Enum CombineOp 

pub enum CombineOp {
    Keep,
    Replace,
    Max,
    Min,
    Sum,
}

An in-place single-cell reduction op for the live tf-fold (Column::combine_at): fold one incoming value into a forming aggregate without re-reducing the period or allocating. The dual of [crate::Agg]’s reduce — first keeps, last replaces, the rest combine associatively.

Variants

Keep

Keep the destination unchanged (the period’s first).

Replace

Overwrite with the source value (the period’s last).

Max

Running maximum.

Min

Running minimum.

Sum

Running sum.

Trait Implementations

impl Clone for CombineOp

fn clone(&self) -> CombineOp

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CombineOp

impl Debug for CombineOp

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

Formats the value using the given formatter.

impl Eq for CombineOp

impl PartialEq for CombineOp

fn eq(&self, other: &CombineOp) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for CombineOp