Scala code and the Scala interpreter
Introduction to Scala
David Venturi
Curriculum Manager, DataCamp
What is Scala?
Scala is a general-purpose programming language providing support for functional programming and a strong static type system. Designed to be concise, many of Scala's design decisions aimed to address criticisms of Java.
Scala source code is intended to be compiled to Java bytecode, so that the resulting executable code runs on a Java virtual machine.
What is Scala?
Scala combines object-oriented and functional programming in one concise, high-level language. Scala's static types help avoid bugs in complex applications, and its JVM and JavaScript runtimes let you build high-performance systems with easy access to huge ecosystems of libraries.
Scala fuses OOP and FP
Scala combines object-oriented and functional programming
Scala fuses OOP and FP -> Scala is scalable
Scala combines object-oriented and functional programming
Scala fuses OOP and FP -> Scala is scalable
Scala combines object-oriented and functional programming
Scala is object-oriented
- Every value is an object
- Every operation is a method call
val sumA = 2 + 4
sumA: Int = 6
Scala fuses OOP and FP -> Scala is scalable
Scala combines object-oriented and functional programming
Scala is object-oriented
- Every value is an object
- Every operation is a method call
val sumA = 2.+(4)
sumA: Int = 6
Scala fuses OOP and FP -> Scala is scalable
Scala combines object-oriented and functional programming
Scala is functional
- Functions are first-class values
Scala fuses OOP and FP -> Scala is scalable
Scala combines object-oriented and functional programming
Scala is functional
- Functions are first-class values
- Operations of a program should map input values to output values rather than change data in place
More answers to "Why use Scala?"
More answers to "Why use Scala?"
Scala combines object-oriented and functional programming in one concise
More answers to "Why use Scala?"
Scala combines object-oriented and functional programming in one concise, high-level language.
More answers to "Why use Scala?"
Scala combines object-oriented and functional programming in one concise, high-level language. Scala's static types help avoid bugs in complex applications
More answers to "Why use Scala?"
Scala combines object-oriented and functional programming in one concise, high-level language. Scala's static types help avoid bugs in complex applications, and its JVM and JavaScript runtimes let you build high-performance systems with easy access to huge ecosystems of libraries.
The Scala interpreter
$ scala
Welcome to Scala 2.12.7.
Type in expressions for evaluation. Or try :help.
scala>
The Scala interpreter
$ scala
Welcome to Scala 2.12.7.
Type in expressions for evaluation. Or try :help.
scala> 2 + 3
res0: Int = 5
res0 * 2
res1: Int = 10
The Scala interpreter
scala> println("Let's play Twenty-One!")
Let's play Twenty-One!
Let's practice!
Introduction to Scala
