① The destructor here is to delete the space of matrix data. Here the pointer points to
the matrix data. We use here to meet with .
② The member variable , as mentioned in , is to count the number of pointers
which point to the space of the data of this matrix.
③ Since we need to change or get the value of outside the class:: , we should
write member functions: .
④ Surely, when overloading the operator in class:: , we need to operate the matrix
data. Hence, the member function should be included.
◉ The design of Class:: is shown as follows: (part of the code mat.hpp)
this->ptr_count = 1;
}
Data::~Data()
{
delete[] this->dataval; // 清理矩阵的数据
this->dataval = NULL;
}
myType * Data::getDataValue()
{
return this->dataval;
}
void Data::addPtrCount()
{
this->ptr_count++;
}
void Data::minusPtrCount()
{
this->ptr_count--;
}
int Data::getPtrCount()
{
return ptr_count;
}
class Mat
{
private:
int row;
int col;
int size;
int channel;
Data * dataptr;
static int count;
int mat_num;
public:
Mat();
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