LruCache<K, V>

Least recently used cache. Inspired by https://github.com/Yomguithereal/mnemonist/blob/master/lru-cache.js

Type parameters

Type parameter	Value
K	any
V	any

Constructors

new LruCache()

new LruCache<K, V>(capacity): LruCache<K, V>

Parameters

Parameter	Type	Default value
capacity	number	100

Returns

LruCache<K, V>

Source

src/utils.ts:495

Properties

Property	Modifier	Type
K	public	any[]
V	public	any[]
backward	private	Uint16Array
capacity	private	number
forward	private	Uint16Array
head	private	number
items	private	object
onItemEvicted	public	null | Function
size	private	number
tail	private	number

Methods

get()

get(key): undefined | V

Gets the value attached to the given key, and makes it the most recently used item.

Parameters

Parameter	Type	Description
key	any	Key.

Returns

undefined | V

Source

src/utils.ts:596

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getOrCreate()

getOrCreate(key, createFromKey): V

Returns the value with the specified key, if it already exists in the cache, or creates a new one by calling the provided function.

Parameters

Parameter	Type	Description
key	K	Key.
createFromKey	(key) => V	Function to create a new item.

Returns

V

Source

src/utils.ts:616

---

has()

has(key): boolean

Checks whether the key exists in the cache.

Parameters

Parameter	Type	Description
key	any	Key.

Returns

boolean

Source

src/utils.ts:541

---

set()

set(key, value): void

Sets the value for the given key in the cache.

Parameters

Parameter	Type	Description
key	any	Key.
value	any	Value.

Returns

void

Source

src/utils.ts:551

---

splayOnTop()

splayOnTop(pointer): LruCache<K, V>

Splays a value on top.

Parameters

Parameter	Type	Description
pointer	number	Pointer of the value to splay on top.

Returns

LruCache<K, V>

Source

src/utils.ts:513