在 Swift 中获取解析的 JSON 数据的索引

Posted 2023-02-24

【中文标题】在 Swift 中获取解析的 JSON 数据的索引

【英文标题】：Get Index of Parsed JSON data in Swift

【发布时间】：2020-08-20 17:50:27

【问题描述】：

以下是我的数据结构。我正在尝试创建一个循环来检查员工是否可以执行某项服务，但我无法让 employee.services 工作。 JSON 数据被加载到EmployeesData。我在想我需要从EmployeesData 获取索引，但我似乎不能用ForEach 来做？

ForEach(EmployeesData) employee in
  //This does not work
  if(employee.services[0] == "service")



struct Employees: Codable, Identifiable
  var id: UUID
  var firstname: String
  var lastname: String
  var services: [String]
  var workingStatus: String


//Store employee data in EmployeesData
let EmployeesData: [Employees] = load("Employees.json")

private func load<T: Decodable>(_ filename: String) -> T 
let data: Data

guard let file = Bundle.main.url(forResource: filename, withExtension: nil)
    else 
        fatalError("Couldn't find \(filename) in main bundle.")


do 
    data = try Data(contentsOf: file)
 catch 
    fatalError("Couldn't load \(filename) from main bundle:\n\(error)")


do 
    let decoder = JSONDecoder()
    return try decoder.decode(T.self, from: data)
 catch 
    fatalError("Couldn't parse \(filename) as \(T.self):\n\(error)")

【参考方案1】：

if let index = employee.services.firstIndex(where: $0 == "service")