Try something like this:

foreach (i, dummy; foo.tupleof)
{
alias Tuple!(__traits(getAttributes, foo.tupleof[i])) tp;
pragma(msg, tp);
}

Ok so that is because ref does not work with foreach on tuples. Somehow I thought that got fixed.

Anyways, with your suggestion I get a strange error.

Error: first argument is not a symbol

tuple(false)

Regards

- Puneet