Trait GroupsUdf 

pub trait GroupsUdf:
    Send
    + Sync
    + 'static {
    // Required method
    fn evaluate_on_groups<'a>(
        &self,
        inputs: &[Arc<dyn PhysicalExpr>],
        df: &DataFrame,
        groups: &'a GroupPositions,
        state: &ExecutionState,
    ) -> PolarsResult<AggregationContext<'a>>;
}

Required Methods

fn evaluate_on_groups<'a>( &self, inputs: &[Arc<dyn PhysicalExpr>], df: &DataFrame, groups: &'a GroupPositions, state: &ExecutionState, ) -> PolarsResult<AggregationContext<'a>>

Implementors