如何在SwiftUI中定义函数的默认空输入内容？

@State private var inputValue = ""

TextField("请输入内容", text: $inputValue)

func processInput(input: String = inputValue) {
    // 处理输入
    print("输入内容为: \(input)")
}

import SwiftUI

struct ContentView: View {
    @State private var inputValue = ""
    
    var body: some View {
        VStack {
            TextField("请输入内容", text: $inputValue)
                .padding()
            
            Button(action: {
                processInput()
            }) {
                Text("处理输入")
            }
        }
    }
    
    func processInput(input: String = inputValue) {
        // 处理输入
        print("输入内容为: \(input)")
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}