Re: [Boost-Users] Re: spirit list_p example

From: Joel de Guzman (djowel_at_[hidden])
Date: 2003-08-30 07:34:35

HartmutKaiser_at_[hidden] wrote:

> If you look at the parser definition, you'll notice, that this
> particular list parser is designed to parse escaped C-strings, integers
> or reals separated by commas. I.e. no empty elements. If you would like
> to make your list_p to match even empty elements, you'd have to make the
> list_csv_item optional:
> 
>     list_csv =
>             list_p(
>                 !list_csv_item[append(vec_item)],
>     // ---------^ note this exclamation sign!
>                 ','
>             )[append(vec_list)]
>         ;

Ok, I stand corrected. Please disregard my previous comment that
"I guess the list_p was not designed to work with null entries". I
have a question though:

-- 
Joel de Guzman
http://www.boost-consulting.com
http://spirit.sf.net