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kotlinlang

What are 1 or 2 great books on general Kotlin programming, idioms, and best practices? Bonus if it covers coroutines.
I've seen the list on the Kotlin website but I'm looking for a rec before I buy.

Kotlin In Action is the must read. Currently I am ready the new Effective Kotlin book which is also good so far.

somone linked me the kotlin cookbook, the first half is not bad for beginners to start and reference for later

i think for coroutines someone could write at least 3 books worth.. and still nobody truly gets it.. and it seems to keep changing

Kotlin In Action is excellent, especialy if you are a java developer who want to use Kotlin. But it's for Kotlin 1.0 with some word on 1.1, so no coroutines. But it's a must have for all other concepts, idioms, etc...

"You can solve the tasks right inside IntelliJ IDEA or Android Studio by installing the EduTools plugin and choosing Kotlin Koans course."

Any thoughts on how _Joy of Kotlin_ compares to _Kotlin in Action_?

I’ve read the first 7 chapters of _Joy of Kotlin_ and found it *awful*! So I abandoned it…and I even bought the digital copy!
It’s actually about functional programming in Kotlin (not evident at all from the cover, description and index, so you can get a bad surprise), but it’s so badly written and confusing that I don’t know how anyone could learn FP from it! Let alone good :kotlin:  style: the examples mix functions and classes in a terrible way, and the excercises constantly interrupt a chapter’s flow! Thank Turing that I alredy knew FP from other books or it would have made me conclude that the argument sucks. The topics seem interesting from a first glance at the index, but they’re developed very badly. I intend to pick up the book again from chapter 10 someday, but first I want to read other better books. Don’t waste your time with it.