Struct ValidityBitmap 

pub struct ValidityBitmap { /* private fields */ }

Bit-packed validity bitmap using Vec<u64>.

Each bit indicates whether the corresponding row is valid (1) or missing/null (0). Uses 1 bit per row instead of 1 byte, yielding 8× memory savings over Vec<bool>.

Implementations

impl ValidityBitmap

pub fn all_valid(len: usize) -> Self

Creates a bitmap where all len positions are valid.

pub fn all_invalid(len: usize) -> Self

Creates a bitmap where all len positions are invalid (null).

pub fn empty() -> Self

Creates an empty bitmap with no rows.

pub fn is_valid(&self, idx: usize) -> bool

Returns true if the value at idx is valid (not null).

pub fn set_valid(&mut self, idx: usize)

Marks position idx as valid.

pub fn set_invalid(&mut self, idx: usize)

Marks position idx as invalid (null).

pub fn push(&mut self, valid: bool)

Appends a new position (valid or invalid).

pub fn len(&self) -> usize

Returns the total number of tracked positions.

pub fn is_empty(&self) -> bool

Returns true if the bitmap tracks zero positions.

pub fn null_count(&self) -> usize

Counts the number of null (invalid) positions.

Uses hardware POPCNT instruction for fast counting.

pub fn valid_count(&self) -> usize

Counts the number of valid (non-null) positions.

pub fn has_nulls(&self) -> bool

Returns true if any position is null.

pub fn valid_indices(&self) -> ValidIndicesIter<'_>

Returns an iterator over indices of valid positions.

Trait Implementations

impl Clone for ValidityBitmap

fn clone(&self) -> ValidityBitmap

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ValidityBitmap

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

Formats the value using the given formatter.

impl PartialEq for ValidityBitmap

fn eq(&self, other: &ValidityBitmap) -> 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 StructuralPartialEq for ValidityBitmap