Re: [boost] Re: program_options - required (or min/max) number of occurences declaratively?

From: Michael van der Westhuizen (michael_at_[hidden])
Date: 2004-09-26 08:07:04

Vladimir Prus wrote:
> Jonathan Graehl wrote:
> 
> 
>>I grepped through the program_options source and couldn't find anything
>>about declaratively specifying required options (or even more
>>specifically, min/max # of occurrences), except for positional options.
> 
> 
> Does "min/max" number of occurrences makes much sense? In variables_map, an
> option is either present, or not, it cannot be present twice.
> 

Yes, it does make sense. Two examples I can think of offhand are tcpdump
and nmap, both of which allow you to specify the -v flag multiple times
to increase verbosity.

> [snip]

Michael