Ios design patterns and architecture

Architecture
- Design scheme in software development
- Relationships between classes, between modules, between clients and servers
Structural nouns often heard
- MVC, MVP, MVVM, VIPER, CDD
- Three-tier architecture, four-tier architecture
- .

Model-View-Controller
- Advantages: View and Model can be reused and used independently
- Cons: Controller code is too bloated

Model-View-Controller
- Advantages: Thin Controller, encapsulate the details inside the View, the outside world does not know the specific implementation inside the View
- Cons: View depends on Model

Model-View-Presenter

The demo address

Design Pattern
- Is a set of repeatedly used, code design experience summary
- The benefits of using design patterns include reusing code, making it easier for others to understand, and ensuring code reliability
- Generally has nothing to do with programming language, is a set of relatively mature programming ideas
Design patterns fall into three broad categories
- Creation pattern: Pattern of object instantiation, used to decouple the object instantiation process
  - Singleton pattern, factory method pattern, and so on
- Structural pattern: Groups classes or objects together to form a larger structure
  - Proxy pattern, adapter pattern, composite pattern, decorator pattern, and so on
- Behavioral patterns: How do classes or objects interact and divide responsibilities and algorithms
  - Observer mode, command mode, chain of responsibility mode, and so on

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