Learn Scala

Scala Topics

Click on a topic to expand and learn in detail.

• 1. Introduction to Scala

object HelloWorld {
  def main(args: Array[String]): Unit = {
    println("Hello, Scala!")
  }
}
      

Scala combines functional and object-oriented programming paradigms.

• 2. Variables & Data Types

var name: String = "Alice" // mutable
val age: Int = 25           // immutable
val pi: Double = 3.14
      

Use var for changeable values, val for constants.

• 3. Functions

def add(a: Int, b: Int): Int = {
  a + b
}
println(add(5,3))
      

Functions are reusable blocks of code.

• 4. Classes & Objects

class Person(val name: String, var age: Int){
  def greet(): Unit = println(s"Hello $name")
}

val p = new Person("Alice", 25)
p.greet()
      

Scala supports classes, objects, and OOP principles.

• 5. Advanced Scala
• Traits & Inheritance
• Functional Programming (map, filter, reduce)
• Pattern Matching
• Collections & Generics

val numbers = List(1,2,3,4,5)
val squares = numbers.map(x => x*x)
println(squares)