encodable

I have built a set of API functions which encode an object (using a Struct which conforms to Codable ), then Posts the resulting JSON Data object to a server, then decodes the JSON response. All works fine - especially happy with the new method for JSON parsing in Swift 4.2. However, now I want to refactor the code so that I can reuse the code for various method calls - when I do I get a really annoying error. func encodeRequestJSON(apiRequestObject: Codable) -> Data { do { let encoder = JSONEncoder() let jsonData = try encoder.encode(apiRequestObject) let jsonString = String(data: jsonData,

I'm trying to get data by encode model which conforms to Encodable protocol. But it's failed to invoke func encode like code below: // MARK: - Demo2 class TestClass2: NSObject, Encodable { var x = 1 var y = 2 } var dataSource2: Encodable? dataSource2 = TestClass2() // error: `Cannot invoke 'encode' with an argument list of type '(Encodable)'` let _ = try JSONEncoder().encode(dataSource2!) //func encode<T>(_ value: T) throws -> Data where T : Encodable But in another demo, it works well, why? // MARK: - Demo1 protocol TestProtocol { func test() } class TestClass1: NSObject, TestProtocol { func

I'm currently working with Codable types in my project and facing an issue. struct Person: Codable { var id: Any } id in the above code could be either a String or an Int . This is the reason id is of type Any . I know that Any is not Codable . What I need to know is how can I make it work. Codable needs to know the type to cast to. Firstly I would try to address the issue of not knowing the type, see if you can fix that and make it simpler. Otherwise the only way I can think of solving your issue currently is to use generics like below. struct Person<T> { var id: T var name: String } let