scala: abstract classes instantiation?

Question

How it comes that I instantiate an abstract class?

  abstract class A {
    val a: Int
  }

  val a = new A {val a = 3}

Or is some concrete cla

Answer 1

Scala allows you to create not only anonymous functions but anonymous classes too.

What you have done is simular to

class Anon extends A {
  val a = 3
} 

but without Anon name