What are some common mistakes when using interfaces in Go?

What are some common mistakes when using interfaces in Go?

Some common mistakes include not using interfaces effectively, misunderstanding nil interfaces, and failing to implement methods correctly.

Can you explain what you mean by misunderstanding nil interfaces?

Sure! A nil interface can hold a nil value, but if you try to call a method on it, it will panic. It's important to check if the interface is nil before using it.

What about method sets? What mistakes do people make there?

A common mistake is assuming that a method set includes all methods of a type. In Go, only methods with the receiver type are included in the method set.

How can I avoid these mistakes?

To avoid these mistakes, always check for nil before using interfaces, understand method sets, and practice implementing interfaces in your code.