Enum Hint 

pub enum Hint {
    Normal,
    Low,
}

Hint for the cache eviction algorithm to decide the priority of the specific entry if needed.

The meaning of the hint differs in each cache eviction algorithm, and some of them can be ignore by specific algorithm.

If the given cache hint does not suitable for the cache eviction algorithm that is active, the algorithm may modify it to a proper one.

For more details, please refer to the document of each enum options.

Variants

Normal

The default hint shared by all cache eviction algorithms.

Low

Suggest the priority of the entry is low.

Used by LRU.

Trait Implementations

impl Clone for Hint

fn clone(&self) -> Hint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Hint

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

Formats the value using the given formatter.

impl Default for Hint

fn default() -> Hint

Returns the “default value” for a type.

impl PartialEq for Hint

fn eq(&self, other: &Hint) -> 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 Hint

impl Eq for Hint

impl StructuralPartialEq for Hint