python::object && mpl

[Arnaldur Gylfason]

Dave,

I've glanced through mpl and have a rough idea about it's function.
>From what I gather, the use_generator is the Glue function class  and the
generators have to support templated inheritance but don't need to be
function classes.
The following design should be possible:

template <class T, bool checked, class Base>
indexable : Base
{
    proxy operator[](...
    ...
};

...

template <class...., checked>
struct object
    : gen_linear_hierarchy<
        typename get_unique_generators<mpl::type_list<c1,c2...cn> >::type
    , use_generator<
            object<c1,c2,c3...cn>, checked>
        >
    >
{
};

...

template <class Object,checked>
struct use_generator
{
    template <class Generator, class Base>
    struct apply
    {
        typedef Generator<Object,checked,Base> type;
    };
};

Is my understanding correct?
What design would you opt for?

Cheers

Arnaldur