[Boost-users] Re: boost::program options question. Implicit() doesn't seem to work

From: Vladimir Prus (ghost_at_[hidden])
Date: 2005-03-09 02:41:39

Alexis H. Rivera-Rios wrote:

> According to the documentation the line:
> desc.add_options()
> ("debug", po::value<std::string>()->implicit(),
> "enable debugging" );
> 
> enables me to do something like this:
> myexec --debug
> 
> However, if I do that I get an assertion error.  The
> code
> requires a string so this will work:
> myexec --debug whatever
> 
> What am I doing wrong?  Is it me or is it the library?

I think it's the library. But in any case, I plan to remove the 'implicit'
flag in 1.33. Why do you want it? What about:

  desc.add_options()
     ("debug", bool_option(), "enable debugging")

?
- Volodya