• Underscore's Scala books are now open source http://underscore.io/blog/posts/2017/05/29/why-we-open-sourced-our-books.html 34 comments 1/6/2017

• Underscore's books are now free and open source http://underscore.io/blog/posts/2017/05/29/why-we-open-sourced-our-books.html 10 comments 1/6/2017 scala
• All Underscore's Scala books are free and open source http://underscore.io/blog/posts/2017/05/29/why-we-open-sourced-our-books.html 9 comments 1/6/2017 java
• Underscore makes all its Scala books free and open source http://underscore.io/blog/posts/2017/05/29/why-we-open-sourced-our-books.html 24 comments 1/6/2017 programming