Scala's result type "Unit"

A result type of Unit indicates the function returns no interesting

value. Scala’s Unit type is similar to Java’s void type, and in fact every

void-returning method in Java is mapped to a Unit-returning method in

Scala.

def test(args: Array[String]): Unit = {

var i = 0

while (i < args.length) {

println(args(i))

i += 1

}

}