Sascha Seewald wrote:

i wonder if it would be possible to support lazy evaluation in boost::operators.

we could provide "lazy" operator class templates and combine them with the "normal" operator class templates.

example:

class point : boost::addable< point<T> // point + point (normal) , boost::subtractable< point<T> // point - point (normal) , boost::lazy_dividable2< point<T>, T // point / T (lazy) , boost::lazy_multipliable2< point<T>, T // point * T, T * point (lazy) > > > > { ... }

what do you think?

I think I don't really understand what you are proposing. Can you provide a use case (preferably small but complete example) what exactly a lazy operator should do and why we need it? Regards, Daniel