3 

     4 A function should do one thing, and only one thing.

     5 

     6 Make your variables immutable, unless there's a good reason not to.

     7 

     8 You can be productive on Day 1, but the language is deep, so as you go

     9 along you’ll keep learning, and finding newer, better ways to write

    10 code. Scala will change the way you think about programming (and

    11 that’s a good thing).

    12 

    13 Of all of Scala’s benefits, what I like best is that it lets you write

    14 concise, readable code

    15 

    16 

    17 

    18 ScalaTest download page: http://www.scalatest.org/download