Hi there, is Kotlin in Action still up-to-date? I had done some Kotlin 3 years ago. I would like to to refresh my memory now. Has anything of importance changed in Kotlin or was added to the language since then which is not covered in Kotlin in Action. Coroutines come to mind. Are there any other gotchas? Like major stdlib changes/additions?   Thanks!

Hi, “Kotlin in Action” is a little bit dated on language and stdlib features but nonetheless still a great book, worth reading. For a list of updated books look here: https://kotlinlang.org/docs/books.html

Yes, agree with what Matteo has said. Still recommend the book. It is a very good read.