Scala is a multi-paradigm programming language that runs on the Java Virtual Machine. It is designed to express common programming patterns in a concise, readable, and type-safe way. Scala smoothly integrates features of object-oriented and functional languages. Companies like Play Framework, Apache Spark, and The Guardian use Scala for building web applications, processing big data, and delivering features faster with less code. Scala code compiles to Java bytecode, allowing it to interoperate with Java libraries and take advantage of Java's large ecosystem.

1. SCALA
INTRODUCTION
MEETUP SCALA - RJ

2. About me
RODRIGO LIMA
Software Engineer @Stone

3. Index
What is Scala?
Who are using Scala?
How to use?
Some features of language.
Why use?

4. What is Scala?
Scala was created by Martin Odersky.

5. What is Scala?
In 2001 Martin Odersky began to develop a
language on the JVM.
Martin has created a language
called Pizza, worked on the
Java compiler and Java generics 5.

6. What is Scala?
Early 2004 Scala was released on the
Java platform.
In June 2004 on the .NET Framework.
The .NET support was officially
dropped in 2012.

7. What is Scala?
May 2011, Odersky
launched Typesafe Inc.
Currently named
Lightbend Inc.

8. “ Scala is an acronym for
Scalable Language ”
Is so named because it was designed to grow with the demands of its
users.

10. What is Scala?
Programming
Imperative
Declarative
Procedural
Object Oriented
Logic
Functional
FORTRAN, C
C#, Java
Prolog
Haskell, Erlang

11. What is Scala?
 Other functional languages

12. We’ve found that Scala has enabled
us to deliver things faster with less
code.
Graham Tackley from TheGuardian.
“
”

14. What is Scala?
But, anyone can use Scala?
You have to have affinity!

15. What is Scala?
You can create methods with symbols

17. What is Scala?
 Scala compiles to Byte Code in the JVM;
 I can write a .class being java or scala code;
 I can use Java libs in Scala;
 With this, we have Interoperability with Java;
 Have two paradigms, Object Oriented and Functional Programming.

18. If I were to pick a language to use
today other than Java, it would be
Scala.
James Gosling, the creator of the Java programming language
“
”

19. Who are using Scala?

20. Who are using Scala?
Play Framework to build web applications
with Java & Scala.
For building concurrent, distributed, and
resilient applications on the JVM.
Apache Spark is a fast and general engine
for big data processing.

21. How to use?
REPL (Read-Evaluate-Print-Loop);

22. How to use?
 IDE's
- Eclipse (Scala IDE)
- NetBeans - plugin
- IntelliJ IDEA - plugin

23. Some features of language.
 It is strongly typed (static) and type inference by the compiler;

24. Some features of language.
 Scala.js
Scala code Scala.js Compiler JavaScript

25. Why use Scala?

26. Why use Scala?
 Java x Scala

27. What use Scala?
Scala used for create software
that makes use of :
- Concurrent processing;
- Parallel utilization of multiple cores;
- Distributed processing.

28. Unlike with many traditional functional
languages,
Scala allowed us a gradual, easy
migration to a more functional style.
Rodrigo Lima, passionate about Scala.
“
”

29. So, Why not?

30. Learn more about Scala
http://scaladores.herokuapp.com

32. Contacts
E-mail: rodrigolimasss@gmail.com
LinkedIn: https://br.linkedin.com/in/rodrigolimasss
GitHub: https://github.com/RodrigoLimasss
Twitter: https://twitter.com/rodrigolimasss
Blog: http://rdlima.com