Re: [Boost-users] Enforcing CRTP with the MPL?

"Stefan Schild" wrote in message news:eg3r7s$bcb$1@sea.gmane.org...

Hi there

Having a templatized base class B

template<class T> class B .....

is it possible to enforce that a class D can derive from B IF AND ONLY IF the curiously recurring template pattern is applied, that is

class D1 : public B<D1> ... // ok, compile class D2 : public B<X> ... // not ok, do not compile

???

Thx Stefan

Did you try: template<typename T> class B { BOOST_STATIC_ASSERT( boost::is_base_and_derived::value ); .... }; Gennadiy