Basato sulla JVM Scala mette insieme OOP e Functional Programming per creare un linguaggio completo, conciso, funzionale, type safe ed estremamente versatile per qualsiasi tipo di applicazione. In questa presentazione cercheremo di addentrarci in questo linguaggio partendo da alcune delle caratteristiche sintattiche di base passando per esempi di programmazione funzionale fino ad arrivare ad esempi apparentemente incomprensibili di codice reale. Rosario Renga Lavoro tra Italia e Olanda in ambito Big Data per Vandebron, start up impegnata nel campo dell’energia rinnovabile. Ho lavorato con Java, .Net, Salesforce e tanto altro. Appassionato di tecnologie web, videogiochi e musica, passo le mie giornate tra Scala e .NET. Scrum master a tempo pieno mi piace scoprire sempre nuovi linguaggi di programmazione e capire come sfruttarli al massimo. Ho sempre cercato di condividere e accrescere le mie conoscenze, tramite blog, workshop e conferenze. Se ti va di fare quattro chiacchiere da Nerd a Nerd portami una birra e inizia a parlare :)

1. From Switzerland with love :)
Rosario Renga
Software Engineer

2. Historical notes
● The design of Scala started in 2001 at the École Polytechnique Fédérale de Lausanne by
● Scala was released publicly in early 2004 on the Java platform. A second version (v2.0) followed in
March 2006
Martin Odersky

3. Main reasons behind scala
Challenge: Achieve software side scalability avoiding concurrency and parallelism
problems

4. Main reasons behind scala
Challenge: Achieve software side scalability avoiding concurrency and parallelism
problems
● Parallel programming: Execute programs faster on a parallel hardware
○ Problem: Mutable state → Non deterministic execution
● Concurrent programming: Manage concurrent execution explicitly
○ Problem: Mutable state must be managed explicitly

5. Main reasons behind scala
Challenge: Achieve software side scalability avoiding concurrency and parallelism
problems
● Parallel programming: Execute programs faster on a parallel hardware
○ Problem: Mutable state → Non deterministic execution
● Concurrent programming: Manage concurrent execution explicitly
○ Problem: Mutable state must be managed explicitly
Solution:
● Immutability
● Functional programming
Explained by Odersky here

7. My Experience

8. My experience - The beginning
● Software Developer
● Object Oriented
● Almost zero functional programming experience
● Java and .NET world

9. My experience - The beginning

10. My experience - I saw the light in the tunnel
● Immutability
● Everything is a function
● Everything must return a value
● Think functional

11. My experience - Let’s code!
https://github.com/MeMpy/scala-playground

12. Some other features

13. Scala in the real world
Scala is Reactive

14. Scala in the real world
Scala is Big Data

15. Scala is Web development
Scala in the real world

16. Questions?

17. ● git
● Java development kit ( JDK 8 )
● Sbt ( probably optional )
● IntelliJ Idea Community Edition
● “Nu poc e genio”
What you need to run the project

18. References
● Official documentation
● Coursera Scala courses
● Scala blog for Neophyte
● Scala center
● Lightbend for scala
● .....stackoverflow

19. Thanks and happy learning