I have created a protocol as

protocol DataBaseManager{     associatedtype type     init()     func insert(object obj: [type])     func getObject(ofType type: type.Type)-> Array<type>     //...  } 

Now i have defined a RealmManager as

class RealmManager: DataBaseManager{      var realm:Realm!      required init() {         do{             realm =  try Realm()         }catch {             print(error)         }     }      func insert(object obj: [Object]) {         do {             try realm.write {                 realm.add(obj)             }         } catch let error {             print("the error in creation of object is \(error)")         }     }      func getObject(ofType type: Object.Type)-> Array<Object> {         let objects = realm.objects(type)         return Array(objects)     }     //..... } 

The whole point in doing so is to replace database later on To SqliteManager with ease if necessary. For that i am sending the dependency in my viewModel as:

  struct LoginViewModel {      var dbManager:DataBaseManager //error in this line     init(dbManager: DataBaseManager) {         //.....         self.dbManager = dbManager     } } 

and calling it as

let loginViewModel = LoginViewModel(dbManager:RealmManager()) 

But i am getting error as

Protocol ‘DataBaseManager’ can only be used as a generic constraint because it has Self or associated type requirements

Since swift doesnot support to inject protocol with associated types. What could be the possible tweak to solve this?