Thankyou! I just noticed the quick reference page, it has been very helpful. On Sat, 06 Nov 2004 11:13:05 -0500, Jeffrey Holle wrote:

Of "course". That is what the optional operator is for. Something like: *alpha_p << !(ch_p('-') << *digit_p)

Cory Nelson wrote:

...

I'm trying to write a parser with elements that might not occur - is this possible?

like:

string ['-' number]

that matches "foo" or "foo-123"

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-- Cory Nelson http://www.int64.org

Cory Nelson wrote:

Are there any tools to translate the various BNF formats into Spirit code? I think this would be very useful.

AFAIK, no. -- Joel de Guzman http://www.boost-consulting.com http://spirit.sf.net