RE: [boost] RE: [program_options] Recent changes

From: Hartmut Kaiser (HartmutKaiser_at_[hidden])
Date: 2005-04-27 04:32:49

Vladimir Prus wrote:

> >> just before feature freeze, I've committed some changes to
> >> program_options:
> > I recently had some problems with changed semantics of a 0 
> (zero) as 
> > the style parameter in
> > 
> >     parse_command_line(argc, argv, opts_desc, 0, ...); 
> > here------------------------------------------^
> > 
> > where the '0' in earlier versions was interpreted as the 
> > default_style, but it is interpreted now as is (as zero).
> > 
> > Was this change a bugfix?
> 
> No, it was a regression. A fix and a test for this problem 
> are now committed.

Thanks for fixing!

> OTOH, you can rewrite the above as:
> 
>    command_line_parser(argc,
>      argv).options(desc).additional_parser(whatever).run()
> 
> Some kind of named parameters, which does not require to pass 
> '0' for 'style' at all.
> 
> But parse_command_line function will be still there anyway.

Yeah, I know. The parse_command_line is more convenient.

Regards Hartmut