Re: [Boost-users] [proto] : Proto transform with state

On 11/18/2010 12:31 PM, Dave Abrahams wrote:

On Wed, Nov 17, 2010 at 1:46 PM, Eric Niebler wrote:

...

See the attached code. I wish I had a better answer. It sure would be nice to generalize this for other times when new state needs to bubble up and back down.

Forgive me if I'm telling you something you already know, but there's probably already an abstraction for this out there; it sounds like classic attribute-grammar stuff.

If you have more insights to share, I'm all ears. I don't know enough about attribute-grammar to see the applicability. -- Eric Niebler BoostPro Computing http://www.boostpro.com