Struct ndarray_npz::NpyViewMut

pub struct NpyViewMut<'a> { /* private fields */ }

Mutable view of memory-mapped .npy files within an .npz file.

Does not automatically verify the CRC-32 checksum but does update it on Drop::drop if view_mut has been invoked and the checksum has not manually been updated by invoking update.

Implementations

impl<'a> NpyViewMut<'a>

pub fn status(&self) -> ChecksumStatus

CRC-32 checksum status.

pub fn verify(&mut self) -> Result<u32, ViewNpzError>

Verifies and returns CRC-32 checksum by reading the whole array.

Changes checksum status to Outdated if invalid or to Correct if valid.

Errors

Fails with ZipError::Io if the checksum is invalid.

pub fn update(&mut self) -> u32

Updates and returns CRC-32 checksum by reading the whole array.

Changes checksum status to Correct.

Automatically updated on Drop::drop iff checksum status is Outdated.

pub fn view<A, D>(&self) -> Result<ArrayView<'_, A, D>, ViewNpzError>where A: ViewElement, D: Dimension,

Returns an immutable view of a memory-mapped .npy file.

Iterates over bool array to ensure 0x00/0x01 values.

Errors

Viewing an .npy file can fail with ViewNpyError.

pub fn view_mut<A, D>(&mut self) -> Result<ArrayViewMut<'_, A, D>, ViewNpzError>where A: ViewMutElement, D: Dimension,

Returns a mutable view of a memory-mapped .npy file.

Iterates over bool array to ensure 0x00/0x01 values.

Changes checksum status to Outdated.

Errors

Viewing an .npy file can fail with ViewNpyError.

Trait Implementations

impl<'a> Debug for NpyViewMut<'a>

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

Formats the value using the given formatter.

impl<'a> Drop for NpyViewMut<'a>

fn drop(&mut self)

Executes the destructor for this type.