Re: [Boost-users] [Proto] Extracting types of sub-expression in transform

Ivan Godard wrote:

Eric Niebler wrote:

...

Anybody who understands van Wijngaarden grammars can help by explaining them to me in small words. :-)

A van Wijngaarden Grammar definition for some target language (Algol68 in this case) is ...

<snip helpful description> A very dim light bulb appears over my head. I'll go off an read what I can find and come back to this. Many thanks for pointing me in the right direction. -- Eric Niebler BoostPro Computing http://www.boostpro.com