[Boost-users] [program_options] making options mandatory

From: Luke Elliott (luke_elliott_at_[hidden])
Date: 2006-04-26 18:32:13

Hi

Is it possible to make options mandatory in program_options? I see some 
references to such functionality in various review emails, but I can't 
find anything in the docs themselves.

Somewhat related: I actually want the mandatory options to be positional 
options. I there's an exception class too_few_positional_options_error 
but it doesn't appear to be used at all 
(too_many_positional_options_error is).

The solution I have at the moment is to have a separate 
options_description for mandatory options and then to check for count() 
!= 0 for those options after parsing...

Thanks in advance

Luke Elliott.