/**
   isAbstract<T>::result is 1 if T is abstract, 0 if otherwise.
 */
template<typename T>
class isAbstract
{
   class No { };
   class Yes { No no[3]; };

   template<class U> static No test( U (*)[1] ); // not defined
   template<class U> static Yes test( ... ); // not defined

public:
   enum { result = sizeof( isAbstract<T>::template test<T>( 0 ) ) == sizeof(Yes) };
};

bool twoAbstract = isAbstract<myClass2>::result;
bool oneAbstract = isAbstract<myClass1>::result;

error C2784: 'AiLive::isAbstract<T>::No AiLive::isAbstract<T>::test(U (*)[1])' : could not deduce template argument for 'U (*)[1]' from 'myClass2'

template<class U> static No test( U (*)[1] );

template<class U> static No test( U (*x)[1] );
template<class U> static No test( U (*)() );
template<class U> static No test( U (*x)() );

template <typename U>
struct U2 : public U
{
   U2( U* ) {}
};

// Match if I can make a U2
template <typename U> static No test( U2<U> x  );

// Match if I can make a U2
template <typename U> static No test( U2<T> x  );

template<typename T>
class isAbstract
{
    class No { };
    class Yes { No no[3]; };

    template<class U> static No test( U (*)[1] ); // not defined
    template<class U> static Yes test( ... ); // not defined

public:
    enum { result = sizeof( test<T>( 0 ) ) == sizeof(Yes) };
};

template< typename  T, typename  U>
class isAbstract
{
   class No { };
   class Yes { No no[3]; };

   template<class U> static No test( U (*)[1] ); // not defined
   template<class U> static Yes test( ... ); // not defined

public:
   enum { result = sizeof( isAbstract<T>::template test<T>( 0 ) ) == sizeof(Yes) };
};


bool twoAbstract = isAbstract<myClass2, SomeTypeU>::result;