Gets a row.

Get the value of the row at a given index from the matrix (whatever the StorageFormat of the matrix).

Note

For row-matrices, it is equivalent to operator[], for column-matrices a traversal of the matrix is required (in \(\mathcal O(n)\)).

Warning

The matrix will perform boundary check.

Parameters

matrix	The matrix considered.
index	The coefficient index.

Returns

The row at given index.

Friends
template<typename _CT , template< typename, int > typename SCT>
SCT< _CT, ROW >	get_row (const Sparse_matrix_core< _CT, COLUMN, SCT > &matrix, size_t index)
	Gets a row from a COLUMN matrix.
template<typename _CT , template< typename, int > typename SCT>
SCT< _CT, ROW >	get_row (const Sparse_matrix_core< _CT, ROW, SCT > &matrix, size_t index)
	Gets a row from a ROW matrix.