[Vala] ArrayList reference count question

[Donn Ingle <donn ingle gmail com>]

Hello again,
Another newb question about ref counts:

---
using Gee;

public class Obj : Object {
  public string id;
  public Obj(string id) {
    this.id = id;
  }
}

public void foo( Obj o) {
  //It seems "o" here is a pointer - i.e. it has not inc the ref_count.
  stdout.printf("In func foo, o ref:%u\n",o.ref_count);
}

int main() {

  var L = new ArrayList<Obj>();

  L.add(new Obj("A"));

  //Why does the next line show a ref_count of 2 for L[0]?
  stdout.printf("Directly L[0].ref_count:%u\n",L[0].ref_count);

  //sundry test of function args.
  foo( L[0] );


  return 0;
}
---

Question in the code regarding the number of refs to the Obj instance.

\d