[boost] RE: [program_options] Recent changes

From: Vladimir Prus (ghost_at_[hidden])
Date: 2005-04-27 02:05:10

Hi Hartmut,

> 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.

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.

Thanks,
Volodya