From: "Hartmut Kaiser" <hartmut.kaiser@gmail.com> The documentation for Spirit 2 is still in the process of being written. Parts of it are in place, but not all of it. Joel and I are working on it to have it ready for BoostCon.
Yes, the docs are admittedly patchy. With you mentioning parse&generate I ran straight to .../parsing_and_generating.html just to find a work-in-progress page. Poked here and there. Often the same. That's OK I can wait. I hope you'll keep all this lexical_cast/convert noise in mind when filling in the blanks. :-)
... A good source of information you will find by looking at the examples and tests in the repository.
Thanks. Will do.
and for user types (uses operator<<() and operator>>()):
convert<spirit::tag::stream>::to() convert<spirit::tag::stream>::from()
Is it possible to have something like convert<int>::from() convert<user_type>::from() (we do not need 'to' with the interface).
(spirit::stream is an instance of spirit::tag::stream). The idea would be to use Spirit directly if you need more powerful constructs like sequences and convert for conversion of single items.
For more powerful constructs my preference will probably be to "use Spirit directly" literally instead of through the (likely limiting) convert interface. V.