Localizable.swift

struct Localizable<T> {
    private let values: [LanguageCode:T]
    init(values: [LanguageCode:T]) {
        self.values = values
    }
    func value(languageCode: LanguageCode) -> T? {
        return values[languageCode]
    }
}
// Utils
extension Localizable {
    var en: T? {
        return value(languageCode: .en)
    }
    var ja: T? {
        return value(languageCode: .ja)
    }
}