Class Collection<K, V>

支持Map与Array功能的集合对象

Type Parameters

  • K

  • V

Hierarchy

  • Map<K, V>
    • Collection

Constructors

constructor

Properties

[toStringTag] _array size [species]

Accessors

array

Methods

[iterator] clear delete entries forEach get has keys set values

Constructors

constructor

  • Type Parameters

    • K

    • V

    Parameters

    • Optional entries: null | readonly (readonly [K, V])[]

    Returns Collection<K, V>

  • Type Parameters

    • K

    • V

    Parameters

    • Optional iterable: null | Iterable<readonly [K, V]>

    Returns Collection<K, V>

Properties

Readonly [toStringTag]

[toStringTag]: string

Private _array

_array: V[] = []

Readonly size

size: number

Returns

the number of elements in the Map.

Static Readonly [species]

[species]: MapConstructor

Accessors

array

  • get array(): V[]

  • 获取数组对象

    Returns V[]

Methods

[iterator]

  • [iterator](): IterableIterator<[K, V]>

  • Returns an iterable of entries in the map.

    Returns IterableIterator<[K, V]>

clear

  • Returns void

delete

  • 删除值

    Parameters

    • key: K

      关键字

    Returns boolean

entries

  • Returns an iterable of key, value pairs for every entry in the map.

    Returns IterableIterator<[K, V]>

forEach

  • Executes a provided function once per each key/value pair in the Map, in insertion order.

    Parameters

    • callbackfn: ((value: V, key: K, map: Map<K, V>) => void)
        • (value: V, key: K, map: Map<K, V>): void

        • Parameters

          • value: V
          • key: K
          • map: Map<K, V>

          Returns void

    • Optional thisArg: any

    Returns void

get

  • Returns a specified element from the Map object. If the value that is associated to the provided key is an object, then you will get a reference to that object and any change made to that object will effectively modify it inside the Map.

    Returns

    Returns the element associated with the specified key. If no element is associated with the specified key, undefined is returned.

    Parameters

    • key: K

    Returns undefined | V

has

  • Returns

    boolean indicating whether an element with the specified key exists or not.

    Parameters

    • key: K

    Returns boolean

keys

  • Returns an iterable of keys in the map

    Returns IterableIterator<K>

set

  • 设置值

    Parameters

    • key: K

      关键字

    • value: V

      数据值

    Returns Collection<K, V>

values

  • Returns an iterable of values in the map

    Returns IterableIterator<V>

Settings

Member Visibility

Theme

Generated using TypeDoc