polars_core::frame::group_by::expr

Trait PhysicalAggExpr

Source 
pub trait PhysicalAggExpr {
    // Required methods
    fn evaluate(
        &self,
        df: &DataFrame,
        groups: &GroupPositions,
    ) -> PolarsResult<Series>;
    fn root_name(&self) -> PolarsResult<&PlSmallStr>;
}

Required Methods§

Source

fn evaluate( &self, df: &DataFrame, groups: &GroupPositions, ) -> PolarsResult<Series>

Source

fn root_name(&self) -> PolarsResult<&PlSmallStr>

Implementors§