polars_expr::reduce

Trait NumericReduction

Source 
pub trait NumericReduction:
    Send
    + Sync
    + 'static {
    type Dtype: PolarsNumericType;

    // Required methods
    fn init() -> <Self::Dtype as PolarsNumericType>::Native;
    fn combine(
        a: <Self::Dtype as PolarsNumericType>::Native,
        b: <Self::Dtype as PolarsNumericType>::Native,
    ) -> <Self::Dtype as PolarsNumericType>::Native;
    fn reduce_ca(
        ca: &ChunkedArray<Self::Dtype>,
    ) -> Option<<Self::Dtype as PolarsNumericType>::Native>;
}

Required Associated Types§

Source

type Dtype: PolarsNumericType

Required Methods§

Source

fn init() -> <Self::Dtype as PolarsNumericType>::Native

Source

fn combine( a: <Self::Dtype as PolarsNumericType>::Native, b: <Self::Dtype as PolarsNumericType>::Native, ) -> <Self::Dtype as PolarsNumericType>::Native

Source

fn reduce_ca( ca: &ChunkedArray<Self::Dtype>, ) -> Option<<Self::Dtype as PolarsNumericType>::Native>

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§