Decode string or int value in structure will return string("1") in Swift 4 - swift

Question

I have a structure that some of the values will get Integer or string so I used this structure in my structure to parse JSON in the correct way but the problem is that when I want to print the value it will print string("1") instead of 1.
public struct player1_result_sheet : Decodable {
let ans_1 : QuantumValue?
let ans_2 : QuantumValue?
let ans_3 : QuantumValue?
let ans_4 : QuantumValue?
}
enum QuantumValue: Decodable {
case int(Int), string(String)
init(from decoder: Decoder) throws {
if let int = try? decoder.singleValueContainer().decode(Int.self) {
self = .int(int)
return
}
if let string = try? decoder.singleValueContainer().decode(String.self) {
self = .string(string)
return
}
throw QuantumError.missingValue
}
enum QuantumError:Error {
case missingValue
}
}
Here is the printing after decode:
(self.res?.response?.detailData?[indexPath.row].player1_result_sheet?.ans_1!)!

Answer 1

If you want to print the value without the enum wrapper, just implement description:
extension QuantumValue: CustomStringConvertible {
public var description: String {
switch self {
case let .string(string):
return string
case let .int(number):
return "\(number)"
}
}
}

Answer 2

Your enum case is string(String) so it prints case(value)
string("1")
You can solve it by creating varible inside enum which returns you a value depends on case of QuantumValue
var value: Any {
switch self {
case .int(let value):
return value
case .string(let value):
return value
}
}
then you can use it like this:
...ans_1!.value)!
1
Also note that type of value is Any so if you want to work with it as String, you have to downcast it
if let string = ...ans_1.value)! as? String {
...
}

Answer 3

QuantumValue is declared as enum, both good cases have associated values.
So printing a value prints both, the case and the associated value.
You could add two properties intValue and stringValue inside QuantumValue
var intValue : Int? {
guard case .int(let num) = self else { return nil }
return num
}
var stringValue : String? {
guard case .string(let string) = self else { return nil }
return string
}
Then you can print
player1_result_sheet?.ans_1?.intValue
By the way the name player1_result_sheet is pretty php-ish.
Please conform to the naming convention.
Structs, classes and enums are UpperCamelCased → Player1ResultSheet
Variables and functions are lowerCamelCased → ans1
And please consolidate your optionals, 6 (six) question and exclamation marks in one line is pretty weird
(self.res?.response?.detailData?[indexPath.row].player1_result_sheet?.ans_1!)!