When should I use interfaces in Go?

When should I use interfaces in Go?

You should use interfaces in Go when you want to define a contract for types without specifying their implementation. This allows for greater flexibility and decoupling in your code.

Can you give me an example of using interfaces?

Sure! For instance, if you have a Shape interface with a method Area(), you can create different types like Circle and Rectangle that implement this interface. This way, you can write functions that accept any type that satisfies the Shape interface.

What are the benefits of using interfaces?

The benefits include improved code organization, easier testing, and the ability to swap implementations without changing the code that uses the interface.

Are there any downsides to using interfaces?

Yes, overusing interfaces can lead to complexity and make the code harder to understand. It's important to use them judiciously.