Quick code, I'm not sure if it's compilable or work, don't have time to test for now.

template <class INT_TYPE,class CONTAINER_INT=uINT,

												  INT_TYPE ContainerSize=sizeof(CONTAINER_INT)*8,

												  class DATA_CONTAINER=BitsetDataContainer<INT_TYPE,CONTAINER_INT,ContainerSize> >

   class BitsetMatrix

   {

   public:

	 typedef INT_TYPE IntType;

		///code

   };





template <class T>

   typename T::IntType Sum(const T &M)

   {

		typename T::IntType Rt;

		if (!M.IsEmpty())

		{

				//count sum using another function

		}

		return Rt;

   }

Quick code, I'm not sure if it's compilable or work, don't have time to test for now.

[source lang="cpp"]template <class INT_TYPE,class CONTAINER_INT=uINT,                                                  INT_TYPE ContainerSize=sizeof(CONTAINER_INT)*8,                                                  class DATA_CONTAINER=BitsetDataContainer<INT_TYPE,CONTAINER_INT,ContainerSize> >   class BitsetMatrix   {   public:     typedef INT_TYPE IntType;        ///code   };template <class T>   typename T::IntType Sum(const T &M)   {        typename T::IntType Rt;        if (!M.IsEmpty())        {                //count sum using another function        }        return Rt;   }[/source]