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

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? Thanks