Use method return value as default constructor parameter in Scala

Question

This is what I would like to do:

object foo {
    def bar = Array(1, 2, 3, 4, 5)
}
class foo (baz = bar) {
}

This causes compiler errors. Is there another way to accomplish this?

Answer 1

object foo {
    def bar = Array(1, 2, 3, 4, 5)
}

class foo (baz: Array[Int] = foo.bar) {
}

Answer 2

You can use an auxiliary constructor

object Foo {
  def bar = Array(1, 2, 3, 4, 5)
}

class Foo(baz: Array[Int]) {
  def this() = this(Foo.bar)
}