I have a number of classes that look like this:

class Foo(val:BasicData) extends Bar(val) {
    val helper = new Helper(val)
    val derived1 = helper.getDerived1Value()
    val derived2 = helper.getDerived2Value()
}

...except that I don't want to hold onto an instance of "helper" beyond the end of the constructor. In Java, I'd do something like this:

public class Foo {
  final Derived derived1, derived2;
  public Foo(BasicData val) {
     Helper helper = new Helper(val);
     derived1 = helper.getDerived1Value();
     derived2 = helper.getDerived2Value();
  }
}

So how do I do something like that in Scala? I'm aware of creating a helper object of the same name of the class with an apply method: I was hoping for something slightly more succinct.