Re: [Boost-users] [mpl] Is it possible to mpl_assert depending on the derivation of a class

Hughes, James wrote:

Hello all,

I want some template code to assert if the passed in template type is NOT derived from a particular base class.

I've looked through the Template Metaprogamming book, but haven't seen anything that can do this, but I seem to remember something along those lines.

Can anyone help?

James

Hi James, the easiest way is something like the following: #include <boost/type_traits.hpp> #include <boost/static_assert.hpp> BOOST_STATIC_ASSERT (boost::is_base_of<Base, Derived>::value); Hope this helps, Martin