Building boost::options from a string/boost::any map

Question

I have a map which represents a configuration. It\'s a map of std::string and boost::any.

This map is initialized at the start and I\'d

Answer 1

template
bool any_is(const boost::any& a)
{
    try
    {
        boost::any_cast(a);
        return true;
    }
    catch(boost::bad_any_cast&)
    {
        return false;
    }
}

// ...

    po::options_description desc;
    std::for_each(m_Config.getTuples().begin(),
                  m_Config.getTuples().end(),
                  [&desc](const TuplePair& _pair)
    {
        if(any_is(_pair.first))
        {
            desc.add_options() { _pair.first, po::value, ""};
        }
        else if(any_is(_pair.first))
        {
            desc.add_options() { _pair.first, po::value, ""};
        }
        else
        {
            // ...
        }
    });

// ...

If you have more than a handful of types consider using typelists.