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@State について

Posted at

SwiftUIを使いはじめて戸惑ったのが@Stateであった。
備忘録として@Stateを使ったコードを残す。

import SwiftUI

struct state: View {
    @State var text = 1
    var body: some View {
        VStack {
            Button("button", action: {
                self.text += 1
                print("a")
            })
        
        Text("\(text)")
        }
    }
}

struct state_Previews: PreviewProvider {
    static var previews: some View {
        state()
    }
}

@Stateをつけることで変数の変更が可能になる。

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