Thread: typedef cross reference? Help

Have code like:

Code:

template <...> Tmp_a;
template <...> Tmp_b;

class A {
  typedef  Tmp_a<B:type_b> Type_a;
};

class B {
 typedef  Tmp_b<A:type_a>  Type_b;
}

Don't know how to get it working. Similar problem could happen on class declaration. But that can be solved by predeclaration. How can I deal with typedef.