Struct minorhacks_chess::CacheTable [−][src]
pub struct CacheTable<T: Copy + Clone + PartialEq + PartialOrd> { /* fields omitted */ }
Store a cache of entries, each with an associated hash.
Implementations
impl<T: Copy + Clone + PartialEq + PartialOrd> CacheTable<T>
[src]
impl<T: Copy + Clone + PartialEq + PartialOrd> CacheTable<T>
[src]pub fn new(size: usize, default: T) -> CacheTable<T>
[src]
pub fn new(size: usize, default: T) -> CacheTable<T>
[src]Create a new CacheTable
with each associated entry initialized with a hash of ‘0’
Note: You must pass in a size where only 1 bit is set. (AKA: 2, 4, 8, 16, 1024, 65536,
etc.)
Panics when size is invalid.
pub fn replace_if<F: Fn(T) -> bool>(&mut self, hash: u64, entry: T, replace: F)
[src]
pub fn replace_if<F: Fn(T) -> bool>(&mut self, hash: u64, entry: T, replace: F)
[src]Replace an entry in the hash table with a user-specified replacement policy specified by
replace
. The replace
closure is called with the previous entry occupying the hash table
slot, and returns true or false to specify whether the entry should be replaced. Note that
the previous entry may not have the same hash, but merely be the default initialization or
a hash collision with hash
.
use minorhacks_chess::CacheTable; let mut table: CacheTable<char> = CacheTable::new(256, 'a'); assert_eq!(table.get(5), None); // Note that 'a' is the default initialization value. table.replace_if(5, 'b', |old_entry| old_entry != 'a'); assert_eq!(table.get(5), None); table.replace_if(5, 'c', |old_entry| old_entry == 'a'); assert_eq!(table.get(5), Some('c')); table.replace_if(5, 'd', |old_entry| old_entry == 'c'); assert_eq!(table.get(5), Some('d'));
Auto Trait Implementations
impl<T> RefUnwindSafe for CacheTable<T> where
T: RefUnwindSafe,
T: RefUnwindSafe,
impl<T> Send for CacheTable<T> where
T: Send,
T: Send,
impl<T> Sync for CacheTable<T> where
T: Sync,
T: Sync,
impl<T> Unpin for CacheTable<T>
impl<T> UnwindSafe for CacheTable<T> where
T: UnwindSafe,
T: UnwindSafe,