What is the difference between Singleton and Dependency Injection?

What is the difference between Singleton and Dependency Injection?

Singleton is a design pattern that restricts a class to a single instance, while Dependency Injection is a technique to provide dependencies to a class.

Can you give me an example of when to use Singleton?

Sure! Use Singleton when you need to control access to a shared resource, like a configuration manager.

And when should I use Dependency Injection?

Use Dependency Injection when you want to improve code modularity and make unit testing easier by injecting dependencies.

Are there any downsides to using Singleton?

Yes, Singleton can introduce global state, making testing harder and leading to tight coupling in your code.

What are the benefits of Dependency Injection?

Dependency Injection promotes loose coupling, enhances testability, and improves code maintainability.