Functional design patterns [closed]

My suggestion is, if you want to learn Scala, to read the book from Paul Chiusano and Runar Bjarnason:

http://manning.com/bjarnason/

Part II: Functional design and combinator libraries

6. Making little languages
7. JSON serialization
8. Specification-based testing
9. Parsers
10. Purely functional parallelism
11. Purely functional state

Part III: Functional design patterns

1. The case for abstraction
2. Monoids
3. Functors
4. Monads
5. Applicative functors
6. Traversable and foldable data structures
7. Comonads

Part IV: Breaking the rules: effects and I/O

1. Effects vs. side-effects
2. Stream processing and incremental I/O
3. Enforcing effect-scoping with the type system