How to pass an object to a method in Scala

Question

How can I pass the reference of an object to method in Scala? E.g. I want this to compile

object Constants {
  val constantA:Double = ???
}


def calc(number         


        

Answer 1

You can use the Any type

def calc(numbers:Seq[Double], constants: Any) 

but this wouldn't allow you to access the constantA value. Alternatively you could define a trait with the constant and let you object implement that:

trait ConstantA {
  val constantA:Double
}

object Constant extends ConstantA {
  override val constantA:Double = 0.0
}

def calc(numbers:Seq[Double], constants: ConstantA) {
   ...
   // use constants.constantA
   println(constants.constantA)
   ...
}