Question 1
What is the use of lazy val ?

In Scala we use lazy keyword to define a value as being lazy, meaning that it is evaluated only once, when it’s accessed.

Question 1
What is functional programming ?

Functional programming is a style of programming where pure functions and immutable values are the basic building blocks.

Question 2
Is Scala a functional language ?

Scala is a multi-paradigm programming language, it …

In this tutorial, we will go through all the steps to make your own Facebook Messenger Bot that echoes back messages it receives. We will use Scala and Akka HTTP , library to create REST API.

Let’s first define