pub fn new(columns: usize) -> Self {
        Self {
            columns,
            vector: IndexVec::new(),
        }
    }
/// Create a new empty sparse bit matrix with no rows or columns.
Create a new empty sparse bit matrix with no rows or columns.
Create a new empty sparse bit matrix with no rows or columns .
pub fn new(columns: usize) -> Self {
        Self {
            columns,
            vector: IndexVec::new(),
        }
    }
pub fn new ( columns : usize ) -> Self { Self { columns , vector : IndexVec :: new ( ) , } }
Create a new empty sparse bit matrix with no rows or columns.
Create a new empty sparse bit matrix with no rows or columns .
columns
usize
columns
usize