Using Fatal Errors to Add Clarity and Elegance to Swift - 3

using-fatal-errors-to-add-clarity-and-elegance-to-swift-3.swift

import Foundation

enum Section: Int {

    case news
    case profile
    case settings

    var title: String {
        switch self {
        case .news: return NSLocalizedString("section_news", comment: "news")
        case .profile: return NSLocalizedString("section_profile", comment: "profile")
        case .settings: return NSLocalizedString("section_settings", comment: "settings")
        }
    }

}

struct SettingsViewViewModel {

    func title(for section: Int) -> String {
        guard let section = Section(rawValue: section) else { fatalError("Unexpected Section") }
        return section.title
    }

}