Single responsibility principle

The single responsibility principle (SRP) is one of the five SOLID design principles that can help you write clean, maintainable, and testable code. It states that every element should have one and only one reason to change. In other words, each component should have a single, well-defined, and cohesive responsibility. One of the benefits of applying the SRP is that it makes your code easier to understand.

By having a single responsibility for each component, you can avoid confusion, ambiguity, and complexity. You can also name your components more clearly and consistently, which improves readability and communication.

Another benefit of applying the SRP is that it makes your code easier to test. By having a single responsibility for each component, you can write more focused, independent, and reliable tests. You can also use mocks, stubs, or fakes to simulate the dependencies of your components, which simplifies the test setup and teardown. A final benefit of applying the SRP is that it makes your code easier to reuse.

By having a single responsibility for each component, you can increase the cohesion and decrease the coupling of your code. Cohesion means that the elements of a component are strongly related and work together to achieve a single purpose. Coupling means that the degree of interdependence between components is low and they can function independently. High cohesion and low coupling make your code more modular, flexible, and adaptable.