Enum mz_persist_types::stats::StatsFn

pub enum StatsFn {
    Default,
    Custom(fn(_: &DynColumnRef, _: ValidityRef) -> Result<ColumnarStats, String>),
}

The logic to use when computing stats for a column of T: Data.

If Custom is used, the DynStats returned must be a<T as Data>::Stats.

Variants

Default

Custom(fn(_: &DynColumnRef, _: ValidityRef) -> Result<ColumnarStats, String>)

Trait Implementations

impl Debug for StatsFn

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

Formats the value using the given formatter.

impl PartialEq for StatsFn

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.