codable

Should the use of class inheritance break the Decodability of class. For example, the following code class Server : Codable { var id : Int? } class Development : Server { var name : String? var userId : Int? } var json = "{\"id\" : 1,\"name\" : \"Large Building Development\"}" let jsonDecoder = JSONDecoder() let item = try jsonDecoder.decode(Development.self, from:json.data(using: .utf8)!) as Development print(item.id ?? "id is nil") print(item.name ?? "name is nil") here output is: 1 name is nil Now if I reverse this, name decodes but id does not. class Server { var id : Int? } class

Codable seems a very exciting feature. But I wonder how we can use it in Core Data? In particular, is it possible to directly encode/decode a JSON from/to a NSManagedObject? I tried a very simple example: and defined Foo myself: import CoreData @objc(Foo) public class Foo: NSManagedObject, Codable {} But when using it like this: let json = """ { "name": "foo", "bars": [{ "name": "bar1", }], [{ "name": "bar2" }] } """.data(using: .utf8)! let decoder = JSONDecoder() let foo = try! decoder.decode(Foo.self, from: json) print(foo) The compiler failed with this errror: super.init isn't called on all

I am replacing my old JSON parsing code with Swift's Codable and am running into a bit of a snag. I guess it isn't as much a Codable question as it is a DateFormatter question. Start with a struct struct JustADate: Codable { var date: Date } and a json string let json = """ { "date": "2017-06-19T18:43:19Z" } """ now lets decode let decoder = JSONDecoder() decoder.dateDecodingStrategy = .iso8601 let data = json.data(using: .utf8)! let justADate = try! decoder.decode(JustADate.self, from: data) //all good But if we change the date so that it has fractional seconds, for example: let json = """ {