Question

how to convert a value when using it? Example:

scala> def sum(x:Double, y:Int) {
     | x + y
     | }
sum: (x: Double,y: Int)Unit

scala> println(sum(2,3))
()

How to modify the line with println to print the correct number?

Thanks

Answer 1

Note that sum returns Unit:

sum: (x: Double,y: Int)Unit

This happens because you missed an equal sign between method declaration and body:

def sum(x:Double, y:Int) {

You should have declared it like this:

def sum(x:Double, y:Int) = {