Error Handling Article

MainError3.swift

enum MainError: Error {
    case general
    case unknownError

    var userFriendlyDescription: String {
        "MainError.\(self)".localizeSafely(safe: "MainError.general".localized)
    }
}

extension String {

    var localized: String {
        NSLocalizedString(self, comment: "")
    }

    func localizeSafely(safe: String) -> String {
        let localizedValue = self.localized
        return localizedValue == self ? safe : localizedValue
    }
}