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What is SOLID? Can you elaborate on each SOLID acronym? سهل
A set of 5 object-oriented design principles:
| Acronym | Principle | Meaning (simple) |
|---|---|---|
| S | Single Responsibility Principle | A class should have only one reason to change. |
| O | Open/Closed Principle | Open for extension, closed for modification. |
| L | Liskov Substitution Principle | Subclasses should be substitutable for base classes. |
| I | Interface Segregation Principle | Many small, specific interfaces are better than one large one. |
| D | Dependency Inversion Principle | Depend on abstractions, not on concrete implementations. |
Name design patterns and principles you know and how they are utilized in .NET Framework. سهل
- Creational Patterns:
- Singleton: IConfiguration or IHttpClientFactory as singleton in DI.
- Factory: DbContextFactory creates EF Core contexts.
- Structural Patterns:
- Adapter: Wrapping a third-party API in your own interface.
- Decorator: Adding behavior to services without changing them (middleware).
- Behavioral Patterns:
- Strategy: PasswordHasher implementations or ILoggerProvider.
- Command: MediatR library in .NET implements Command pattern for CQRS.
- Principles:
- SOLID, DRY, KISS, YAGNI