iOS getVersion() Swift

gistfile1.txt

func getVersion() -> String {
    // if this doesn't unwrap, something is really wrong
    guard let dictionary = Bundle.main.infoDictionary else {
        preconditionFailure("Error: main bundle not found!")
    }
    let version = dictionary["CFBundleShortVersionString"] ?? "error"
#if DEBUG // Get build number, if you want it. Cleaner to leave out of release version.
    let build = dictionary["CFBundleVersion"] ?? "error"
    // the version+build format is recommended by https://semver.org
    let versionBuild = "\(version)+\(build)"
    return versionBuild
#else
    return version
#endif
}