Struct ArrayView2 

pub struct ArrayView2<'a, T> { /* private fields */ }

Immutable 2D array view.

Implementations

impl<'a, T> ArrayView2<'a, T>

pub fn new( data: &'a [T], shape: [usize; 2], strides: [isize; 2], offset: isize, ) -> Result<Self>

Create a checked immutable view.

pub fn shape(&self) -> [usize; 2]

Shape as [rows, cols].

pub fn rows(&self) -> usize

Number of rows.

pub fn cols(&self) -> usize

Number of columns.

pub fn strides(&self) -> [isize; 2]

Strides in elements.

pub fn row_stride(&self) -> isize

Distance in elements between consecutive rows.

pub fn col_stride(&self) -> isize

Distance in elements between consecutive columns.

pub fn leading_dimension(&self) -> isize

Leading dimension for the current row-major-style view.

pub fn len(&self) -> usize

Number of elements in the logical view.

pub fn is_empty(&self) -> bool

Whether the logical view has no elements.

pub fn is_contiguous(&self) -> bool

Whether the view is compact row-major contiguous.

pub fn as_slice(&self) -> Option<&'a [T]>

Borrow the backing slice if this view covers it contiguously.

pub fn get(&self, row: usize, col: usize) -> Option<&'a T>

Get a copied reference at (row, col).

pub fn transpose(self) -> Self

Return a transpose view without copying.

pub fn row(&self, row: usize) -> Result<Self>

Return a row view as a one-row matrix.

pub fn row_slice(&self, row: usize) -> Result<Option<&'a [T]>>

Borrow a row as a contiguous slice when the row layout permits it.

pub fn col(&self, col: usize) -> Result<Self>

Return a column view as an rows x 1 matrix.

pub fn rows_range(&self, start: usize, end: usize) -> Result<Self>

Slice a half-open row range.

pub fn cols_range(&self, start: usize, end: usize) -> Result<Self>

Slice a half-open column range.

impl<T: Clone> ArrayView2<'_, T>

pub fn to_row_major(&self) -> Array2<T>

Copy this view into compact row-major storage.

pub fn to_col_major_vec(&self) -> Vec<T>

Copy this view into a column-major vector.

Trait Implementations

impl<'a, T: Clone> Clone for ArrayView2<'a, T>

fn clone(&self) -> ArrayView2<'a, T>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a, T: Debug> Debug for ArrayView2<'a, T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T> Index<(usize, usize)> for ArrayView2<'_, T>

type Output = T

The returned type after indexing.

fn index(&self, index: (usize, usize)) -> &Self::Output

Performs the indexing (container[index]) operation.

impl<T: Float> LinearOperator<T> for ArrayView2<'_, T>

fn rows(&self) -> usize

Number of rows.

fn cols(&self) -> usize

Number of columns.

fn matvec(&self, x: &[T], y: &mut [T]) -> Result<()>

Compute y = A x.

fn t_matvec(&self, x: &[T], y: &mut [T]) -> Result<()>

Compute y = A^T x.

fn matmat(&self, x: ArrayView2<'_, T>, y: ArrayViewMut2<'_, T>) -> Result<()>

Compute Y = A X.

fn t_matmat(&self, x: ArrayView2<'_, T>, y: ArrayViewMut2<'_, T>) -> Result<()>

Compute Y = A^T X.

impl<'a, T: Copy> Copy for ArrayView2<'a, T>