Re: [Boost-users] [program_options] checking the presence of required arguments

From: Vladimir Prus (ghost_at_[hidden])
Date: 2007-02-28 01:55:35

Torrey Pines wrote:

> Hi
> 
> My program has a bunch of required arguments. I grouped them into one
> options_description:
> 
> options_description required("Required options");
> required.add_options() /* .... */ ;
> 
> // ...
> 
> options_description desc("Allowed options");
> desc.add(required).add(other);
> 
> I'd like to check that all required arguments are in fact supplied
> without having to do
> 
> if(vm.count("arg1") == 0) {
>   cerr << "usage error: arg1 is required\n";
>   return 1;
> }
> 
> for each of them. Any suggestions?

Nope. This is planned feature, not implemented at the moment.

Sorry,
Volodya