Hello all, I'm writing a book named I Love Ruby, and I plan to release its
another edition this December. I would like to know what feature you want
in that book. Please take this survey https://goo.gl/forms/S3sBjxTgUS7lRcri2
so that I can decide on what to do next.
You may download the book here https://mindaslab.github.io/I-Love-Ruby/