Struct DefaultKeyBuilder 

pub struct DefaultKeyBuilder<K> { /* private fields */ }

DefaultKeyBuilder is a built-in KeyBuilder for the Cache.

If the key implements TransparentKey trait, use TransparentKeyBuilder. u8, u16, u32, u64, i8, i16, i32, i64, bool implement TransparentKey by default.

See KeyBuilder if you want to write a customized KeyBuilder.

Trait Implementations

impl<K> Debug for DefaultKeyBuilder<K>

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

Formats the value using the given formatter.

impl<K> Default for DefaultKeyBuilder<K>

fn default() -> Self

Returns the “default value” for a type.

impl<K: Hash + Eq> KeyBuilder for DefaultKeyBuilder<K>

type Key = K

Key

fn hash_index<Q>(&self, key: &Q) -> u64

where Self::Key: Borrow<Q>, Q: Hash + Eq + ?Sized,

hash_index is used to hash the key to u64

fn hash_conflict<Q>(&self, key: &Q) -> u64

where Self::Key: Borrow<Q>, Q: Hash + Eq + ?Sized,

if you want a 128bit hashes, you should implement this method, or leave this method return 0

fn build_key<Q>(&self, k: &Q) -> (u64, u64)

where Self::Key: Borrow<Q>, Q: Hash + Eq + ?Sized,

build the key to 128bit hashes.