How to get enum from raw value in Swift?

Question

I\'m trying to get enum type from raw value:

enum TestEnum: String {
    case Name
    case Gender
    case Birth

    var rawValue: String {
        switch          


        

Answer 1

With Swift 4.2 and CaseIterable protocol it is not that hard at all!

Here is an example of how to implement it.

import UIKit

private enum DataType: String, CaseIterable {
    case someDataOne = "an_awesome_string_one"
    case someDataTwo = "an_awesome_string_two"
    case someDataThree = "an_awesome_string_three"
    case someDataFour = "an_awesome_string_four"

    func localizedString() -> String {
        // Internal operation
        // I have a String extension which returns its localized version
        return self.rawValue.localized
    }

    static func fromLocalizedString(localizedString: String) -> DataType? {
        for type in DataType.allCases {
            if type.localizedString() == localizedString {
                return type
            }
        }
        return nil
    }

}

// USAGE EXAMPLE
override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    if let dataType = DataType.fromLocalizedString(localizedString: self.title) {
        loadUserData(type: dataType)
    }
}

You can easily modify it to return the DataType based on the rawValue. I hope it helps!