Scala functional programming gymnastics

Question

I am trying to do the following in as little code as possible and as functionally as possible:

def restrict(floor : Option[Double], cap : Option[Double], amt : D         


        

Answer 1

I like the initial solution with the match-case most - beside the fact, that I didn't understand that amt means amount (in Germany, 'amt' means 'office') and I only knew cap as something I wear on my head ...

Now here is a really uninspired solution, using an inner method:

def restrict(floor : Option[Double], cap : Option[Double], amt : Double) : Double = {
  def restrict (floor: Double, cap: Double, amt: Double) =
    (floor max amt) min cap
  var f = floor.getOrElse (amt)            
  val c = cap.getOrElse (amt)   
  restrict (f, c, amt) 
}