Scala by example this unpublished book feels good.

YesScalaWritten by Martin. It seems that it has not been officially published. I have read the list of chapter 9, which is very beneficial. The list is the key to the function language, and the list is constructed by two basic operations, nil and:, which respectively indicate empty tables and connections. The list contains three basic methods: Head, tail, and isempty. After induction, do you feel much simpler and clearer. The basic functions of function programming are pattern recognition, pattern matching, and Pattern description. This requires experience and creativity in this area.   Yesterday I started to toss this Scala language, mainly considering the practicality of looking for a job. I still have a good impression on this language. Count on your fingers. This is the first language to learn. Almost 10 languages have been used. I don't know who will be next.   There is a good advertisement word, Scala is a mix of blood, learning from the advantages of Java, Ruby and Haskell.