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Learning Scala Programming

You're reading from   Learning Scala Programming Object-oriented programming meets functional reactive to create Scalable and Concurrent programs

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Product type Paperback
Published in Jan 2018
Publisher Packt
ISBN-13 9781788392822
Length 426 pages
Edition 1st Edition
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Author (1):
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Vikash Sharma Vikash Sharma
Author Profile Icon Vikash Sharma
Vikash Sharma
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Table of Contents (16) Chapters Close

1. Getting Started with Scala Programming FREE CHAPTER 2. Building Blocks of Scala 3. Shaping our Scala Program 4. Giving Meaning to Programs with Functions 5. Getting Familiar with Scala Collections 6. Object-Oriented Scala Basics 7. Next Steps in Object-Oriented Scala 8. More on Functions 9. Using Powerful Functional Constructs 10. Advanced Functional Programming 11. Working with Implicits and Exceptions 12. Introduction to Akka 13. Concurrent Programming in Scala 14. Programming with Reactive Extensions 15. Testing in Scala 16. Other Books You May Enjoy

Classes

To understand classes in Scala, let's make it clear that classes don't just do one thing for us. Classes work as a container for members in our programs, and as in any other object-oriented language, we can create instances of our class constructs and reuse them. By members we mean the variables and methods defined within. Why not take a look at a simple Scala class?

class Country(var name: String, var capital: String) 

Yes, the preceding code is a class that we defined named Country. It has two members named name and capital. Let's create a new country instance and print its values:

object CountryApp extends App { 
  val country = new Country("France", "Paris") 
  println(s"Country Name: ${country.name} and Capital: ${country.capital}") 
} 

On running the preceding code, we get the following result:

Country Name: France and...
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