In Scala, how do you define a local parameter in the primary constructor of a class?

Question

In Scala, how does one define a local parameter in the primary constructor of a class that is not a data member and that, for example, serves only to initialize a data membe

Answer 1

You can create temporary variables throughout the initialization of single class members like this:

class A(b:Int){
  val m = {
    val tmp = b*b
    tmp+tmp
  }
}