortunately, Xcode says Extra argument in call.
I am a newbie, can someone help me to understand what is going wrong ?
Thank you !!
struct Card {
let content : [String]
let names:[String]
static let allCards:[Card] =
[
Card(content: ["content1","content2"], names: ["name1","name2"]),
Card(content: ["content3","content4"], names: ["name3","name4"])
]
}
struct Play {
let cards = Card.allCards.shuffled()
var currentCardIndex = 0
var currentCard:Card {
cards[currentCardIndex]
}
}
class GameViewModel {
@Published var play = Play()
var cardContent:[String] {
play.currentCard.content
}
var cardnames:[String] {
play.currentCard.names
}
}
struct CardView:View {
let contentString:String
let nameString:String
var body: some View{
HStack{
Text(contentString)
Text(nameString)
}
}
}
struct ContentView: View {
var viewModel = GameViewModel()
var body: some View {
HStack{
/ Warning: Extra argument in call
ForEach(viewModel.cardContent, viewModel.cardnames,id:.self, content:{ card in
CardView(contentString: card, nameString: card).frame(minWidth: 135, idealWidth: 250, maxWidth: 135, minHeight: 135, idealHeight: 250, maxHeight: 135, alignment: .center).aspectRatio(2/2, contentMode:.fit)
})
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
2
Answers
The root cause:
In
ForEach(viewModel.cardContent, viewModel.cardnameseitherviewModel.cardContentorviewModel.cardnamesis an extra argument, asForEachcan iterate only one array, and you are passing 2 arrays.The simplest fix: pass only one array (
viewModel.play.cards) inThe example above still may not compile because of
CardView(contentString: cardconstructor, but that’s another problem 🙂Yes, it throws an error because you are passing more than the available arguments to constructor of
ForEachYou can see the below available constructor of
ForEach, then you come to know which argument you are passing it as extra to the constructorAnd in your code