Trait polars::frame::group_by::expr::PhysicalAggExpr

pub trait PhysicalAggExpr {
    // Required methods
    fn evaluate(
        &self,
        df: &DataFrame,
        groups: &GroupsProxy
    ) -> Result<Series, PolarsError>;
    fn root_name(&self) -> Result<&str, PolarsError>;
}

Available on crate feature algorithm_group_by only.

Required Methods

fn evaluate( &self, df: &DataFrame, groups: &GroupsProxy ) -> Result<Series, PolarsError>

fn root_name(&self) -> Result<&str, PolarsError>

Implementors