Re: 2 dimensional array within function
"David Wilkinson" <firstname.lastname@example.org> ha scritto nel messaggio
Both these problems would not occur if you used std::vector.
I agree with David Wi.
std::vector, and STL containers in general, seem to offer better
"composibility" than MFC containers.
Moreover, if the purpose is to store a 2D matrix like MxN, then a viable
solution could be also to use a single std::vector (or even valarray), sized
M*N (rowCount * coumnCount), and provide a method to address each element,
converting from (row, column) pair index to a single index to access the
array, using a formula like this:
index = col + row*columnCount
template <typename T>
explicit Matrix( int columnCount, int rowCount )
: m_data( columnCount * rowCount ), // set matrix size
m_columnCount( columnCount ),
m_rowCount( rowCount )
const T & at( int row, int column ) const
ASSERT( row >= 0 && row < m_rowCount );
ASSERT( column >= 0 && column < m_columnCount );
// Access specific element in 1D array
// (convert from 2D (row, column) to 1D array index)
return m_data.at( column + row * m_columnCount );
std::vector< T > m_data;
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