SwiftUI:自定义容器_swiftui 自定义属性

struct ContentView: View {
    var body: some View {
        GStack(rows: 4, cols: 4) { row, col in
            HStack {
                Image(systemName: "\(row*4+col).circle")
                Text("R\(row) C\(col)")
            }
            
        }
    }
}

struct GStack<Content:View>:View {
    let rows: Int
    let cols: Int
    let content: (Int, Int) -> Content
    
    var body: some View {
        VStack {
            ForEach(0..<rows) { row in
                HStack {
                    ForEach(0..<cols) { column in
                        content(row, column)
                    }
                }
            }
        }
    }
}
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