Play data development with Scala and Spark

dear community,

I am writing the book “play data development with scala and spark”.
It’s a open source book under Apache 2.0 license.
I have finished a big chunk about Scala.
It is focused on data development subject, not a general introduction to Scala.
Can you give the thoughts?

(oh sorry the language is Chinese only which is my native language).


I have finished this book and updated the URL. for now you can read my first book online. :slight_smile:

if you have found any error please let me know. Thanks for the help.