Struct PlanCacheKey 

pub struct PlanCacheKey {
    pub op_kind: &'static str,
    pub dtype: DtypeTag,
    pub signature: u64,
}

Plan-cache key: op-kind + dtype + signature digest. Compact (24 bytes) so the LRU lookup is cheap.

Fields

op_kind: &'static str

dtype: DtypeTag

signature: u64

Trait Implementations

impl Clone for PlanCacheKey

fn clone(&self) -> PlanCacheKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PlanCacheKey

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

Formats the value using the given formatter.

impl Hash for PlanCacheKey

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 PlanCacheKey

fn eq(&self, other: &PlanCacheKey) -> 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.

impl Copy for PlanCacheKey

impl Eq for PlanCacheKey

impl StructuralPartialEq for PlanCacheKey