Kotlin Programming Cookbook Repository: https://gitlab.com/users/aanandshekharroy/projects

These are the repositories within his projects:

https://gitlab.com/aanandshekharroy/Anko-examples 
https://gitlab.com/aanandshekharroy/kotlin-webservices/ 
https://gitlab.com/aanandshekharroy/kotlin-cookbook



Some codes in the book are self-explanatory and can be tested by merely copy-pasting into the IDE.


Some of the codes are hosted on Gitlab and the link to them are mentioned in the "Getting ready" section of the recipe.


If you face any problem in code, or recipe, feel free to contact the author at aanandshekharroy[at]gmail[dot]com