Struct AggSpec 

pub struct AggSpec { /* private fields */ }

Per-column aggregator assignment, with a default for unlisted columns.

Implementations

impl AggSpec

pub fn ohlcv() -> Self

The OHLCV defaults: open=first, high=max, low=min, close=last, volume=sum; every other column falls back to last.

pub fn set(&mut self, name: impl Into<String>, agg: Agg)

Override (or add) a column’s aggregator.

pub fn agg_for(&self, name: &str) -> Agg

The aggregator for a column (the default if unset).

Trait Implementations

impl Clone for AggSpec

fn clone(&self) -> AggSpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AggSpec

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

Formats the value using the given formatter.

impl Default for AggSpec

fn default() -> Self

Returns the “default value” for a type.