Enum OffsetSizeBytes

enum OffsetSizeBytes {
    One = 1,
    Two = 2,
    Three = 3,
    Four = 4,
}

Variants

One = 1

Two = 2

Three = 3

Four = 4

Implementations

impl OffsetSizeBytes

fn try_new(offset_size_minus_one: u8) -> Result<Self, ArrowError>

Build from the offset_size_minus_one bits (see spec).

fn unpack_usize( &self, bytes: &[u8], byte_offset: usize, offset_index: usize, ) -> Result<usize, ArrowError>

Return one unsigned little-endian value from bytes.

• bytes – the Variant-metadata buffer.
• byte_offset – number of bytes to skip before reading the first value (usually 1 to move past the header byte).
• offset_index – 0-based index after the skip (0 is the first value, 1 the next, …).

Each value is self as usize bytes wide (1, 2, 3 or 4). Three-byte values are zero-extended to 32 bits before the final fallible cast to usize.

Trait Implementations

impl Clone for OffsetSizeBytes

fn clone(&self) -> OffsetSizeBytes

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OffsetSizeBytes

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

Formats the value using the given formatter.

impl PartialEq for OffsetSizeBytes

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for OffsetSizeBytes

impl StructuralPartialEq for OffsetSizeBytes