Re: [Boost-users] boost static assert and is_base_of question.

10 Aug 2007

      chun ping wang wrote:
...
...
Hi, how would I ensured that class U of template class is a dervied
class of boost::operators<U> using BOOST_STATIC_ASSERT and
boost::is_base_of...
template <T>
myFunc(const T& a)
{
   typedef boost::operators<T> operatorT;
   BOOST_STATIC_ASSERT(is_integral<T>::value || is_base_of
...
...
...
value);
   // ... other codes.
}
doing this gives me an error.
Right, since BOOST_STATIC_ASSERT is a macro, you need some extra parenthesis 
to stop the "," in the template arg list to is_base_of from being seen as a 
macro-argument separator:

BOOST_STATIC_ASSERT((is_base_of::value));

HTH, John.

Re: [Boost-users] boost static assert and is_base_of question.

John Maddock