CODEWITHSUNDEEP
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Ennabah
Ennabah

Reputation: 2513

Pass Int to enum and return a String

I'm trying to accomplish a task which is passing an integer value to enum, and return a specific String for the passed in integrer.

I'm using enum because the integers are known and each of them has a meaning. I have done the following: 

enum Genre: String {
    case 28 = "Action"
    case 12 = "Adventure"
    case 16 = "Animation"
    case 35 = "Comedy"
    case 80 = "Crime"
}

What I'm expecting: when passing one of the cases, I want to return the String association.

Please, if you have a question or need any further into, ask it in the comment.

Upvotes: 1

Views: 500

Answers (4)

Mo Abdul-Hameed
Mo Abdul-Hameed

Reputation: 6110

I suggest creating a dictionary that achieves the mapping you need, and creating constants for your keys to use them.

You can start by creating a class called Constants and putting the following constants in it:

static let action = 28
static let adventure = 12
// ... The rest of your constants.

// Then create a dictionary that contains the values:
static let genre = [action : "Action", adventure : "Adventure"] // And so on for the rest of your keys.

Then you could access any value you need using that dictionary like so:

let actionString = Constants.genre[Constants.action]

Hope this helps.

Upvotes: 1

D4ttatraya
D4ttatraya

Reputation: 3404

We can not have Int as an enum case name.
Try this:

enum Genre: Int {
case action = 28, adventure = 12, animation = 16, comedy = 35, crime = 80

  func getString() -> String {
    switch self {
    case .action: return "Action"
    case .adventure: return "Adventure"
    case .animation: return "Animation"
    case .comedy: return "Comedy"
    case .crime: return "Crime"
    }
  }
}

let gener = Genre.action
print(gener.getString())//"Action"

And if you only know integer value, do this:

let gener1 = Genre(rawValue: 12)!
print(gener1.getString())//"Adventure"

Upvotes: 2

wanchen
wanchen

Reputation: 33

let Genre = [28:"action",
12: "adventure",
16: "animation",
35: "comedy",
80: "crime"]

Example use:
let retValue = Genre[28]//"action"

Here is playground demo:

enter image description here

Upvotes: 1

Bilal
Bilal

Reputation: 19156

How about this 

enum Genre: Int {
    case action = 28
    case adventure = 12
    case animation = 16
    case comedy = 35
    case crime = 80
}

And use it like this 

// enum as string 
let enumName = "\(Genre.action)" // `action`

// enum as int value 
let enumValue = Genre.action.rawValue // 28

// enum from int
let action = Genre.init(rawValue: 28)

Hope it helps. Thanks.

Upvotes: 2

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