CodeWithSwift

An architecture pattern, also known as a software architecture pattern, is a reusable solution to a commonly occurring problem in software design. It provides a predefined structure, guidelines, and best practices for organizing and building software systems. Architecture patterns help developers create scalable, maintainable, and modular applications by promoting separation of concerns, modularity, and reusability.

In iOS development, several architecture patterns are commonly used to structure and organize code in a scalable, maintainable, and modular way. Here are some popular architecture patterns used in iOS development:

In this tutorial we will discuss the commonly used patterns M.V.C, MV.V.M and V.I.P.E.R

1.MVC (Model-View-Controller):

1. Model:
   • The Model represents the data and business logic of the application.
   • It encapsulates the application’s domain-specific data and behavior.
   • The Model is responsible for managing data, performing computations, and enforcing business rules.
   • It is independent of the user interface and does not directly interact with the View.
2. View:
   • The View represents the user interface components of the application.
   • It displays data from the Model to the user and receives user input.
   • The View is passive and does not contain any business logic.
   • It observes changes in the Model and updates its presentation accordingly.
3. Controller:
   • The Controller acts as an intermediary between the Model and the View.
   • It receives user input from the View, processes it, and interacts with the Model to perform business logic.

Drawbacks of MVC

1. Massive View Controllers: In MVC, view controllers often become bloated with responsibilities because they handle both user interface logic and business logic. As the application grows, view controllers can become difficult to maintain and test.
2. Tight Coupling: MVC can lead to tight coupling between the Model, View, and Controller components. Changes in one component may require modifications in others, making the codebase less flexible and more prone to errors.
3. Limited Reusability: Components in MVC are often tightly coupled, making it challenging to reuse them in different parts of the application or in other projects. This lack of reusability can lead to code duplication and increased development time.
4. Difficulty in Testing: Testing individual components in MVC, especially view controllers, can be challenging due to their tight coupling with other components. Unit testing becomes difficult, leading to a reliance on manual testing, which is time-consuming and error-prone.