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kotlinlang

Hello, Can you tell me difference between interface and sealed interface, I checked the Kotlin docs but I didn't find a detailed explanation. When we should sealed interface instead normal interface? What featutes does sealed interface have?

same as the difference between `open class` and `sealed class` (`interface` defaults to `open` instead of `final` like `class` does because that wouldn't make sense)

the docs cover both `sealed class` and `sealed interface` <https://kotlinlang.org/docs/sealed-classes.html>

A sealed interface is a special type of interface that can have a limited set of implementations, and all of these implementations must be defined within the same file or a set of related files (known as a compilation unit)

```sealed interface Result

class Success : Result
class Failure : Result```

Use sealed interface, when you hit any “restrictions”, consider if changing to an interface is what you want