scala introduction - meetup scaladores rj

SCALA INTRODUCTIONMEETUP SCALA - RJ

About me

RODRIGO LIMASoftware Engineer @Stone

Index

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

What is Scala?

Scala was created by Martin Odersky.

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.

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.

What is Scala?

May 2011, Odersky launched Typesafe Inc.

Currently named Lightbend Inc.

“ Scala is an acronym for Scalable Language ”

Is so named because it was designed to grow with the demands of its users.

What is Scala?

Programming

Imperative

Declarative

Procedural

Object Oriented

Logic

Functional

FORTRAN, C

C#, Java

Prolog

Haskell, Erlang

What is Scala?

Other functional languages

We’ve found that Scala has enabled us to deliver things

faster with less code.

Graham Tackley from TheGuardian.

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”

What is Scala?

But, anyone can use Scala?

You have to have affinity!

What is Scala?

You can create methods with symbols

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.

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

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”

Who are using Scala?

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.

How to use?

REPL (Read-Evaluate-Print-Loop);

How to use?

IDE's

- Eclipse (Scala IDE)

- NetBeans - plugin

- IntelliJ IDEA - plugin

Some features of language.

It is strongly typed (static) and type inference by the compiler;

Some features of language.

Scala.js

Scala code Scala.js Compiler JavaScript

Why use Scala?

Why use Scala? Java x Scala

What use Scala?

Scala used for create software that makes use of :

- Concurrent processing; - Parallel utilization of multiple cores;- Distributed processing.

Unlike with many traditional

functional languages,

Scala allowed us a gradual, easy

migration to a more functional

style.Rodrigo Lima, passionate about Scala.

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”

So, Why not?

Learn more about Scala

http://scaladores.herokuapp.com

QUESTIONS?

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