[Boost-users] [Program Options] Requiring command-line options

Subject: [Boost-users] [Program Options] Requiring command-line options
From: Jeremy Abramson (abramson_at_[hidden])
Date: 2010-06-03 03:41:21

Heya!  I just thinking about switching from simpleOpt to BoostPO for 
command line handling, mainly because of its support of configuration 
files.  This may be a stupid question, but I haven't seen anything about 
making a command line parameter *required*.  You'd think this is a 
pretty common thing, but I didn't see any mention of it in the tutorials 
or anything.  I guess I could just make certain parameters default 
-1/NULL or something, and then test at the end if they're still equal to 
that, but that seems a bit ugly. 

Is there built in support (a flag in the "add_options" function or 
something) for making certain parameters required?

Thanks a lot!