how do I create an array of objects as member of class?

[Assembly via Digitalmars-d-learn]

Imaginary code:

class Foo { }
class Baa {
  Foo a = new Foo();
  Foo b = new Foo();
  Foo[] l = [a,b];
}
What should I use instead of to it work? Array!Foo(a,b) didn't 
worked either.

I know this works:

class Baa {

Foo a = new Foo();
  Foo b = new Foo();
Foo[] l;

this() {
 l = [a,b];
}

But I'd like to initializa it at declaration time