Ans: In Memento Pattern, your data gets stored somewhere. Following this, the externalized state can be reestablished without disturbing encapsulation that makes sure that the private data remains secure. It is a behavioral design pattern that permits the user to create snapshots of an object’s state that can be restored later.
With the object it is working with, Memento will never compromise on the internal structure and the data that is present inside the snapshot. In other words, they are similar to checkpoints that can be stored and restored in the future.
Ans: MVC id the short form for Model-View-Controller. This method is used by Apple to design apps for their platforms. That’s why a majority of developers use this approach on Apple platforms. In MVC, every part of your code is one of three things that are mentioned below.
Models: work on the domain data or a data access layer that manipulates the data. Additionally, models are responsible for storing your data.
Views: is in charge of the presentation layer (GUI). They offer data for users. For example, a table that displays a list of products that are available.
Controller/Presenter/ViewModel: Controllers are the combination of the two, by requesting to access data from a database to manipulate it or retrieve it with the model. And, converting its data in a way that can be shown by views.
Ans: Model–view–view model is again a software architectural pattern. This ensures the segregation of the development of the graphical user interface that can be through a markup language or the GUI code. The view is independent of any specific model platform. UIKit is the representation of the view and its state that is independent. The View Model brings about changes in the Model and gets updated by itself with the updated Model.
The view model takes in the model, so it has the ability to format the information that’s is supposed to be shown on the view.
Ans: There are numerous benefits of swift. Thus, it is extensively used.