It seems like saying that a constructor with all default
arguments is not a default constructor is a distinction without
meaning. What are you doing that you would care?
The Object.factory does not seem to consider a constructor with
default arguments as a defaultConstructor. Consider the following
code snippet. It works only when I uncomment line 3.
module foo; // 1
class Foo { // 2
// this() {} // 3
this(int n=0) {} // 4
} // 5
void main() { // 6
auto obj = Object.factory("foo.Foo"); // 7
assert(obj !is null); // 8
auto foo = cast(Foo) obj; // 9
assert(foo !is null); // 10
} // 11
