Re: [boost] [program_options] post-review version

From: Vladimir Prus (ghost_at_[hidden])
Date: 2004-03-19 09:10:19

Hi Janusz,

> I try to use program_options for single config file, with
> options_description where all options are mapped to variables (
> value<T>(&variable)->default_value(x) ). For now, i must use extra
> variable_map, it's possible to omit it?

No -- I meant variables_map to be the primary interface. However, I think that 
in your case, the only drawback is extra lines in the code. Or there's 
something else? 

> And, second question, do you think about interface to create own
> validators?

This depends on your definition of validator. Is that's a function to check 
that the value is withing valid range, or something like that, you can use 
'notifier'.

If you want to customize the parsing, the current way is:

1. Declare some class derived from typed_value<YourType> and override the 
'parse' method.

2. Specialize the 'value' function to return instance of your type.

HTH,
Volodya