#include <assert.h>
#include <typeinfo>
struct CTreeObject1
{
};
/************************************************************************/
/* Nammed structs - for using one type more than once in SinglesCont. */
/************************************************************************/
template< class TObject, class TName>
struct NammedObject : public TObject, public TName
{
typedef TObject object_type;
};
struct stFirst{};
struct stSecond{};
template <typename T>
struct UnpackObjectType
{
typedef T TT;
};
template<typename T, typename U>
struct UnpackObjectType< NammedObject<T, U> >
{
typedef T TT;
};
int main()
{
typedef NammedObject<CTreeObject1,stFirst> T1;
typedef NammedObject<CTreeObject1,stSecond> T2;
typedef CTreeObject1 T3;
UnpackObjectType<T1>::TT d1;
UnpackObjectType<T2>::TT d2;
UnpackObjectType<T3>::TT d3;
//required
assert( typeid(d1) == typeid(d2));
assert( typeid(d2) == typeid(d3));
return 0;
}
Tag: templates
g++ error: expected primary-expression before > token
For g++ compiler is sometimes necessary to specify more typename / template keywords than for Visual Studio. This is one of examples.
To the following code it’s necessary to add template keyword:
TMemoryManager & memMngr = GetMemoryManager(); m_pObject = memMngr.CreateObject<TObject>(this, m_pContainerOwner);
use
TMemoryManager & memMngr = GetMemoryManager(); m_pObject = memMngr.template CreateObject<TObject>(this, m_pContainerOwner);
