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Class: LRUCache<K, V> ​

lib/lru-cache.LRUCache

A LRU cache intended for caching pure functions.

Type parameters ​

Name
K
V

Constructors ​

constructor ​

• new LRUCache<K, V>(maxSize)

Type parameters ​

Name
K
V

Parameters ​

NameTypeDescription
maxSizenumberThe maximum size for this cache. We recommend setting this to be one less than a power of 2, as most hashtables - including V8's Object hashtable (https://crsrc.org/c/v8/src/objects/ordered-hash-table.cc) - uses powers of two for hashtable sizes. It can't exactly be a power of two, as a .set() call could temporarily set the size of the map to be maxSize + 1.

Defined in ​

profectus/src/lib/lru-cache.ts:23

Properties ​

first ​

• Private first: undefined | ListNode<K, V> = undefined

Defined in ​

profectus/src/lib/lru-cache.ts:11

last ​

• Private last: undefined | ListNode<K, V> = undefined

Defined in ​

profectus/src/lib/lru-cache.ts:12

map ​

• Private map: Map<K, ListNode<K, V>>

Defined in ​

profectus/src/lib/lru-cache.ts:5

maxSize ​

• maxSize: number

Defined in ​

profectus/src/lib/lru-cache.ts:13

Accessors ​

size ​

• get size(): number

Returns ​

number

Defined in ​

profectus/src/lib/lru-cache.ts:27

Methods ​

get ​

▸ get(key): undefined | V

Gets the specified key from the cache, or undefined if it is not in the cache.

Parameters ​

NameTypeDescription
keyKThe key to get.

Returns ​

undefined | V

The cached value, or undefined if key is not in the cache.

Defined in ​

profectus/src/lib/lru-cache.ts:37

set ​

▸ set(key, value): void

Sets an entry in the cache.

Throws

Error, if the map already contains the key.

Parameters ​

NameTypeDescription
keyKThe key of the entry.
valueVThe value of the entry.

Returns ​

void

Defined in ​

profectus/src/lib/lru-cache.ts:88

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