Do You Do Experiments?

I'm doing small applications for myself and my colleagues recently. There is a project I think it might not be stable right now, but I'm learning things using flashcards in an application called ANI key. The first three books are based on my regular Kotlin workshop. It is currently on review and covers all the essential Kotlin topics. Then there is functional Kotlin that was released recently,. That cover all the functional features of Kotlin plus essentials of Arrow by guest authors. Advanced Kotlin goes way beyond the regular workshop to explain some advanced topics like annotation processing in Kotlin. And also he will have some guest authors who will describe some advanced topics such as Kotlin JS, Kot