Question 130429 in Xcode Question posted in
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Xcode – how to create a property that counts every letter in every word in an array

I have a @State private var usedWords = String

this array store the history of words that are used in the game

I have a property that counts the letters of every single letter in each word from the above array by using .count

I want to create a new variable that counts every letter in all the words in the above array

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3

Answers


  1. 0

    You should look into the array instance method reduce. Example:

    let names = ["Jessica", "Nick", "Layla", "Elanor"]
let count = names.reduce(0) { $0 + $1.count }
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  2. 0

    If you have state property your solution mb like this:

    struct SomeView: View {
    @State var usedWords = [String]()
        
    var lettersCount: Int {
        usedWords.reduce(0) { $0 + $1.count }
    }

    ...
}

    Every change of usedWords property will trigger view redraw and recalculation of lettersCount computed property, thats why view will always use actual value of lettersCount.
    Letters counting was used from JLM answer.

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  3. 0

    You can do the following:

    usedWords.joined(separator: "").count

    Complete example:

    struct SomeView: View {
   @State var usedWords = [String]()

  var body: some View {
     VStack {
        Text("(usedWords.joined(separator: "").count)")
        Button {
            let words = ["Swift", "Objective C", "Kotlin", "Java", "Javascript", "Dart"]
            usedWords.append(words[Int.random(in: 0..<words.count)])
        } label: {
            Text("Add Word")
        }
    }
}

    }

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