Enum, Struct + Switch -> change enum value in a Struct using switch as method?

Question

Hi guys, i am really excited about this swift course, i am at the enums and structs part, and i wanted to test my self and taking as a starting point the "TO-DO" task given i tried to go a little further. What i wanted to accomplish is to create a method that will switch to the next Status (enum) So, it should be something like this newTask.status // Pending newTask.nextStatus() // Pending -> Process newTask.status // Process

So far, it works, but my method is not replacing the old status with the new one, it just says the new status while i run it thru the method, but i am not being able to store that new value in my variable.

Here´s my code

enum Status{
    case Pending, Process, Completed

    init(){
    self = .Pending
    }

}


struct Task{
    var description: String
    var status = Status()

    init(description: String){
    self.description = description

    }
    func taskStatus() -> String{
        return "Your task: \(self.description) is \(self.status)"

    }


    func nextStatus() -> Status{

        switch Status() {
        case .Pending:
            return .Process
        case .Process:
            return .Completed
        default:
            return .Pending
        }
    }


}
var newTask = Task(description: "Buy food")
newTask.status // Pending
newTask.nextStatus() // Process
newTask.status // Peding

I would really appreciate hints or help here Sorry for my english, I hope i made my self clear!

Thanks in advance!

Answer 1 · 2015-11-21T00:11:19Z

November 21, 2015 12:11am

Well, i´ve been playing around and also kept moving with the following course about Classes, and found out the solution to my problem. I turned my struct into a class, and my method instead of returning a value, i just set it to modify the stored data

Here is the code in case someone finds it useful!

enum Status{
    case Pending, Process, Completed

    init(){
    self = .Pending
    }

}


class Task{
    var description: String
    var status = Status()

    init(description: String){
    self.description = description

    }
    func taskStatus() -> String{
        return "Your task: \(self.description) is \(self.status)"

    }



    func nextStatus(){
        print("Switching status...")
        switch Status() {
        case .Pending:
            status = .Process
        case .Process:
            status = .Completed
        default:
            status = .Pending
        }
    }


}
var newTask = Task(description: "Buy Food")

newTask.status // Pending
newTask.nextStatus() // Pending -> Process
newTask.status // Process

I am not sure if it is the best way to do it, and would be very happy is someone want to send a tip, or correct my approach!

Thanks

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Pedro Laplaza

Pedro Laplaza

Enum, Struct + Switch -> change enum value in a Struct using switch as method?

1 Answer

Pedro Laplaza

Pedro Laplaza