[boost] [program options] optional/required options

From: Stefan Slapeta (stefan_at_[hidden])
Date: 2005-02-23 06:12:29

Hi,

I don't know if this has been answered yet, but is there any concept of 
optional/required options in the program option library?

Currently, only "allowed options" can be defined, no?

I would be great if you could define different sets of required option 
groups (because it's possible that a+b _or_ a+c are required) and 
provide some validatation for that. Otherwise, you have to do that by 
hand again and again.

Stefan