如何在Swift中迭代特定的JSON项

import Foundation

// 定义JSON数据结构
struct MyData: Codable {
    let name: String
    let age: Int
    let email: String
}

// JSON数据
let jsonString = """
{
    "name": "John",
    "age": 25,
    "email": "john@example.com"
}
"""

// 解码JSON数据
let jsonData = jsonString.data(using: .utf8)!
let decoder = JSONDecoder()
do {
    let myData = try decoder.decode(MyData.self, from: jsonData)
    
    // 迭代特定的JSON项
    print("Name: \(myData.name)")
    print("Age: \(myData.age)")
    print("Email: \(myData.email)")
} catch {
    print("Error decoding JSON: \(error)")
}