Andreas Pokorny wrote:
On Sat, Aug 12, 2006 at 07:02:07AM +0800, Joel de Guzman <joel@boost-consulting.com> wrote:
Do we have to write rules for all permutations of A and B and C? What about literals and built-in types? Example:
a_ >> b_ >> "hi" | c_ >> 12345
Of course not. This was just for the example. Usually one would separate the different types into categories or concept, and define rules on top of them. For example in a matrix vector library, one might define the categories matrix, column vector, row vector and scalar.
Sorry, that was a dumb question. That's what categories are for, I know. So, anyway, it would really help if you could provide a short close-to-real-world tutorial. Regards, -- Joel de Guzman http://www.boost-consulting.com http://spirit.sf.net