how do I increment an integer variable I passed into a function in Scala?

Question

I declared a variable outside the function like this:

var s: Int = 0

passed it such as this:

def function(s: Int):         


        

Answer 1

If you just want continuously increasing integers, you can use a Stream.

val numberStream = Stream.iterate(0)(_ + 1).iterator

That creates an iterator over a never-ending stream of number, starting at zero. Then, to get the next number, call

val number: Int = numberStream.next