From: Gernot Neppert (gn_at_[hidden])
Date: 2000-09-04 08:02:24


Here's an alternative implementation for method "to_ptr" which might
be faster:

        template<typename ValueType>
        ValueType * to_ptr()
        {
            holder<ValueType>* const hld =
dynamic_cast<holder<ValueType>*>(content);
           return hld ? &hld -> held : 0;
}