Enum Direction 

pub enum Direction {
    AtMost,
    AtLeast,
    Within,
}

Which side of a value a certificate bounds.

A certificate that does not say the direction is a certificate a consumer cannot use, because the whole point of the class is picking the end of the range whose failure you can afford, per spec/stats/05-every-query.md section 5.1. Under-reserving memory spills and over-reserving starves, and they are not the same cost.

Variants

AtMost

The truth is no larger than the value. A frequency synopsis omitted_max is this.

AtLeast

The truth is no smaller than the value. A lower bound on a distinct count out of a sketch is this.

Within

The truth is within the bound on either side. A quantile boundary with an epsilon is this.

Implementations

impl Direction

pub const fn name(self) -> &'static str

The word EXPLAIN prints.

Trait Implementations

impl Clone for Direction

fn clone(&self) -> Direction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Direction

impl Debug for Direction

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

Formats the value using the given formatter.

impl Display for Direction

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

Formats the value using the given formatter.

impl Eq for Direction

impl Hash for Direction

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Direction

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Direction