Enum ColumnData 

#[non_exhaustive]
pub enum ColumnData {
    Bool(Vec<Option<bool>>),
    Int64(Vec<Option<i64>>),
    UInt64(Vec<Option<u64>>),
    Float64(Vec<Option<f64>>),
    String(Vec<Option<String>>),
}

Type-safe column storage. Each variant holds nullable values.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Bool(Vec<Option<bool>>)

Int64(Vec<Option<i64>>)

UInt64(Vec<Option<u64>>)

Float64(Vec<Option<f64>>)

String(Vec<Option<String>>)

Implementations

impl ColumnData

pub fn len(&self) -> usize

Number of elements (including nulls).

pub fn is_empty(&self) -> bool

Whether the column has no elements.

pub fn dtype(&self) -> DataType

Get the data type.

pub fn get(&self, index: usize) -> Option<Scalar>

Get value at index as Scalar.

pub fn non_null_count(&self) -> usize

Count of non-null values.

pub fn take(&self, indices: &[usize]) -> Self

Collect rows at specified indices into a new ColumnData.

Panics

Panics if any index in indices is out of bounds. Callers must ensure all indices are valid (e.g., from filter or sort which derive indices from 0..self.len()).

pub fn take_optional(&self, indices: &[Option<usize>]) -> Self

Collect rows at specified optional indices into a new ColumnData.

Some(i) takes the value at index i; None produces a null value. Used by join operations where one side may have no matching row.

Trait Implementations

impl Clone for ColumnData

fn clone(&self) -> ColumnData

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnData

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

Formats the value using the given formatter.