Struct arrow::buffer::Buffer

pub struct Buffer { /* fields omitted */ }

Buffer is a contiguous memory region of fixed size and is aligned at a 64-byte boundary. Buffer is immutable.

Methods

impl Buffer

pub fn from_raw_parts(ptr: *const u8, len: usize) -> Self

Creates a buffer from an existing memory region (must already be byte-aligned)

pub fn len(&self) -> usize

Returns the number of bytes in the buffer

pub fn is_empty(&self) -> bool

Returns whether the buffer is empty.

pub fn data(&self) -> &[u8]

Returns the byte slice stored in this buffer

pub fn slice(&self, offset: usize) -> Self

Returns a slice of this buffer, starting from offset.

pub fn raw_data(&self) -> *const u8

Returns a raw pointer for this buffer.

Note that this should be used cautiously, and the returned pointer should not be stored anywhere, to avoid dangling pointers.

pub fn empty() -> Self

Returns an empty buffer.

Trait Implementations

impl From<Buffer> for Bitmap

fn from(buf: Buffer) -> Self

Performs the conversion.

impl<T: AsRef<[u8]>> From<T> for Buffer

Creating a Buffer instance by copying the memory from a AsRef<[u8]> into a newly allocated memory region.

fn from(p: T) -> Self

Performs the conversion.

impl Send for Buffer

impl Clone for Buffer

fn clone(&self) -> Buffer

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Sync for Buffer

impl PartialEq<Buffer> for Buffer

fn eq(&self, other: &Buffer) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Buffer) -> bool

This method tests for !=.

impl Debug for Buffer

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

Formats the value using the given formatter.