Scala and Spark for Big Data Analytics

Methods in Scala

In this part, we are going to talk about methods in Scala. As you dive into Scala, you'll find that there are lots of ways to define methods in Scala. We will demonstrate them in some of these ways:

def min(x1:Int, x2:Int) : Int = {  if (x1 < x2) x1 else x2}

The preceding declaration of the method takes two variables and returns the smallest among them. In Scala, all the methods must start with the def keyword, which is then followed by a name for this method. Optionally, you can decide not to pass any parameters to the method or even decide not to return anything. You're probably wondering how the smallest value is returned, but we will get to this later. Also, in Scala, you can define methods without curly braces:

def min(x1:Int, ...