Struct BufferByteSource 

pub struct BufferByteSource(pub Buffer<u8>);

Available on crate features async and polars-io only.

Byte source backed by a Buffer, which can potentially be memory-mapped.

Tuple Fields

0: Buffer<u8>

Trait Implementations

impl ByteSource for BufferByteSource

async fn get_size(&self) -> Result<usize, PolarsError>

async fn get_suffix(&self, n: usize) -> Result<(Buffer<u8>, usize), PolarsError>

Fetch the last n bytes and the total size of the source, in a single request. Returns fewer than n bytes if the source is smaller than n.

async fn get_range( &self, range: Range<usize>, ) -> Result<Buffer<u8>, PolarsError>

Panics

async fn get_ranges( &self, ranges: &mut [Range<usize>], ) -> Result<HashMap<usize, Buffer<u8>, RandomState>, PolarsError>

Note: This will mutably sort ranges for coalescing.

impl From<BufferByteSource> for DynByteSource

fn from(value: BufferByteSource) -> DynByteSource

Converts to this type from the input type.