在Swift中获取已解析JSON数据的索引

编程问答 2022-08-15

问题描述

下面是我的数据结构。我正在尝试创建一个循环，以检查员工是否可以执行某些服务，但是我无法使employee.services正常工作。 JSON数据已加载到EmployeesData中。我在想我需要从EmployeesData获取索引，但是我似乎无法使用ForEach做到这一点？

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)")
}
}

解决方法

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