ServiceLocating

ServiceLocating.swift

protocol ServiceLocating {
   func getService<T>() -> T?
}
final class ServiceLocator: ServiceLocating {
    private lazy var services: Dictionary<String, Any> = [:]
    private func typeName(some: Any) -> String {
        return (some is Any.Type) ? 
            "\(some)" : "\(some.dynamicType)"
    }

    func addService<T>(service: T) {
        let key = typeName(T)
        services[key] = service
    }

    func getService<T>() -> T? {
        let key = typeName(T)=
        return services[key] as? T
    }
    public static let shared: ServiceLocator()
}